Answer:
FOIL Method! (EXPLAINED BELOW)
Step-by-step explanation:
FOIL MEANS First Out In Last.
For example:
Binomial: (a+b) (a+b)
STEP 1: Multiply the first term of each bracket.
(a+b) (a+b)
So, a * a = [tex]a^{2}[/tex]
The number would be positive since both terms are positive.
STEP 2: Multiply the outer terms.
(a+b) (a+b)
So, a * b = ab
The number would be positive since both terms are positive.
STEP 3: Multiply the inner terms.
(a+b) (a+b)
So, a * b = ab
The number would be positive since both terms are positive.
STEP 4: Multiply the last terms.
(a+b) (a+b)
So, b * b = [tex]b^{2}[/tex]
The number would be positive since both terms are positive.
STEP 5: Put them together with the appropriate signs.
[tex]a^{2} + 2ab + b^{2}[/tex]find the area and perimeter
Area: (4 * 2) + (4 *2) = 16cm^2
Perimeter: (4 + 2 )+ 6 + (2 + 2 + 4) = 20
6.Which of the quadratic functions has the narrowest graph?O y = -2x2O y = -3x2°yapx?00H
To understand the question, let us draw the graphs of each one
The red graph represents A
The blue graph represents B
The green graph represents C
The purple graph represents D
Let us find the narrowest
The blue graph is the narrowest because it is closed to the y-axis more than the other graphs
The correct answer is B
Decimals into frictions -13.25=
Answer:-53/4
Step-by-step explanation:
Answer: -53/4
Step-by-step explanation:
[tex]\displaystyle\\-13.25=\\\\-13\frac{25}{100}=\\\\-13\frac{25(1)}{25(4)}=\\\\-13\frac{1}{4} =\\\\-\frac{13(4)+1}{4} =\\\\-\frac{52+1}{4}=\\\\-\frac{53}{4}[/tex]
PLS SOMEONE HELP FIND THE ANSWERS
Answer:
6. 24
Step-by-step explanation:
A) Use pythogaras theoram
8x8 - 5x5 = axa - bxb = c
64-25= 39
39 square root =6.24
What i the equation of a line that pae through the point (4,−17) and i perpendicular to y=x/7−3? Enter your anwer in the box
The equation of the line that is passing through the point (4,−17) and is perpendicular to y=x/7−3 is 7x -y = -30.
The line is passing through the point (4,-17) and is perpendicular to the line y = x/7-3
Now, the slope of the given line y = x/7-3 is,
M = 1/7
If the other line is perpendicular to it and has slope m, then the, we can write,
Mm = -1
So, putting values,
(1/7)m = -1
m = -7
Now, we have the slope m = -7 of the line and the point (4,-17) of the line,
So, the equation of the line will be,
m = [y-(-17)]/[x-4]
-7 = y+17/x-4
7x+47 = y+17
7x -y = -30
So, the equation of line is 7x -y = -30.
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Z.5 Graph solutions to one-step inequalities TMX DIN 4) Solve the inequality and graph the solution. ≥ 2 Language arts 0 Submit To draw a ray, plot an endpoint and select an arrow. Select an endpoint to change it from closed to open. Select the middle of the ray to delete it. 1 2 3 Science 4 5 7 8 Recommendations 9 10
The solution of the inequality is d≥ 4. The graph is attached with the answer below.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
The solution to inequality is,
d/2 ≥ 2
d ≥ 2 x 2
d ≥ 4
The graph states that all the values of "d" are greater than or equal to 4.
Therefore, the solution to the inequality is d≥ 4. The graph is attached with the answer below.
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What does n stand for in the expression?If there are 60 sides, what is the difference between the perimeter and π?
a. The expression represents the perimeter of a polygon:
[tex]n\cdot\sin (\frac{360}{2n})[/tex]n represents the number of sides of the polygon.
b. If we have 60 sides, then n = 60.
We can calculate the approximation given by the expression as:
[tex]\begin{gathered} n\cdot\sin (\frac{360}{2n}) \\ 60\cdot\sin (\frac{360}{2\cdot60}) \\ 60\cdot\sin (\frac{360}{120}) \\ 60\cdot\sin (3) \\ 60\cdot0.0523 \\ 3.138 \end{gathered}[/tex]We can then calculate the difference with π using a calculator as:
[tex]|3.138-\pi|=0.0036[/tex]The difference is approximately 0.0036.
Suppose both factors are multiples of 10 . Explain why the number of zeros may be different in factor than product
By using the concept of factors and multiples, it can be inferred that
Product of a and b i.e. ab has atleast (m + n) trailing zeroes which is greater than both m and n
What are factors and multiples?
Suppose the number is k. Factors of k are those numbers that divide k.
For example: Factors of 6 are 1, 2, 3 and 6
Multiples of k are those numbers which are divided by k.
For example Multiples of 6 are 6, 12, 18, ....
Since the factors are of multiple of 10, then the factors will have atleast one trailing zero. Let the factors be a and b
Suppose a has m trailing zeroes and b has n trailing zeroes.
Product of a and b i.e. ab has (m + n) atleast trailing zeroes which is greater than both m and n
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When we apply the concept of factors and multiples, we concluded that the product of a and b i.e. ab has at least (m + n) trailing zeroes that are greater than both m and n.
What are factors and multiples?
A multiple is a number that, up to a given number of times, can be divided by another number without leaving a leftover.
A factor is a pair of integers or more that divide a given number by itself without leaving a residue.
Here,
the factors are of multiple of 10, then the factors will have at least one trailing zero.
We let the factors be a and b
Suppose a has m trailing zeroes and b has n trailing zeroes then, the Product of a and b i.e. ab has (m + n) at least trailing zeroes which are greater than both m and n.
Hence, we concluded that the product of a and b i.e. ab has at least (m + n) trailing zeroes that are greater than both m and n.
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whats b squared + c squared
Answer:
x+1/x-1 + 1-x/x+1 + 4x/1+x^2
Solve the compound inequality, graph the solution set, and write in interval notation. SHOW ALL STEPS! 6x - 3x + 12 or 5x – 6 > 3x + 2
Answer
- The solution of this compound inequality is x < 3 OR x ≥ 4
- The graph of this solution is attached below
- The interval notation is (-∞, 3) OR [4, ∞)
Explanation
The compound inequality to be solved is
6x - 3 < x + 12 OR 5x - 6 ≥ 3x + 2
To solve this, we solve each of the pair one at a time for the two-part solution
6x - 3 < x + 12
6x - x < 12 + 3
5x < 15
Divide both sides by 5
(5x/5) < (15/5)
x < 3
OR
5x - 6 ≥ 3x + 2
5x - 3x ≥ 6 + 2
2x ≥ 8
Divide both sides by 2
(2x/2) ≥ (8/2)
x ≥ 4
So, the solution is
x < 3 OR x ≥ 4
So, this solution says that x is less than 3, but greater than or equal to 4.
For the graph, Note that
In graphing inequality equations, the first thing to note is that whenever the equation to be graphed has (< or >), the circle at the beginning of the arrow is usually unshaded.
But whenever the inequality has either (≤ or ≥), the circle at the beginning of the arrow will be shaded.
This solution tells us that the wanted parts are numbers less than 3 and numbers greater than 4.
Also, in writing inequalities as interval, the signs (< or >) indicate an open interval and is written with the bracket () while the signs [≤ or ≥] denote a closed interval which is denoted by the brackets [].
x < 3, that is, x ranges from negative infinity to just before 3.
x < 3 is (-∞, 3)
x ≥ 4, that is, x ranges from 4 to infinity
x ≥ 4 is [4, ∞)
Hope this Helps!!!
What is the sum of these numbers?
+7+(-4)=
Answer:
3
Step-by-step explanation:
Since + × - = -
The - sign will change
+7 - 4 = 3
A dance studio charges an application fee and a monthly rate for dance classes. This is represented by the equation, C=50x+75. In this function, x represents the
Responses
number of dance classes taken each month
cost per dance class
application fee
total cost of dance classes each month
In linear equation, 50x is the total cost of dance classes each month.
What is a linear equation example?
Ax+By=C is the typical form for linear equations involving two variables. A linear equation in standard form is, for instance, 2x+3y=5.Finding both intercepts of an equation in this format is rather simple (x and y).C = 50x + 75, where 75 is the application fee. When they take out the application fee, it will become:
C = 50x +75 (-75)
C = 50x
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help meeeeeeeeee pleasee
Answer: 9.7 seconds
Step-by-step explanation:
[tex]16t^2=1503\\\\t^2 =\frac{1503}{16}\\\\t=\sqrt{1503/16} \text{ } (t > 0)\\\\t \approx 9.7[/tex]
Solve for x: 2x²-2x-1=0
We can use the quadratic formula to solve this question. The quadratic formula is given below.
[tex]\begin{gathered} ax^2+bx+c=0 \\ \Rightarrow x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \end{gathered}[/tex]In our case,
[tex]\begin{gathered} a=2,b=-2,c=-1 \\ \Rightarrow x=\frac{-(-2)\pm\sqrt[]{(-2)^2-4\cdot2\cdot-1}}{2\cdot2}=\frac{2\pm\sqrt[]{4+8}}{4}=\frac{2\pm\sqrt[]{12}}{4}=\frac{2\pm2\sqrt[]{3}}{4} \\ \Rightarrow x=\frac{1}{2}\pm\frac{\sqrt[]{3}}{2} \end{gathered}[/tex]Then, the solutions are
[tex]x_1=\frac{1}{2}+\frac{\sqrt[]{3}}{2},x_2=\frac{1}{2}-\frac{\sqrt[]{3}}{2}[/tex]The solutions are 1/2+sqrt(3)/2 and 1/2-sqrt(3)/2
I've always wondered why we put the dollar sign ($) before a number, when, when we say an amount of money we say the number first then dollars; like $12, but I think it really should be 12$, cause we don't go and say "dollar twelve", we say "twelve dollars". I don't know if this makes sense, but this always confused me; please share your thoughts.
Answer: I believe it's just custom. Some nations follow the quantity with a currency symbol, such as the dollar sign.
According to one hypothesis I've heard, the currency symbol was added before the quantity to stop individuals from modifying handwritten amounts, like changing 25.00 into 125.00, for example. It might be accurate, however I believe that the amount is always spelled out in words in the majority of situations when such fraud would be conceivable, such as on checks.
Step-by-step explanation:
How are the least common multiple and the least common denominator related?
Least common denominator is the lowest number to which all the fractions can be expanded, so it is the Least common multiple of all denominators.
Given that,
We have to find the difference of LCD and LCM.
What is LCM?The least common multiple, or LCM, is the smallest common multiple of any two or more numbers. What does "common" mean? In this context, the word "common" refers to something that is shared by two or more people.
What is LCD?The LCD, or least common denominator, is the least common multiple of two or more denominators. In this instance, the denominator, or bottom number, of a fraction contains the common multiple. When arithmetically adding or subtracting fractions, the LCD must be computed. When dividing or multiplying fractions, the LCD is not required.
For example,
Let's check the following fractions:
(1/2,2/3,5/6)
To find the Least common denominator of the fractions we have to find the Least common multiple of the fractions' denominators:
lcd(1/2,2/3,5/6)=lcm(2,3,6)
To calculate the Least common multiple we have to find the lowest number which can be obtained by multiplying those numbers.
This number is 6 because we can multiply 2×3 and 3×2 to get 6.
Therefore, Least common denominator is the lowest number to which all the fractions can be expanded, so it is the Least common multiple of all denominators.
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A coordinate plane with a graphed system of inequalities. The x- and y-axes both scale by one. There is a dashed line representing an inequality that goes through the plotted points (0,5) and (3,1). The shaded region for the inequality is below the line. Find the inequality represented by the graph.
The linear inequality that represented by the graph is given as follows:
y < -4x/3 + 5.
How to obtain the inequality?The inequality is represented by a line, which has the following format:
y = mx + b.
In which the coefficients of the equation of the line are listed as follows:
m is the slope, representing the rate of change, that is, by how much y changes when x increases by one.b is the y-intercept, representing the value of y when x = 0.The two points of the line are given as follows:
(0,5) and (3,1).
Hence the intercept is:
b = 5.
The slope is given by the change in y divided by the change in x, hence it is of:
m = (1 - 5)/(3 - 0) = -4/3.
Hence the line is:
y = -4x/3 + 5.
The inequality is below the shaded line, hence it is:
y < -4x/3 + 5.
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Answer:
y < -4/3x + 5.
Step-by-step explanation:
13) Solve the following quadratic equations by completing the square: X^2 + 16x + 5 = 0
We want to solve the following equation
x² + 16x + 5 = 0
↓
x² + 16x = 5
We want to rewrite the equation so its left side is
(x + a)²
We know that
(x + a)² = x² + 2ax + a²
where a is a number, then, we want that the left side look something like
x² + 2ax + a²
Then we first want to find which must be the number a in this case.
Finding aSince 2 · 8 = 16, then the left side is
x² + 16x = x² + 2 · 8x
then, in this case a would be 8
a = 8
Completing the square with a²We want that the left side of our equation looks like:
x² + 2ax + a²
Since it has the first two terms
x² + 16x = 5
we have to add a² = 8² = 64
We add it both sides of the equation:
x² + 16x + 8² = 5 + 64
x² + 2 · 8x + 8² = 69
Now, we can write it as (x + a)²
x² + 2 · 8x + 8² = 69
↓ since (x + a)² = x² + 2ax + a²
(x + 8)² = 69
Solving the equationIn order to solve the equation, we want to "leave x alone" on the left side:
(x + 8)² = 69
↓ squaring root both sides
(x + 8) = ±√69
x + 8 = ±√69
↓ taking 8 to the right side
x = - 8 ±√69
SolutionsWe have two solutions:
x₁ = - 8 -√69
x₂ = - 8 + √69
Since
Consider the line 8x-2y=-5.
Find the equation of the line that is parallel to this line and passes through the point (-4, 3).
Find the equation of the line that is perpendicular to this line and passes through the point (-4, 3).
Answer:
4x - y = - 19 and x + 4y = 8
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
given
8x - 2y = - 5 ( subtract 8 from both sides )
- 2y = - 8x - 5 ( divide through by - 2 )
y = 4x + [tex]\frac{5}{2}[/tex] ← in slope- intercept form
with slope m = 4
• Parallel lines have equal slopes , then
y = 4x + c ← is the partial equation
to find c substitute (- 4, 3 ) into the partial equation
3 = - 16 + c ⇒ c = 3 + 16 = 19
y = 4x + 19 ← equation of parallel line in slope- intercept form
subtract y from both sides
0 = 4x - y + 19 ( subtract 19 from both sides )
- 19 = 4x - y , that is
4x - y = - 19 ← equation in standard form
----------------------------------------------------------------------
given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{4}[/tex] , then
y = - [tex]\frac{1}{4}[/tex] x + c ← is the partial equation
to find c substitute (- 4, 3 ) into the partial equation
3 = 1 + c ⇒ c = 3 - 1 = 2
y = - [tex]\frac{1}{4}[/tex] x + 2 ← equation of perpendicular line in slope- intercept form
multiply through by 4 to clear the fraction
4y = - x + 8 ( add x to both sides )
x + 4y = 8 ← equation in standard form
-12 + 8x less than or greater than -44
Could be the two
For example for less than we will obtain -12+8x<-44
For the greater than -12+8x>-44
Examine the table, which represents a linear function. Input (C) output (y) 8 -40 -49 -58 What is the rate of change of the function? Enter your answer as a number, like this: 42(from MATH workbook 8A)
Answer:
-3
Explanation:
To calculate the rate of change of the function, we pick two pairs of points.
(8, -40) and (17,-67)
We use the formula below:
[tex]\begin{gathered} \text{Rate of change}=\frac{Change\text{ in y-axis}}{Change\text{ in x-axis}} \\ =\frac{-67-(-40)}{17-8} \\ =\frac{-67+40}{17-8} \\ =\frac{-27}{9} \\ =-3 \end{gathered}[/tex]The rate of change of the function is -3.
Can anyone do this equation of a straight line problem?
The required equation for line M will be 4x+72=y as in the form of y=ax+b because line L is perpendicular to line M.
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two expressions 3x + 5 and 14, which are separated by the 'equal' sign. a formula that expresses the connection between two expressions on either side of a sign. Typically, it has a single variable and an equal sign. A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are present. The variables in the above equation are y and x, and it is occasionally referred to as a "linear equation of two variables."
Here,
If x-intercept=B and y-intercept=E
Point B=(16,0)
Point E=(0,4)
point A=(-16,4+4)
=(-16,8)
line M is perpendicular to line L,
slope of L=-4/16
=-1/4
slope of M=-1/-1/4=4
The equation of line M will be,
point=(-16,8)
slope=4
y-8=4(x+16)
y-8=4x+64
4x-y+72=0
Line L is perpendicular to line M, so the required equation for line M will be 4x+72=y in the form of y=ax+b.
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Corie buys dog food in a 34-pound bag. Her dog eats about 1 pound a day. Corie buys cat
food in a 16-pound bag. Her cat eats about 1/4 pound a day. Assume she buys new bags of pet
food on the same day. On which day will the two bags have the same weight? Show how you
figured it out.
The day the two bags will have the same weight is the 24th day.
On which day will the two bags have the same weight?The linear equation that can be used to determine the pound of dog food left is:
Amount of dog food left = capacity of the bag - (number of days x amount the dog eats per day)
Amount of dog food left = 34 - (1 x p)
Amount of dog food left = 34 - 1p
The linear equation that can be used to determine the pound of cat food left is:
Amount of cat food left = capacity of the bag - (number of days x amount the cat eats per day)
Amount of cat food left = 16 - (1/4 x p)
Amount of cat food left = 16 - 1/4p
On the day the two bags will have the same weight, the two above equations would be equal:
16 - 1/4p = 34 - 1p
p - 1/4p = 34 - 16
3/4p = 18
p = (18 x 4) / 3
p = 24 days
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help meeeeeeeeeeeeeee pleaseeeeeee
Answer: 19.6 feet
Step-by-step explanation:
Using the Pythagorean theorem,
[tex]x^2 +(x+6)^2 =48^2\\\\x^2 +x^2 +12x+36=2304\\\\2x^2 +12x-2268=0\\\\x^2 +6x-1134=0\\\\x=\frac{-6 \pm \sqrt{6^2 -4(1)(-1134)}}{2(1)}\\\\x \approx 30.8 \text{ } (x > 0)\\\\\implies x+(x+6) \approx 67.6\\\\\therefore (x+(x+6))-48 \approx 19.6[/tex]
How do you find the distance between the points shown
Answer:
A. Subtract the distance between each point and the x-axis.
Step-by-step explanation:
The points shown are horizontally distanced. Because of this, you need to subtract their x values. In coordinate planes, the variable "x" represents how far a point is or is not from the origin. Given this information, you need to subtract the x values to get the distance they are apart. Note: Distance on a number line or graph is always given in absolute value. Absolute value is the term for when a number is converted to its positive form. For instance, |-1| has these brackets around it representing absolute value. Whenever a number in absolute value is a negative number or is greater than 0, it will become its positive form. |-1| = 1
Hope this helps!
Option A is correct, By subtracting the distance between each point and the x axis we find the distance between the points shown
What is Distance?The length along a line or line segment between two points on the line or line segment.
Distance=√(x₂-x₁)²+(y₂-y₁)²
The given two points in the given graph are A(-8, -4) and B(2,-4)
Now let us plug in these points in the formula.
x₂= 2, x₁ = -8, y₂=-4, y₁=-4
Distance=√(x₂-x₁)²+(y₂-y₁)²
=√(2+8)²+(-4+4)²
=√(10)²
=10 units.
By subtracting the distance between each point and the x axis we can find the distance.
Hence, Option A is correct, By subtracting the distance between each point and the x axis we find the distance between the points shown
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Find the value of x in the triangle show below
Answer:
A
Step-by-step explanation:
a^2 + b^2 = c^2
2^2 + x^2 = 4^2
4 + x^2 = 16
x^2 = 12
x = √12
Factor the expression using the GCF.
18−12
Answer:
you mean greatest common factor?
Label the missing side length of the figure below. Click each dot on the image to select an answer. A sculpture made up of 2 rectangular prisms. Color is used to show the rectangular prisms that make up the figure. The first rectangular prism is green and has dimensions of an unknown length of 2 meters width by 3 meters height. The second rectangular prism is purple and has dimensions of 10 meters in length by 4 meters in width by 7 meters in height. Find the volume of the entire figure by adding the importance of the separate figures. \text{Volume}=Volume=start text, V, o, l, u, m, e, end text, equals {}+ \purpleD{280}=+280=plus, start color #7854ab, 280, end color #7854ab, equals \text{ cubic meters} cubic meters create text, space, c, u, b, i, c, space, m, e, t, e, r, s, end text
Answer:
Your answer is A now.
Step-by-step explanation:
Ginny has a catering buisness. There is a proportional relationship between the number of people and the amount of meat she uses for an event. For 10 people she uses 4 pounds of meat. Find the amount of meat needed for 20, 30, 40, 50, and 75 people.
Explanation:
Let x be the number of people and y be the amount of meat.
They have a proportional relationship:
[tex]y=kx[/tex]To find the constant of proportionality k we use the initial information that for 10 people she uses 4 pounds of meat.
x=10 and y=4:
[tex]\begin{gathered} 4=k\times10 \\ k=\frac{4}{10}=\frac{2}{5} \end{gathered}[/tex]The relationship is:
[tex]y=\frac{2}{5}x[/tex]Now we just have to replace x by 20, 30, 40, 50 and 75 in this relationship and find y
Answer:
Number of people Amount of meat
20 8
30 12
40 16
50 20
75 30
I need the answer ASAP!!
The centrifugal force of an object moving in a circle varies jointly with the radius of the circular path and the mass of the object and inversely as the square of the time, it takes to move about one full circle. A 6-gram object moving in a circle with a radius of 75 centimeters at a rate of 1 revolution every 3 seconds has a centrifugal force of 5000 dynes. Find the centrifugal force of a 20-gram object moving in a circle with radius of 155 centimeters at a rate of 1 revolution every 5 seconds.
Write down the equation.
Answer: 12,500
Formula for centrifugal force = [tex]\frac{k r m}{t^{2} }[/tex]
In the first case,
The mass of an object moving in a circle as 'm1' and radius as 'r1', 'k' as constant, and time as 't1'. 'f1' is centrifugal force.
centrifugal force is f1 = [tex]\frac{kr1m1}{t1^{2} }[/tex]
In the second case,
The mass of an object moving in a circle as 'm2' and radius as 'r2', 'k' as constant, and time as 't2'. 'f2' is centrifugal force.
m1 = 6 gram , r1 = 75 cm , t1 = 3 sec, f1 = 5000 dynes
as per equation, 5000 = [tex]\frac{ k * 75 * 6}{3^{2} }[/tex] , after calculation the value of k = 100
in the second case use the same equation and find centrifugal force (f2)
f2 = [tex]\frac{k * r2 * m2}{t2^{2} }[/tex] ,m2 = 20 gram , r1 = 155cm , t1 = 5 sec, k= 100
f2 = [tex]\frac{100 * 155 * 20}{5^{2} }[/tex] after calculation f2 = 12,400.
so, the final centrifugal force is 12,400 dynes.
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