Find the scale factor for 8 in : 2 ft
Explanation
to solve this we need to get the ratio, to do this get the same unit measure in both sides of the quotient
so
[tex]8\text{ in : 2 ft}[/tex]since
[tex]1\text{ ft=12 in}[/tex]replace,
[tex]\begin{gathered} 8\text{ in : 2 ft} \\ 8\text{ in : 2}(12\text{ in)} \\ 8\text{ in: 24 in} \\ \text{divide both sides by 8} \\ \frac{8\text{ in}}{8}=\frac{24\text{ in}}{8} \\ 1\text{ in:3 in} \end{gathered}[/tex]it means the scales factor is
[tex]1\colon3[/tex]SORRY IF ITS IN THE WRONG SECTION I NEED THE ANSWER. NO LINKS OR REPORT. What makes a source effective? Select the two correct answers (1 point) A. it leads you to another source B. it adds to your understanding of a topic C. it is interesting to you D. it is presented in a written format E. it is accurate
Answer:
B and E
Step-by-step explanation:
Hope this helps!
What volume in cubic centimeters of the box below ? Do not include units in your answer.5cm4cm3cm
Given,
The length of the box is 4 cm.
The breadth of the box is 3 cm.
The height of the box is 5 cm.
Required
The volume of the box.
The volume of the cube is calculated as,
[tex]Volume=length\times breadth\times height[/tex]Substituting the values then,
[tex]\begin{gathered} Volume=5\times4\times3 \\ =20\times3 \\ =60\text{ cm}^3 \end{gathered}[/tex]Hence, the volume of the cube is 60 cm^3.
Plane a flies 4375 miles in the same amount of time
Given the following:
plane A flies 4375 miles
plane B flies 4550 miles
plane B is flying 35 mph more than plan A.
We are should find the amount of time it takes each plane to atravel their respective distances.
The time equation is:
4375 = 4550
x x + 35
Lets cross multipy
4375(x + 35) = x(4550)
4375x + 153125 = 4550x
153125 = 4550x - 4375x
153125 = 175x
175x = 153125
x = 153125/175
x = 875
x is the speed of plane A
Speed of plane B = 875 + 35 = 910
The amount of time plane A will use is = 4375/875 = 5
The amount of time plane B will use is = 4550/910 = 5
choose the correct value on each side of the equation.
Answer:
442.12
Expalanation:
Given the expression
458.13 + y = 900.25
We are to look for the value of y
Subtract 458.13 from bith sides of the equation:
458.13 + y - 458.13 = 900.25 - 458.13
y = 442.12
Hence the correct value is 442.12
.13 from bith sides of the equation:
458.13 + y - 458.13 = 900.25 - 458.13
A cylindrical can has a radius of 6 inches and a height of 15 inches. Find the volumeof the can.
let's remember the formula to find the volume of a cylinder
Let's apply the formula with the values that we have in the problem.
The volume of the cylindrical can is 540π inches^3 or 1696.46 inches^3.
1) What is the value of u? A) 32° B) 34 C) 36° D) 68°
Triangle XYZ is an isosceles triangle, then ∠Z and ∠X (also called u) measure the same.
The addition of the internal angles of a triangle is equal to 180°:
∠X + ∠Y + ∠Z = 180°
Replacing with ∠X = ∠Z = u, and ∠Y = 112°:
u + 112° + u = 180°
2u + 112° = 180°
2u = 180° - 112°
2u = 68°
u = 68°/2
u = 34°
A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing an ace or a spade?A. 4/13B. 16C. 1/4D. 17
The number of ace in a deck of 52 cards is =4
The number of spade in a deck of 52 cards is = 13.
The number of ace of spade in a deck of 52 cards is =1
The event is non-exclusive hence the probablity can be determined as,
[tex]\begin{gathered} P(A\cup S)=P(A)+P(S)-P(A\cap S) \\ =\frac{4}{52}+\frac{13}{52}-\frac{1}{52} \\ =\frac{16}{52} \\ =\frac{4}{13} \end{gathered}[/tex]Thus, option (A) is correct.
Find the area of the shape. 12 m 6 m 11 m 4 m 3. What is the perimeter of the above shape?
Area of the given shape is obtained as,
[tex]\begin{gathered} A=(12\times6)+(11-6)\times4 \\ A=72+(5\times4) \\ A=72+20 \\ A=92m^2 \end{gathered}[/tex]Perimeter of the shape is simply the addition of all the sides
i.e.
[tex]\begin{gathered} P=12+11+4+6 \\ P=23+10 \\ P=33m \end{gathered}[/tex]Which of the following is equal to 11.4 9? A. (11 x 9) + (0.4 9) B. (11 + 9) + (0.4 +9) C. (11 x 9) * (0.4 * 9) D. (11 + 9) * (0.4 +9)
Answer
Option A is correct.
(11.4 × 9) = (11 × 9) + (0.4 × 9) = 102.6
Step-by-step Explanation
The best way to explain this is to examine the options one at a time to examine the one that is the most correct.
We want to know which of the options is equal to (11.4 × 9).
11.4 × 9 = 102.6
The options are
A. (11 × 9) + (0.4 × 9)
11 × 9 = 99
0.4 × 9 = 3.6
(11 × 9) + (0.4 × 9) = 99 + 3.6 = 102.6
B. (11 + 9) + (0.4 + 9)
11 + 9 = 20
0.4 + 9 = 9.4
(11 + 9) + (0.4 + 9) = 20 + 9.4 = 29.4
C. (11 × 9) × (0.4 × 9)
11 × 9 = 99
0.4 × 9 = 3.6
(11 × 9) × (0.4 × 9) = 99 × 3.6 = 356.4
D. (11 + 9) × (0.4 + 9)
11 + 9 = 20
0.4 + 9 = 3.6
(11 + 9) × (0.4 + 9) = 20 × 3.6 = 72
Since only option A gives the same answer as the expression in the question, option A is the only correct option.
Hope this Helps!!!
Why do dividing functions have 4 end behaviors
Since the dividing function has discontinuity in x and y, we can see that it would have 4 end behaviours
which equation had a graph that is a parabola with vertex at (-1,-1)
After solving all the equations, we can conclude that equation (D) [y = (x + 1)² - 1] had a graph that is a parabola with vertex (-1, -1).
What are equations?A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions. A mathematical statement that has an "equal to" symbol between two expressions with equal values is called an equation. As in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others.The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.So, the form of the equation of the vertical parabola:
y = a(x - h)² + kWhere h and k are the vertexes.Now, calculate each equation as follows:
(A) y = (x - 1)² + 1
Vertex: (1, 1)Then, the wrong answer.(B) y = (x - 1)² - 1
Vertex: (1, -1)Then, the wrong answer.(C) y = (x + 1)² + 1
Vertex: (1, 1)Then, the wrong answer.(D) y = (x + 1)² - 1
Vertex: (-1, -1)Then, this is the correct option.Therefore, after solving all the equations, we can conclude that equation (D) [y = (x + 1)² - 1] had a graph that is a parabola with vertex (-1, -1).
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Complete question:
Which equation has a graph that is a parabola with a vertex at (–1, –1)?
A.y = (x – 1)2 + 1
B.y = (x – 1)2 – 1
C.y = (x + 1)2 + 1
D.y = (x + 1)2 – 1
One number is 22 more than another. Their product is – 121.Step 1 of 2: Set up an equation to solve the given word problem. Let x be the smaller number.Answer# KeypadKeyboard ShortcutsO x + x + 22 = - 121O x(22x) = - 121O x(x + 22)- 121O x(x – 22)- 121
Let it be:
• x: The smaller number.
,• x + 22: The larger number.
The product of both numbers is:
[tex]x(x+22)[/tex]Since the product of both numbers is -121, we can write:
[tex]x(x+22)=-121[/tex]The word 'is' is represented by the symbol =.
Therefore, the equation to solve the given word problem is:
[tex]x(x+22)=-121[/tex]Step 2To find the numbers, we solve the previous equation.
[tex]\begin{gathered} x(x+22)=-121 \\ \text{ Apply the distributive property on the left side} \\ x\cdot x+22\cdot x=-121 \\ x^2+22x=-121 \\ \text{ Add }121\text{ from both sides} \\ x^2+22x+121=-121+121 \\ x^2+22x+121=0 \end{gathered}[/tex]Now, we can factor the expression on the left side using the perfect square trinomial rule.
[tex]a^2+2ab+b^2=(a+b)^2[/tex]Then, we have:
[tex]\begin{gathered} x^2+22x+121=0 \\ x^2+2\cdot11\cdot x+11^2=0 \\ (x+11)^2=0 \\ \text{ Apply square root to both sides of the equation} \\ \sqrt[]{(x+11)^2}=\sqrt[]{0} \\ x+11=0 \\ \text{ Subtract 11 from both sides} \\ x+11-11=0-11 \\ x=-11 \end{gathered}[/tex]Finally, we find the another number.
[tex]\begin{gathered} x+22=-11+22 \\ x+22=11 \end{gathered}[/tex]Therefore, the numbers are -11 and 11.
Find the equation for the line with the given properties. Sketch the graph of the line. Passes through (2, -5) and (7,3)
We have to find the equation of the line that passes through points (2,-5) and (7,3).
We can start by calculating the slope m as:
[tex]m=\frac{y_2-y_1}{x_2-x_1}=\frac{3-(-5)}{7-2}=\frac{3+5}{5}=\frac{8}{5}[/tex]With one point and the slope, we can write the line equation in slope-point form and then rearrange it:
[tex]\begin{gathered} y-y_2=m(x-x_2) \\ y-3=\frac{8}{5}(x-7) \\ y-3=\frac{8}{5}x-\frac{56}{5} \\ y=\frac{8}{5}x-\frac{56}{5}+3\cdot\frac{5}{5} \\ y=\frac{8}{5}x-\frac{56}{5}+\frac{15}{5} \\ 5y=8x-56+15 \\ 5y=8x-41 \\ -8x+5y+41=0 \\ 8x-5y-41=0 \end{gathered}[/tex]The equation in general form is 8x-5y-41 = 0.
We can sketch it as:
A tub drains water at a rate of 3 gallons a minute. Which equation shows the relationship between g, the number of gallons of water drained from the tub and m, the number of minutes the tub has been draining water?
Okay, here we have this:
Considering the provided information, we are going to identify the requested equation, so we obtain the following:
Based on the information given, we obtain the following function:
Number of Gallons Drained=3*Minutes Elapsed
g=3m
Finally we get that the equation is: g=3m, where g represents the number of gallons drained, and m the number of minutes elapsed.
I need to show you a pic of the question
To answer this question, we need to identify two points on the graph. These points are:
(4, 7) and (0, -9). These points are easy to identify, and a line is defined by two points.
We are going to use the two-point equation of the line to finally find the slope-intercept form of the line.
The formula to find the line is:
[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]We have two points, and we need to label them as follows:
(4, 7) ---> x1 = 4, y1 = 7
(0, -9) ---> x2 = 0, y2 = -9
Then, we have:
[tex]y-7=\frac{-9-7}{0-4}(x-4)\Rightarrow y-7=\frac{-16}{-4}(x-4)\Rightarrow y-7=4(x-4)[/tex]Then, we have:
[tex]y-7=4x-16\Rightarrow y=4x-16+7\Rightarrow y=4x-9[/tex]Therefore, the equation of the line is equal to:
[tex]y=4x-9[/tex]We need to write:
• In the first box ---> ,4
,• In the second box --->, -9
if the scale on a map is inches/miles equal 2/10, how would the folding lengths be represented 15feet.
We will have the following:
First, we know that 1 miles has 5280 feet, so 10 miles will have 52800 feet.
Then we will calculate how 15 feet would be represented:
[tex]x=\frac{2in\cdot15ft}{52800ft}\Rightarrow x=\frac{1}{1760}in\Rightarrow x\approx0.000568in[/tex]So, approximately 0.000568 inches would represent 15 feet.
you are going to set up a stereo system by purchasing separate components. In your price range, you find five different receivers, eight different compact disc players, and 12 different speaker systems. If you want one of each of these components, how many different stereo systems are possible ?
5 receivers
8 compact disc players
12 speaker systems
if we want one of each the possible stereo systems is 5 because is the least amount available
if we try to make the sixth we dont have other receiver
In order for th parallelogram tobe a square, x = = [? ]°4x+17°
We know that the diagonals of a square bisects it's angles and every angles of square are 90°.
The diagnol bisects the parallelogram in two equal parts.
The angle obtained are,
[tex]4x+17^{\circ}[/tex]The sum of the angles are 90 deg.
[tex]4x+17+4x+17=90^{\circ}[/tex][tex]8x+34=90^{\circ}[/tex][tex]8x=56^{\circ}[/tex][tex]x=7^{\circ}[/tex]Thus the value of x is 7 deg.
The functions f(x) and g(x) are shown on the graph.f(x) = |x|What is g(x)?A. g(x)=Ix-5lB. g(x) = Ixl-5C. g(x) = lxl+ 5D. g(x)= |x+5|
Notice that the graph of g(x) is shifted 5 units to the left, then, the function that represents g(x) is:
[tex]g(x)=|x+5|[/tex]WRITE THE RULE FOR THE TRANSLATION. A (X 1.x C D DI D
The rectangle is moved 6 units to the left and 3 units down.
So, the rule of translation will be:
This is the result:
(x - 6, y - 3)
Two similar triangular regions are prepared for development. Grassland Forest 45 yd 60 ya Grassland Perimeter = 240 yd Grassland Area = 2400 yd2 a. It costs $6 per foot to install fencing. How much does it cost to surround the forest with a fence? It costs $ b. The cost to prepare 1 square yard of grassland is $15 and the cost to prepare 1 square yard of forest is costs more to prepare?
Notice that both regions are right triangles.
As for Grassland, its area is given by the formula:
[tex]\begin{gathered} A_G=\frac{1}{2}bh,A_G=2400 \\ \Rightarrow\frac{1}{2}bh=2400 \\ \Rightarrow b=\frac{4800}{h}=\frac{4800}{60}=80 \\ \Rightarrow b=80 \end{gathered}[/tex]Then, the base of Grassland is equal to 80.
Furthermore, we can use the Pythagorean theorem to find the value of its hypotenuse:
[tex]\text{hypotenuse}=\sqrt[]{80^2+60^2}=100[/tex]With this, we have found all the sides of the Grassland triangle, which is:
And the Forest triangle is similar to the Grassland triangle; then, their corresponding sides have the same ratio
Consider the diagram:
Then, due to the similarity between the triangles:
[tex]\begin{gathered} \frac{45}{60}=\frac{x}{80} \\ \Rightarrow x=80\cdot\frac{45}{60}=60 \end{gathered}[/tex]And
[tex]\begin{gathered} \frac{45}{60}=\frac{y}{100} \\ \Rightarrow y=\frac{4500}{60}=75 \end{gathered}[/tex]Then, the Forest triangle is:
a) The perimeter of the Forest triangle is
[tex]\begin{gathered} P_F=45+75+60=180yd \\ \Rightarrow P_F=180\cdot3=540ft \end{gathered}[/tex]540ft, and, since the fence is $6 per foot, we need
[tex]540\cdot6=3240[/tex]$3240 to surround the whole Forest triangle.
b)
The cost of fencing around the forest is $3240 and cost to prepare the grassland is $15750 more than to prepare the forest.
What are similar triangles?Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion.
Given that, Two similar triangular regions are to be prepared for development, the grassland and forest have side length 45 yd 60yd respectively Grassland Perimeter = 240 yd Grassland Area = 2400 yd²
We know that, in similar triangles, the ratio of corresponding sides are equal to the ratio of their perimeters and the ratio of square corresponding sides are equal to the ratio of theirs areas.
Let the perimeter of the forest be x,
Therefore, 45/60 = x/240
x = 180 yd = 540 ft
Since, cost of fencing is $6/foot
Therefore, cost of fencing the forest = 6*540 = $3240
And, Let the area of forest be y,
(45/60)² = y/2400
9/16 = y/2400
y = 1350 yd²
Since, the cost of preparing the forest and the grassland is $15/yd
Therefore, the cost of preparing the forest = 1350*15 = $20250
And the cost of preparing the grassland = 2400*15 = $36000
Therefore, cost to prepare the grassland is $15750 more than to prepare the forest.
Hence, The cost of fencing around the forest is $3240 and cost to prepare the grassland is $15750 more than to prepare the forest.
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Determine if the following equation is linear if the equation is linear converted to standard form AX+by=c
Given the equation:
[tex](-10+y^2)-y^2=-7x+10[/tex]To determine if the equation is a linear equation, the first step is to simplify it. To do so, erase the parentheses and simplify the like terms:
[tex]\begin{gathered} (-10+y^2)-y^2=7x+10 \\ -10+y^2-y^2=7x+10 \\ -10+0y^2=7x+10 \\ -10+0y=7x+10 \end{gathered}[/tex]The terms "+y²" and "-y²" canceled each other, this is why the variable y is multiplied by zero. Then the only variable left is "x", which suggests that the equation represents a vertical line.
To write this equation in standard form, you have to pass the x-term to the left side of the equation and the constant to the right side of it:
[tex]\begin{gathered} -10+0y=-7x+10\text{ \rightarrow add 10 to both sides of the equation} \\ -10+10+0y=-7x+10+10 \\ 0y=-7x+20\text{ \rightarrow add 7x to both sides of the equation} \\ 0y+7x=-7x+7x+20 \\ 0y+7x=20 \\ 7x+0y=20 \end{gathered}[/tex]The line written in standard form is 7x+0y=20.
Vertical lines are considered to be linear equations.
how do we do thios one i askled btainly they got it wrong asnwer its two parts
the difference of a number and 6 is the same as 5 times the sum of the number and 2. what is the number? a. -4 b. -2 c. -1d. 1
Let x represent the number.
the difference of a number and 6. This would be expressed as
x - 6
5 times the sum of the number and 2. This would be expressed as
5(x + 2)
Since both expressions are the same, it means that
x - 6 = 5(x + 2)
We would open the bracket on the right hand side by multiplying each term inside the bracket by the term outside the bracket. It becomes
x - 6 = 5x + 10
5x - x = - 6 - 10
4x = - 16
x = - 16/4
x = - 4
The correct option is A
find the measure of all labeled angles in the diagram
Answer:
∠1 = 127°
∠2 = 53°
∠3 = 127°
∠4 = 37°
∠5 = 53°
∠6 = 90°
∠7 = 37°
∠8 = 143°
∠9 = 37°
∠10 = 143°
Explanation:
If two angles form a straight line, they add to 180°, so ∠1, ∠2, and ∠3 can be calculated as:
∠1 = 180 - 53 = 127°
∠2 = 180 - ∠1 = 180 - 127 = 53°
∠3 = 180 - 53 = 127°
Then, ∠5 is corresponding to 53° because they are in the same relative position. It means that these angles have the same measure, so:
∠5 = 53°
On the other hand, ∠6 is opposite to the right angle, so it has the same measure, then:
∠6 = 90°
∠4, ∠5, and ∠6, form a straight line, so:
∠4 = 180 - ∠5 - ∠6
∠4 = 180 - 53 - 90
∠4 = 37°
Finally, the sum of the interior angles of a triangle is also 180°, so the measure ∠7 will be equal to:
∠7 = 180 - ∠2 - ∠6
∠7 = 180 - 53 - 90
∠7 = 37°
So, the measures of ∠8, ∠9, and ∠10 will be equal to:
∠8 = 180 - ∠7 = 180 - 37 = 143°
∠9 = 180 - ∠8 = 180 - 143 = 37°
∠10 = 180 - ∠7 = 180 - 37 = 143°
Therefore, the answers are:
∠1 = 127°
∠2 = 53°
∠3 = 127°
∠4 = 37°
∠5 = 53°
∠6 = 90°
∠7 = 37°
∠8 = 143°
∠9 = 37°
∠10 = 143°
Determine whether the sample is biased or unbiased. Explain You want to estimate the number of students in your school who drive their own cars to school.You survey every 8th person who enters the cafeteria for lunch.
You want to estimate the number of students in your school who drive their own cars to school.You survey every 8th person who enters the cafeteria for lunch.
Determine whether the sample is biased or unbiased.
Explain
It is biased because the whole population was not properly represented in the sample study.
Which graph shows the solution to the equation (see the attached photo)
Given: An equation
[tex]4^{x-3}=8[/tex]Required: To draw the graph of the solution of the equation.
Explanation: The given equation is-
[tex]4^{x-3}=8[/tex]Solving,
[tex]\begin{gathered} (2^2)^{x-3}=2^3 \\ 2^{2x-6}=2^3 \end{gathered}[/tex]Now since the base on both sides are the same hence the exponents must also be equal i.e.,
[tex]\begin{gathered} 2x-6=3 \\ 2x=9 \\ \Rightarrow x=\frac{9}{2} \end{gathered}[/tex]Hence the graph of the equation can be drawn by taking the equations
[tex]\begin{gathered} y=4^{x-3} \\ y=8 \end{gathered}[/tex]Hence the graph is
Final Answer: Option C is correct.
I need help with my math
From the question, we can deduce the answer using indices which deals with power of numbers, e.g
[tex]\frac{5^2.5^3}{5^4}=\frac{5^{2+3}}{5^4}=\frac{5^5}{5^4}=5^{5-4}=5^1=5[/tex]Also, for the next one,
[tex]\frac{9^4.9^6}{9^8}=\frac{9^{4+6}}{9^8}=\frac{9^{10}}{9^8}=9^{10-8}=9^2[/tex]This applies to every other ones provided in the question,
Considering Option D,
[tex]\begin{gathered} \frac{b^{2k}.b^{3k}}{b^{4k}} \\ \text{where k is 2,} \\ \frac{b^{2(2)}.b^{3(2)}}{b^{4(2)}}=\text{ }\frac{b^4.b^6}{b^8}=\frac{b^{4+6}}{b^8}=\frac{b^{10}}{b^8}=b^{10-8}=b^2 \\ \text{Where k=2, Option D is favoured} \end{gathered}[/tex]Since the equation D favours the solution,
Hence, the best option is D.
please help me with these questions (lesson 2.06 and below)
we have the function
[tex]H(x)=-2\sqrt[3]{x}+1[/tex]For each value of x, substitute in the given function to obtain the value of H(x)
so
For x=-8
substitute
[tex]\begin{gathered} H(x)=-2\sqrt[3]{-8}+1 \\ H(x)=-2(-2)+1 \\ H(x)=5 \end{gathered}[/tex]For x=0
[tex]\begin{gathered} H(x)=-2\sqrt[3]{0}+1 \\ H(x)=-2(0)+1 \\ H(x)=1 \end{gathered}[/tex]For x=1
[tex]\begin{gathered} H(x)=-2\sqrt[3]{1}+1 \\ H(x)=-2(1)+1 \\ H(x)=-1 \end{gathered}[/tex]