Answer:
The diameter of the circle is 9.0 cm.
[tex]d=9.0\text{ cm}[/tex]Explanation:
Given that the circumference of the circle is 28.26 centimeters.
[tex]C=28.26\text{ cm}[/tex]Recall that the formula for the circumference of a circle is;
[tex]\begin{gathered} C=2\pi r=\pi d \\ d=\frac{C}{\pi} \end{gathered}[/tex]Substituting the given values;
[tex]\begin{gathered} d=\frac{28.26\text{ cm}}{3.14} \\ d=9.0\text{ cm} \end{gathered}[/tex]Therefore, the diameter of the circle is 9.0 cm.
[tex]d=9.0\text{ cm}[/tex]Think about a real-life situation that would create a real-world system of inequalities. Write the situation as a word problem, and provide the system of inequalities.
Word Problem
Dalion goes to the store to get the new promo ice-cream that costs $2 per scoop. The total amount of money with Dalion is $30.
Write an inequality for the number of scoops that Dalion can get.
Let the number of scoops that Dalion can get be x.
If Dalion gets x scoops of ice cream, the price = x × 2 = 2x dollars
But we know that the cost of x scoops of ice cream cannot exceed the total amount of money with Dalion, that is, $30.
So,
2x dollars has to be less than or equal to $30. In mathematical terms, the equation is
2x ≤ 30
Hope this Helps!!!
Cuanto es : Siente mas que cuatro veces un número igual a 13?
Respuesta:
O número es 1.5
Explicacion paso-a-paso:
No sabemos cual o número, entonces o llamamos de x.
Siente mas que cuatro veces un número
7 + 4x
Igual a 13:
7 + 4x = 13
4x = 13 - 7
4x = 6
x = 6/4
x = 1.5
O número es 1.5
Evaluate the following expression.12!
Explanation
Factorial, in mathematics, the product of all positive integers less than or equal to a given positive integer and denoted by that integer and an exclamation point.
[tex]a![/tex]so, to evaluate the expression we need to apply the definition
hence
[tex]\begin{gathered} 12\text{ ! = 12}\cdot11\cdot10\cdot9\cdot8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2\cdot1 \\ 12\text{ ! =}479001600 \end{gathered}[/tex]I hope this helps you
What is the equation of the line? −x−2y=4x + 2y = 4−x+4y=2x−4y=2
We can write the line equation as:
[tex]y=mx+b[/tex]And to find the values of the coefficients 'm', and 'b', we can use the intercepts(where the line cuts the x and y axis) on the graph. Looking at the graph, we have the following interceptions:
[tex]\lbrace(0,2),(4,0)\rbrace[/tex]Plugging those values in our equation, we have:
[tex]\begin{cases}2=b \\ 0=4m+b\end{cases}\Rightarrow4m=-2\Rightarrow m=-\frac{1}{2}[/tex]Writing the line equation in slope intercept form, we have the following:
[tex]y=-\frac{1}{2}x+2[/tex]Rewriting this equation:
[tex]\begin{gathered} y=-\frac{1}{2}x+2 \\ \Rightarrow\frac{1}{2}x+y=2 \\ \Rightarrow x+2y=4 \end{gathered}[/tex]And this is our final answer. The line equation is
[tex]x+2y=4[/tex]1. Which one does not belong *O y=(x+4)(x-6)O y=2x²-88-24O y=x2+5x-25O y=x®+3x?-10x-24
y=x®+3x?-10x-24
Given the fact that all options but the last one are quadratic equations. The only one that does not belong is the last one y=x®+3x?-10x-24 for this one resembles a linear equation whose highest coefficient is above 3x.
For:
a) y=(x+4)(x-6) is the same as y= x² -2x+24
b) y=2x²-88-24
c) y=x²+5x-25
d) y=x®+3x?-10x-24
Hi! I am having trouble with A assignment called "TIME TO SHOP!" I just need answers.
The total item price is $265.50 while the total price with sales tax inclusive is $282.76
Here, we want to determine the sales price of each of the individual items, the total price of all and the appropriate sales tax
To get the price of each, we find the discount off the price of each
Mathematically, that would be;
[tex]\text{Price - (discount percentage }\times\text{ price)}[/tex]We follow through each of the chosen items as follows
1) Blu-Ray player
[tex]\begin{gathered} 42-(12\text{ percent of 42)} \\ =\text{ 42-(}\frac{12}{100}\text{ }\times\text{ 42)} \\ =\text{ 42- 5.04 = \$36.96} \end{gathered}[/tex]2) Jeans
[tex]\begin{gathered} 18.50-(20\text{ percent of 18.50)} \\ =\text{ 18.5 - }(\frac{20}{100}\times18.50) \\ =\text{ \$14.80} \end{gathered}[/tex]3) Set of Books
[tex]\begin{gathered} 15-(15\text{ percent of 15)} \\ =\text{ 15-(}\frac{15}{100}\times15) \\ =\text{ \$12.75} \end{gathered}[/tex]4) Sneakers
[tex]\begin{gathered} 39.5-(32\text{ percent of 39.5)} \\ =\text{ 39.5 - (}\frac{32}{100}\text{ }\times\text{ 39.5)} \\ \\ =\text{ \$26.86} \end{gathered}[/tex]5) Cell Phone
[tex]\begin{gathered} 199-(12.5\text{ percent of 199)} \\ 199-(\frac{12.5}{100}\times\text{ 199)} \\ =\text{ \$174.125} \end{gathered}[/tex]Now, we proceed to get the total of all the items
This is simply obtainable by adding up all the calculated prices
Mathematically, that would be;
174.125 + 26.86 + 12.75 + 14.8 + 36.96 = 265.495
This is a total of $265.50
Now, we want to calculate the total price with the value of the sales tax inclusive
Mathematically, that would be;
[tex]\begin{gathered} \text{Total price + (sales tax percentage of Total price)} \\ =\text{ 265.50 + (}\frac{6.5}{100}\text{ }\times\text{ 265.5)} \\ \\ =\text{ 282.7575 } \\ =\text{ \$282.76} \end{gathered}[/tex]17) A father gave $500 to his two sons. He gave x dollars to one son. Which of the following expressions correctly shows the amount he gave to the other son . *
Total amount given by father = $500
He gave an amount of $x to his first son
then father will left with $500- $x amount
So, He will pay an amount of (500-x) to his other son
Answer : d) 500 - x
Instructions: Find the surface area of each figure. Round your answers to the nearest tenth, if necessary. 8 cm. 5 cm. 9 cm. 4 cm. 10 cm. Surface Area: cm2
Solution
Step 1
State the number of shapes in the figure
The shape is made up of
2 triangles
and
3 rectangles
Step 2
State an expression for the area of a triangle and find the area of the triangle
[tex]\text{The area of a triangle ( A}_1)\text{ = }\frac{1}{2}\times base\text{ }\times height[/tex]Where the base = 10cm
height = 4cm
The area of the triangle after substitution is
[tex]\begin{gathered} A_1=\frac{1}{2}\times10\times4 \\ A_1=20cm^2 \end{gathered}[/tex]Since there are two triangles total area of the triangles = 2 x 20 = 40cm²
Step 3
State the expression for the area of a rectangle
[tex]\text{Area of a rectangle = Length }\times width_{}[/tex]Where
For rectangle 1
length = 8cm
width = 9cm
Area of rectangle 1 after substitution = 8 x 9 = 72cm²
For rectangle 2
length = 10cm
width= 9cm
Area of rectangle 2 after substitution = 9 x 10 = 90cm²
For rectangle 3
length = 5cm
wiidth = 9cm
Area of rectangle 3 after substitution = 9 x 5 = 45cm²
Step 4
Find the total area of the shape
[tex]\text{Total surface area of the shape = 45 +90 +}72+40=247cm^2[/tex]Therefore the surface area of the shape = 247cm²
what is the sum(add) of 2.31 and .21
what is the sum(add) of 2.31 and .21
we have
2.31+0.21=2.52
Remember that
2.31=2+0.31
so
2+0.31+0.21=2+0.52=2.52
Simplify the rational expression. 16b2+40b+25/4b+5 Enclose numerators and denominators in parentheses. For example, (a−b)/(1+n).
Given the rational expression;
[tex]\frac{16b^2+40b+25}{4b+5}[/tex]We shall begin by factorizing the numerator as follows;
[tex]\begin{gathered} 16b^2+40b+25 \\ \text{Note that the coefficient of b}^2\text{ is greater than 1} \\ \text{Therefore we shall multiply the constant by the coefficient of b}^2 \\ \text{That gives us;} \\ 16\times25=400 \\ We\text{ shall now use the sum-product method, which is;} \\ \text{The factors of the constant 400} \\ S\text{hall also sum up to the coefficient of b } \\ \text{These factors are +20, +20} \\ \text{Therefore;} \\ 16b^2+40b+25\text{ becomes;} \\ 16b^2+20b+20b+25 \\ \text{Factorize by groups of two and we'll have} \\ 4b(4b+5)+5(4b+5) \\ \text{This becomes;} \\ (4b+5)(4b+5) \end{gathered}[/tex]The rational expression now becomes;
[tex]\frac{(4b+5)(4b+5)}{(4b+5)}[/tex]The value of a baseball players rookkie card began to increase once the player retired.When he retired in 1995 hid card was worth 9.43.The value has increased by 1.38 each year since then.Yall I really need help I dont get this at all
Given that,
The value of card starts increasing after 1995. In this question, we have to find the value of card at present (2020).
Initial worth = I = 9.43
Final worth = F = ?
Total years = 2020 - 1995 = 25 years
Increasing rate = r = 1.38
The final worth of a card after 'n' years is calculated as:
F = I * r^n
F = 9.43 * (1.38)^25
F = 9.43 * 3140.34
F = 29613.43
Hence, the value of the card in 2020 would be 29613.43.
Up: How Many?If the hexagon is one whole, how many one-thirds (3s) are in 12/3?Explain how the model shows the problem and thesolution.How many 1/3 are in 1 and 2/3?
so we have to divide 5/3 by 1/3
[tex]\frac{\frac{5}{3}}{\frac{1}{3}}=\frac{5}{3}\cdot\frac{3}{1}=5[/tex]so there are 5 1/3's in 1 2/3
Exactly 25% of the marbles in a bag are black. If there are 8 marbles in the bag, how many are black?
Let the total number of marbles in the bag be 'x'.
Given that exactly 25% of the total marbles are black,
[tex]\begin{gathered} \text{ No. of black marbles}=25\text{ percent of total marbles} \\ \text{ No. of black marbles}=25\text{ percent of x} \\ \text{ No. of black marbles}=\frac{25}{100}\cdot x \\ \text{ No. of black marbles}=0.25x \end{gathered}[/tex]Also, given that there are total 8 marbles in the bag,
[tex]x=8[/tex]Then the number of black marbles will be obtained by substituting x=8,
[tex]\begin{gathered} \text{ No. of black marbles}=0.25(8) \\ \text{ No. of black marbles}=2 \end{gathered}[/tex]Thus, there are 2 black marbles in the bag.
Determine if the sequence below is arithmetic or geometric and determine thecommon difference / ratio in simplest form.4,2,1,...
An arithmetic progression is a progression where the next term is found by multiplying the previous by a constant number called the common ratio, for the given progression:
[tex]4,2,1[/tex]If we use 1/2 as a common ratio we get:
[tex]\begin{gathered} 2=\frac{4}{2} \\ 1=\frac{2}{2} \end{gathered}[/tex]Therefore this is an arithmetic progression and its common ratio is 1/2
An architect designs a rectangular flower garden such that the width is exactly two-thirds of the length. If 240 feet of antique picket fencing are to be used to enclose the garden, find the dimensions of the garden. What is the length of the garden? The length of the garden is What is the width of the garden? The width of the garden is
STEP 1:
We'll derive an expression for the width and the length
[tex]\begin{gathered} w=\frac{2l}{3}\text{ where} \\ w\text{ = width} \\ l=\text{ length} \end{gathered}[/tex]STEP 2:
Next, We then derive an expression for the perimeter substituting w as a function of l
[tex]\begin{gathered} \text{Perimeter = 2(l+w)} \\ 240=2(l+\frac{2l}{3}) \end{gathered}[/tex]STEP 3:
Solve for l and subsequently w
[tex]\begin{gathered} \text{Perimeter}=\text{ 240 = 2(}\frac{2l+3l}{3})=2(\frac{5l}{3}) \\ 240=\frac{10l}{3} \\ \text{Cross multiplying gives 240}\times3=5l \\ l=\frac{240\times3}{10}=72ft \\ w=\frac{2l}{3}=\frac{2\times72}{3}=48ft \end{gathered}[/tex]Therefore, length = 72 ft and width = 48ft
2. A certain elevator can hold a maximum weight of 2,800 pounds. This total is determined by estimating the average adult weight as 200 pounds and the average child weight as 80 pounds. Write an inequality that represents this situation, then graph it on the coordinate plane below. Determine a combination of children, c, and adults, a, that can safely ride the elevator.
Let's begin by listing out the given information
Elevator Max weight (e) = 2000 lb
Each adult's weight (a) = 200 lb
Each child's weight (c) = 80 lb
Our inequality is given by:
[tex]200a+80c\le2000-----1[/tex]We will proceed to find the combination of people that can safely ride the elevator
[tex]\begin{gathered} 200a+80c\le2000 \\ \text{If there are 5 a}dults,\text{ we have:} \\ 200(5)+80c\le2000 \\ 1000+80c\le2000 \\ 80c\le2000-1000 \\ 80c\le1000 \\ c\le12.5(\text{that's 12 }children) \\ \text{If there are 8 a}dults,\text{ we have:} \\ 200(8)+80c\le2000 \\ 80c\le2000-1600 \\ 80c\le400 \\ c\le5(\text{5 }children) \end{gathered}[/tex]Compute.
\[ \left(\dfrac 8 3\right)^{-2} \cdot \left(\dfrac 3 4\right)^{-3}\]
[tex]\left(\cfrac{8}{3}\right)^{-2} \left(\cfrac{3}{4}\right)^{-3}\implies \left(\cfrac{3}{8}\right)^{+2} \left(\cfrac{4}{3}\right)^{+3}\implies \cfrac{3^2}{8^2}\cdot \cfrac{4^3}{3^3}\implies \cfrac{4^3}{8^2}\cdot \cfrac{3^2}{3^3} \\\\\\ \cfrac{64}{64}\cdot \cfrac{1}{3}\implies 1\cdot \cfrac{1}{3}\implies \cfrac{1}{3}[/tex]
Evaluate the function at the given x-value.5. f(x) = -4x + 5 ; f(3)
Answer: f (3) = -7
The following table gives the frequency distribution of the ages of a random sample of 104 Iris student
Given:
The frequency values are given for class interval of N = 104 IRSC students.
The objective is to find cumulative frequency, cumuative relative frequency and cumulative percentage.
Cumulative frequency is addition of the previous frequency values.
So, the cumulative freqency values can be cclculated as,
The formula to find the cumulative relative frequency is,
[tex]\text{CRF}=\frac{CF}{N}[/tex]Now, the cumulative relative frequency can be calculated as,
Now, the formula to find the Cumulative percentage is,
[tex]\text{Cumulative \% = CRF }\times100[/tex]Then, the table values for Cumulative percentage will be,
Hence, the required cumulative frequency, cumuative relative frequency and cumulative percentage values are obtained.
These trianglesare congruent bythe trianglecongruencepostulate [?].A. AASB. ASAC. Neither, they are not congruent
At the point of intersection, the angles are equal because they are vertically opposite. This means that in both triangle, there are two congruent angles and a congruent sides. Recall,
if any two angles and the side included between the angles of one triangle are equivalent to the corresponding two angles and side included between the angles of the second triangle, then the two triangles are congruent by the (Angle side angle) ASA rule
Since the given triangles obey this rule, then the correct option is B
Estimate the amount of money he will have after paying these bills each month
First, add all those bills.
[tex]undefined[/tex]Jake wanted to buy candy for $4.87 with a 6% sales tax. He has a $5.00 bill. Does he have enough for his candy?Yes or No
The candy cost $4.87, and the sales tax is 6%, which means the sales tax can be calculated as follows;
[tex]\begin{gathered} \text{Cost}=4.87 \\ \text{Sales tax}=4.87\times\frac{6}{100} \\ \text{Sales tax}=4.87\times0.06 \\ \text{Sales tax}=0.2922 \end{gathered}[/tex]Therefore, the total cost inclusive of sales tax would be;
[tex]\begin{gathered} \text{Cost}+\text{Sales tax}=4.87+0.2922 \\ \text{Cost}+\text{Sales tax}=5.1622 \end{gathered}[/tex]ANSWER:
The total cost would be $5.1622
Hence, Jake does not have enough for his candy
The answer is NO
A line has the equationFind the equation of a parallelline passing through (3,2).Y=1/3x-5
Answer:
y = 1/3x + 1
Explanation:
The equation of a line with slope m that passes through the point (x1, y1) can be founded using the following:
[tex]y-y_1=m(x-x_1)[/tex]If the line is parallel to y = 1/3x - 5, the line will have the same slope. Since the slope of y = 1/3x - 5 is 1/3 because it is the value beside the x, the slope of our line is also 1/3
Then, replacing m by 1/3 and (x1, y1) by (3, 2), we get:
[tex]y-2=\frac{1}{3}(x-3)[/tex]Finally, solve for y:
[tex]\begin{gathered} y-2=\frac{1}{3}(x)-\frac{1}{3}(3) \\ y-2=\frac{1}{3}x-1 \\ y-2+2=\frac{1}{3}x-1+2 \\ y=\frac{1}{3}x+1 \end{gathered}[/tex]Therefore, the equation of the line is:
y = 1/3x + 1
if you receive a 175.84 cents on 314 invested at a rate of 7% for how long did yo invest the principle
Answer:
The number of years you should invest the principal is;
[tex]8\text{ years}[/tex]Explanation:
Given;
[tex]\begin{gathered} \text{Interest i = \$175.84} \\ \text{ Principal P = \$}314 \\ \text{Rate r = 7\% =0.07} \end{gathered}[/tex]Recall that the formula for simple interest is;
[tex]\begin{gathered} i=P\times r\times t \\ t=\frac{i}{Pr} \\ \text{where;} \\ t=\text{time of investment} \end{gathered}[/tex]substituting the given values;
[tex]\begin{gathered} t=\frac{i}{Pr} \\ t=\frac{175.84}{314\times0.07} \\ t=\frac{175.84}{21.98} \\ t=8 \end{gathered}[/tex]Therefore, the number of years you should invest the principal is;
[tex]8\text{ years}[/tex]We can also solve as;
[tex]\begin{gathered} i=P\times r\times t \\ 175.84=314\times0.07\times t \\ 175.84=21.98t \end{gathered}[/tex]then we can divide both sides by 21.98;
[tex]\begin{gathered} \frac{175.84}{21.97}=\frac{21.98t}{21.98} \\ 8=t \\ t=8\text{ years} \end{gathered}[/tex]Select all the answers that are congruent to angle 6.
∠2 and ∠6 are corresponding angles
∠3 and ∠6 are alternate angles
∠6 and ∠7 are vertical angles
Part A: Solve the following equation: 8 + 2(x - 3) = 3x - 3
We need to solve the following equation:
[tex]8+2(x-3)=3x-3[/tex]First we distribute the product in the left side:
[tex]\begin{gathered} 8+2(x-3)=3x-3 \\ 8+2x-6=3x-3 \end{gathered}[/tex]Then we pass all the terms with an x to the left side and all the constant terms to right side:
[tex]\begin{gathered} 8+2x-6=3x-3 \\ 2x-3x=6-3-8 \\ -x=-5 \\ x=5 \end{gathered}[/tex]So the answer is x=5.
this one is super hard
we have the expression
[tex]d\log a+\log c[/tex]Apply property of log
[tex]d\log a+\log c=\log (a^d\cdot c)[/tex]Write the fraction as decimal 182/1000182/1000 written as decimal is ?
Let's convert the following number into a decimal:
[tex]\text{ }\frac{182}{1000}[/tex]182 has 3 digits
1000 has 3 zeros
For this fraction with a denominator of 10, 100, 1000, 10000 and so on.
Converting its decimal form, we just have to count the number of zeros they have. Once we got the number of zeros, that's the number of places we move to put the decimal point in the numerator from right to left.
Let's now answer this to better understand the rule.
Since 1000 has 3 zeros, we move the decimal point 3 places from right to left of 182.
Therefore, the answer is 0.182
On a coordinate plane, point J is located at (-1, units, from point J to point K? 2) and point K is located at (8, 10). What is the distance, in Enter your answer in the space provided.
The expression for the distance between two coordinates are express as :
[tex]\text{ Distance=}\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Substitute the values of the coordinates:
[tex]\begin{gathered} (x_1,y_1)=(-1,-2) \\ (x_2,y_2)=(8,10) \end{gathered}[/tex][tex]\begin{gathered} \text{ Distance=}\sqrt[]{(x_2-x_1)^2+(y_2-y_1)^2} \\ \text{Distance}=\sqrt[]{(8-(-1))^2+(10-(-2))^2} \\ \text{Distance}=\sqrt[]{(8+1)^2+(10+2)^2} \\ \text{Distance}=\sqrt[]{9^2+12^2} \\ \text{Distance}=\sqrt[]{81+144} \\ \text{Distance}=\sqrt[]{225} \\ \text{Distance}=15\text{ unit} \end{gathered}[/tex]So, distance between two points (-1,-2) & (8,10) is 15
Answer : Distance between two points (-1,-2) & (8,10) is 15.
Find the surface area of the following composite figure. 12 ft 32 ft 10 ft 10 ft A. 1480 sq. feet B. 1620 sq. feet C. 1720 sq. feet D. 1820 sq feet
prism area
[tex]\begin{gathered} SA=2lw+2lh+2wh \\ SA=2(10\times10)+2(10\times32)+2(10\times32) \\ SA=2(100)+2(320)+2(320) \\ SA=200+640+640 \\ SA=1480 \end{gathered}[/tex]then, pyramid area
[tex]\begin{gathered} SA=l(2\times ap+l) \\ SA=10(2\times12+10) \\ SA=10(24+10) \\ SA=10(34) \\ SA=340 \end{gathered}[/tex]therfore, area of the figure
[tex]SA=1480+340=1820[/tex]answer: D. 1820 sq feet