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2 years ago

What is the value of r? 3/5 ( r - 7 ) = 1

Mathematics

2 answers:

gulaghasi [49]2 years ago

4 0

R = 26/ 3 im pretty sure

REY [17]2 years ago

3 0

Answer:

8.66666666667

Step-by-step explanation:

Step 1:

3/5 ( r - 7 ) = 1 Equation

Step 2:

3/5r - 4.2 = 1 Multiply

Step 3:

0.6r = 5.2 Add 4.2 on both sides

Step 4:

5.2 ÷ 0.6 Divide

Answer:

r = 8.66666666667

Hope This Helps :)

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Answer this please screenshot 1 is to help answer screenshot 2. What doess 100 mean and 1/2 mean

GalinKa [24]

Answer:

1/2 = 0.5 / 1/2 of 100 is 50

Step-by-step explanation:

I am not sure what you are trying to say here but I will tell you what I know:

1/2 is equal to 0.5

So 50 x 1/2 = 25
And 50 x 0.5 = 25

So 100 x 0.5 = 50

4 0

2 years ago

Write the equation of the line for the following table of values.

Luda [366]

Answer:

We conclude that the equation of the line is:

$y = 5x + 1$

Step-by-step explanation:

The slope-intercept form of the line equation

$y = mx+b$

where

m is the slope

b is the y-intercept

Given the data table

x -3 -5 -7 -9 -11

y -16 -26 -36 -46 -56

From the table taking two points

(-3, -16)

(-5, -26)

Determining the slope between (-3, -16) and (-5, -26)

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-3,\:-16\right),\:\left(x_2,\:y_2\right)=\left(-5,\:-26\right)$

$m=\frac{-26-\left(-16\right)}{-5-\left(-3\right)}$

$m=5$

Thus, the slope of the line is: m = 5

substituting m = 5 and (-3, -16) in the slope-intercept form of the line equation to determine the y-intercept b

$y = mx+b$

-16 = 5(-3) + b

-16 = -15 + b

b = -16+15

b = 1

Thus, the y-intercept b = 1

now substituting m = 5 and b = 1 in the slope-intercept form of the line equation

$y = mx+b$

$y = 5x + 1$

Therefore, we conclude that the equation of the line is:

$y = 5x + 1$

5 0

2 years ago

in Math class we are Learning about Pi which equals 3.14 how do you find the diameter and radius i dont understand it can you gu

kirill [66]

If you're finding diameter or radius based on circumference, use the formula C = πd. You would divide the circumference by pi to get the diameter, then divide the diameter by 2 to get the radius.

If you're finding diameter or radius based on area, use the formula A = πr^2. You would divide the area by pi, then find the square root of that value which is the radius. Just multiply the radius by 2 to find diameter.

7 0

2 years ago

What is the radius of a sphere if its surface area is 2,122.64 square inches? (Use 3.14 for .)

Lady_Fox [76]

$\bf \textit{surface area of a sphere}\\\\
SA=4\pi r^2~~
\begin{cases}
r=radius\\
------\\
SA=2122.64
\end{cases}\implies 2122.64=4\pi r^2
\\\\\\
\cfrac{2122.64}{4\pi }=r^2\implies \cfrac{530.66}{\pi }=r^2\implies \sqrt{\cfrac{530.66}{\pi }}=r$

8 0

2 years ago

Read 2 more answers

What is the square root of 5

Zigmanuir [339]

Answer:

2.236

Step-by-step explanation:

you could estimate it to be between 2 and 3 (because 5 is between 4 and 9)

or you just put it into a calculator

5 0

3 years ago