3 years ago

How do i do these two while using a proportion?

1 answer:

7 0

For #2, the proportion would be .40/.25 and x/15, then you would cross multiply to find x. and for #3 the proportion would be 15/6 and 75/x and again you would cross multiply to find x. (:

You might be interested in

Help! Click to see question!

EleoNora [17]

Answer:

Step-by-step explanation:

Both equations use x squared

7 0

3 years ago

Read 2 more answers

Find the surface area of a sphere with a volume of 36π in3.

swat32

First use known volume to solve for radius:
$V=\frac{4}{3}\pi r^{3}$
$r=\sqrt[3]{\frac{3V}{4\pi}}$
$r=\sqrt[3]{\frac{3(36\pi)}{4\pi}}$
$r=\sqrt[3]{27}$
$r=3$

Then use the radius to get the surface area:
$A_{surf}=4 \pi r^{2}$
$A_{surf}=4 \pi 3^{2}$
$A_{surf}=4 \pi 9$
$A_{surf}=36\pi\approx113.09$

6 0

2 years ago

Name. Solve using Substitution L y = 3x + 2 6x - 2y = 8

masya89 [10]

Answer:

No solution

Step-by-step explanation:

There is no solution to the system of equations y=3x+2 and 6x-2y=8, meaning that they are parallel to each other on a graph, with no points ever intersecting on each other's lines.

6 0

2 years ago

A book had a length of 5 inches and a width of 10 inches what is the area of the book

jeka94