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2 years ago

Solve for j (show steps)

Mathematics

1 answer:

MissTica2 years ago

3 0

1. k (j - 3) = m

Divide the k on both sides -> j - 3 = m/k

Add the 3 on both sides -> j = (m/k) +3

2. 3 (8 - x) + 12 = 102 - 6x

Subtract the 12 on both sides -> 3 (8 - x) = 90 - 6x

Add the 6x on both sides -> 3 (8 - x) + 6x = 90

Divide both sides by 3 -> 8 - x + 6x = 30

Combine like terms -> 8 +5x = 30

Subtract 8 from both sides -> 5x = 22

Divide both sides by 5 -> x = 22/5

3. Sorry, I can't remember exactly how to do the last one.

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2 years ago

Read 2 more answers

The volume v of a gas kept at constant temperature varies inversely with the pressure p. If the pressure is 24 pounds per square

daser333 [38]

Answer:

$V=12\ ft^{3}$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

In this problem

$P*V=k$

step 1

Find the value of K

For $P=24\ psi ,V=15\ ft^{3}$

substitute

$24*15=k$

$k=360$

the equation is $P*V=360$

step 2

For $P=30\ psi ,V=\ ft^{3}$

substitute in the equation

$(30)*V=360$

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3 years ago

Find the radius of a circle with an area of 380 in².

Likurg_2 [28]

Answer:

11 inches

Step-by-step explanation:

The area of a circle can be found using:

$a=\pi r^{2}$

We already know that the area is 380, so we can substitute 380 in for a.

380= $\pi r^2$

Now, we need to find the radius. To do this, we need to get r by itself

First, divide both sides by pi

$380/\pi =\pi r^2/\pi$

120.95775675=r^2

Since r is being squared, we need to take the square root of both sides

$\sqrt{120.95775675}=\sqrt{r^2}$

10.9980796846=r

If we round to nearest whole number, our radius is 11 inches

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3 years ago