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3 years ago

Solve 7w – 3r = 15 for r. Show your work.

2 answers:

5 0

What's w?

Well without W, we just have to trial and error.

R could be 2.

7w - 3r = 15
7w - 3(2) = 15
7w - 6 = 15
7w = 21
/7 /7
w = 3

So if W = 3, R could be 2.

krek1111 [17]3 years ago

4 0

7w - 3r = 15
7w - 3(2) = 15
7w - 6 = 15
7w = 21
/7 /7
<span> w = 3</span>

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In 3/4 pound of spice mix, there are 5/6 cups of cinnamon.

earnstyle [38]

Answer:

$9\div 10$

Step-by-step explanation:

$5\div 8$

to get cinnamon qty in the spice we do $5\div 6\div 3\div 4$

5 0

3 years ago

Match each power of a power expression with its simplified expression.

VARVARA [1.3K]

Answer:

> $(4^6)^{-3}$ = $\frac{1}{4 ^ {18}}$

> $(4^{-3})^{-3}$ = $4 ^ 9$

> $(4^0)^{-9}$ = $4 ^0$

> $(-4^{-9})^2$ = $(-4) ^ {-18}$

Step-by-step explanation:

We have to expand the powers of each of them:

> $(4^6)^{-3}$ = $4^{(6 * -3)}$

= $4 ^ {-18}$

$(4^6)^{-3}$ = $\frac{1}{4 ^ {18}}$

> $(4^{-3})^{-3}$ = $4 ^ {(-3 * -3)}$

$(4^{-3})^{-3}$ = $4 ^ 9$

> $(4^0)^{-9}$ = $4 ^ {(0 * -9)}$

$(4^0)^{-9}$ = $4 ^0$

> $(-4^{-9})^2$ = $-4 ^ {( -9 * 2)}$

$(-4^{-9})^2$ = $-4 ^ {-18}$

8 0

3 years ago

Read 2 more answers

A cook needs 4 cups of vegetable broth for a soup recipe. How much is this in pints?

kramer

I believe the answer is 2 because 1/2 x 4 = 4/2 =2

7 0

3 years ago

You want to put a fence around your field. The cost of fencing is $60 per meter. The

Darina [25.2K]

Cost per meter(C) = $60/m
Length of rectangular field(L) = 50m
L = 2W
-> W = L/2
-> W = 50/2
-> Width of rectangular field = 25m
Cost of one field length(l) = L x C
-> l = 50 x 60
-> l = $3000
Two of the lengths of the field = 2 x l
-> 2 x $3000
-> $6000

Cost of one field width(w) = W x C
-> w = 25 x 60
-> w = $1500
Two of the widths of the field = 2 x w
-> 2 x $1500
-> $3000

Cost of fencing entire field = $6000+$3000
Hence, total field cost = $9000

3 0

3 years ago

12x5 – 10x2 + x – 45

qaws [65]

(a)
$12x ^{5} - 10x ^{2} + x - 45$
(b)we have 4 terms in this expression.
(c)+12 is the leading coefficient in
$12x ^{5}$

(d) constant is -45

6 0

3 years ago