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11111nata11111 [884]

2 years ago

10

Ol-

1 answer:

MArishka [77]2 years ago

3 0

Answer:

I can't understand

Step-by-step explanation:

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Which choice is equivalent to the expression below? 12^-2<br> 12 Points!!!!

Brut [27]

D

Step-by-step explanation:

8 0

3 years ago

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Find an equation of variation where y varies directly as x and y = 7 when x = 0.5 .

Alisiya [41]

Answer:

y = 14x

Step-by-step explanation:

Use the direct variation equation, y = kx

Plug in 7 as y and 0.5 as x, and solve for k:

y = kx

7 = k(0.5)

14 = k

Plug this into the equation:

y = kx

y = 14x

So, the equation of variation is y = 14x

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3 years ago

A stick of butter measures 3 cm wide, 8 cm long, and 2 cm high. What is the volume of the stick of butter?

Jobisdone [24]

Answer:

48cm

Step-by-step explanation:

V= L x W x H

V= 8 x 3 x 2= 48cm

5 0

3 years ago

What is the value of y in the equation 5x + 2y = 20, when x = 0.3?

Dimas [21]

Y=9.25 (short answer but hope this helped u)

5 0

3 years ago

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1. Jane saved up 20 coins, all nickels and

kompoz [17]

Answer:

10 nickels and 10 quarters

Step-by-step explanation:

Given

Number of coins: 20

Vaiue of coins = $3.00

Required

Number of Nickels and Quarters;

<em>Let N =Nickels and Q =Quarters</em>

The total coins is represented as:

$N + Q = 20$

1 nickel is equivalent to $0.05 and 1 quarter is equivalent to $0.25; So

$0.05N + 0.25Q = 3$

Make N the subject of formula in the first equation

$N = 20 - Q$

Substitute this in the second equation

$0.05(20 - Q) + 0.25Q = 3$

$1 - 0.05Q + 0.25Q = 3$

Collect like terms

$-0.05Q + 0.25Q = 3 - 1$

$0.2Q = 2$

Multiply both sides by 5

$5 * 0.2Q = 2 * 5$

$Q = 10$

Recall that N = 20 - Q

$N = 20 - 10$

$N = 10$

6 0

3 years ago