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3 years ago

6

Tiana uses the equation c equals 21h to figure out the total amount,c, she should charge a costumer for babysitting for h hours.

What is the constant of proportionality? What does it mean?

1 answer:

Virty [35]3 years ago

4 0

Answer;sorry I don't know

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soybean meal is 16% protein; cornmeal is 8% protein. how many pounds of each should be mixed together in order to get 320-lb mix

nlexa [21]

Answer:

120 lb of soybean meal

200 lb of cornmeal

Step-by-step explanation:

S = pounds of soybean meal

C = pounds of cornmeal

S + C = 320 → C = 320 – S

0.16S + 0.08C = 0.11 × 320 = 35.2

16S + 8C = 3520

16S + 8(320 – S) = 3520

16S + 2560 – 8S = 3520

8S + 2560 = 3520

8S = 960

S = 120

C = 320 – 120 = 200

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3 years ago

If y=x^2, then which expression is equivalent to -y?

iris [78.8K]

Answer:

Step-by-step explanation:

D

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4 years ago

Using the spinner above, what is the probability that you land on red or blue?

natta225 [31]

Answer:

75%

Step-by-step explanation:

red is 50 and the blue is 25

3 0

3 years ago

I need help from people that know the answer is right!!PLEASE HELP ASAP

nikdorinn [45]

Radius=r=3ft

Its a sphere

$\boxed{\sf Volume=\dfrac{4}{3}πr^3}$

$\\ \sf\longmapsto Volume=\dfrac{4}{3}\times\dfrac{22}{7}\times 3^3$

$\\ \sf\longmapsto Volume=\dfrac{4\times 22}{7}\times 9$

$\\ \sf\longmapsto Volume=113.1ft^3$

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3 years ago

7x+y=-3 2x=3y=-14 what is x what is y

wolverine [178]

<h3>Answer:</h3>

(x, y) = (-1, 4)

<h3>Step-by-step explanation:</h3>

We assume your two equations are ...

7x + y = -3
2x - 3y = -14

You can eliminate the y-variable by multiplying the first equation by 3 and adding the second.

3(7x +y) +(2x -3y) = 3(-3) +(-14)

23x = -23 . . . . . . . simplify

x = -1 . . . . . . . . . . . divide by 23

7(-1) + y = -3 . . . . . substitute for x in the first equation

y = 4 . . . . . . . . . . . add 7

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3 years ago