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Umnica [9.8K]
3 years ago
15

20)

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

Answer:

babysitting = $9

working at coffeehouse = $12

x = hours for babysitting

y = hours at coffeehouse

minimum = ≥

9x + 12y ≥ 240

Step-by-step explanation:

just a short note on which symbol you should use when you see these words in inequality questions:

i) use ≥

-more than or equal to

-not less than

-at least

-minimum

ii) use >

-more than

-greater than

iii) use ≤

-less than or equal to

-not more than

-at most

-maximum

iv) use <

-less than

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balandron [24]

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7 0
3 years ago
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Find the solution of this system of equations. Separate the x- and y- values with a comma. x-2y=-24 and x-y=4
defon
X - 2y = -24
x - y = 4

Isolate x in the first equation by adding 2y to both sides.
x = -24 + 2y  

Now plug in this value of x into the second equation.
(-24 + 2y) - y = 4
Solve. Combine all like terms, 2y - y.
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Add 24 to both sides to isolate y.
y = 28

Now plug y back into the first equation to find x.
x - 2(28) = -24
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The solution is (32, 28).
6 0
3 years ago
How to solve this question? Adding algebraic fractions
lawyer [7]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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Nikolay [14]

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Step-by-step explanation:

Get the x by itself by dividing both sides by 8 then reduce -6/8. When you reduce you get -3/4

4 0
3 years ago
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Let f(x) = x2 – 4, x &lt; 0. What is f-1?
Galina-37 [17]

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