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djverab [1.8K]
3 years ago
14

Does anyone know how to do this Or how to calculate this I already have apps like photomath so don't even suggest that

Mathematics
1 answer:
jeka943 years ago
6 0

I'm not sure what the answers you have mean. sorry! I've solved the problem, though, if that helps at all.

4x + 10y = 57

2x + 5y = 38

5y = 38-2x

y = (38-2x)/5

4x + 10((38-2x)/5) = 57

4x + 2(38-2x) = 57

4x + 76 - 4x = 57

0x + 76 = 57

the answer is no solution because 76 \neq 57

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Answer:

<h2>C.</h2>

Step-by-step explanation:

The equationof a circle:

(x-h)^2+(y-k)^2=r^2

<em>(h, k)</em><em> - center</em>

<em>r</em><em> - radius</em>

<em />

We have <em>center = (4, -1) → h = 4, k = -1</em>, and <em>r = 9</em>.

Substitute:

(x-4)^2+(y-(-1))^2=9^2\\\\\huge\boxed{(x-4)^2+(y+1)^2=81}

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3 years ago
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Step-by-step explanation:

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3 years ago
britney is buying a hat at the mall. the shirt costs $31.59, and the hat costs $19.46. if Britney gives the sales clerk $100.00,
kiruha [24]

Answer: 48.95

Step-by-step explanation:

so first I would add together the cost of the shirt and hat

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then I would take away the 51.05 ( the total ) from $100

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3 years ago
Jeff reads 5/7 of a book in 4 hours. At this rate, how much did he read in 1 hour? Please answer this correctly. Don't put a lin
leonid [27]

Answer:

Jeff read 5/28 of a book in 1 hour.

Step-by-step explanation:

The rate given is 5/7 of a book read in 4 hours.

If the questions asks how much he read in 1 hour, it means the answer needed is a unit rate.

A unit rate is a rate per unit. In this case, a rate per hour.

Let’s find how much Jeff read in 1 hour:

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5/7 ÷ 4

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Brainliest? Hope this helped!

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3 years ago
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