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Goryan [66]
3 years ago
12

Can someone please answer this question please answer it correctly and please show work please help me I need it

Mathematics
1 answer:
Sedbober [7]3 years ago
7 0

Answer:

C

Step-by-step explanation:

- 2 - 5 would represent a negative start, and further decreasing. So, a situation to describe this could be:

The temperature was -2°C and has <em>decreased</em><em> </em>by 5°C.

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Janice is thinking of two numbers. She says that two times the first number plus the second number is 47. In​ addition, the firs
Whitepunk [10]
Let the numbers be x and y, then
2x + y = 47 . . . (1)
x + 3y = 56 . . . (2)

(2) x 2 => 2x + 6y = 112 . . . (3)

(1) - (3) => -5y = -65 => y = -65/-5 = 13
From (2), x + 3(13) = 56 => x = 56 - 39 = 17

The two numbers are 13 and 17.
3 0
3 years ago
Cindy plans to shop for her school supplies and wants to know how much money she would need to spend. from her friend she knows
vlabodo [156]

Let the cost of 1 notebook be x and the cost of 1 binder be y.

4 notebooks and 3 binders would cost 23.5

Therefore, 4x + 3y = 23.5     (1)

7 notebooks and 6 binders would cost 44.5

Therefore, 7x + 6y = 44.5     (2)

Multiply the first equation by 2.

8x + 6y = 47     (3)

(3) - (2) gives

x = 2.5

Substitute the value of x in (1), we get,

4(2.5) + 3y = 23.5

10 + 3y = 23.5

3y = 23.5 - 10

3y = 13.5

y = 13.5/3

y = 4.5

Hence, cost of 5 notebooks and 3 binders is:

5x + 3y = 5(2.5) + 3(4.5)

           = 12.5 + 13.5

           = 26

Hence, cost of 5 notebooks and 3 binders is $26.

4 0
3 years ago
How to convert 8.25% to a decimal
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Step-by-step explanation:

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