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serg [7]
2 years ago
15

Samantha evaluates the expression -5.3 + 7.9 and gets an answer of 2.4.

Mathematics
1 answer:
lys-0071 [83]2 years ago
8 0

Answer:

D.

Step-by-step explanation:

-5.3 rounds up to -5

7.9 rounds up to 8

the sum of the two rounded is 3

her answer of 2.4 rounds to 2, not 3

so her answer is not reasonable

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368 is 64 percent of what amount
bagirrra123 [75]
- - Solve:

\frac{64}{368} *100= \frac{64*100}{368}

- - Answer:
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5 0
3 years ago
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The perimeter of a rectangle is 234 meters.
Licemer1 [7]

I am going to show you how easy this is. Once you understand, you will be able to do this forever.

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Assuming the side of the rectangle are (L) length and (W) width, the perimeter:

2L + 2W = 234

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"the rectangle is twice as long as it is wide,", the equation for this statement:

L = 2W

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In the first equation, we can replace L with 2W, then we have

2(2W) + 2W = 234

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Divide both sides by 6

W = 234%2F6

W = 39 meters is the width

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Remember it said the length is twice the width, therefore:

L = 2(39)

L = 78 meters is the length

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Check this by finding the perimeter with these values

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7 0
3 years ago
What is a+ a/5+ 2/5a
Galina-37 [17]

Answer:

8a over 5

Hope this helps :)

Step-by-step explanation:

8 0
3 years ago
What is the completely factored form of f(x) = 6x3 – 13x2 – 4x + 15?
masya89 [10]

We have to determine the complete factored form of the given polynomial

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Let x= -1 in the given polynomial.

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So, by factor theorem

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Option D is the correct answer.

5 0
3 years ago
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Solve for m.
elixir [45]
M-7/8=5
m=5+7/8
m=47/8

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4 0
2 years ago
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