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alisha [4.7K]
3 years ago
8

2. Decide which estimate is closest to the actual answer. Explain your reasoning.

Mathematics
2 answers:
sashaice [31]3 years ago
6 0
Question A 
take $100.80 divide it by 35 which would equal 2.88 
so round that up for 3.0 for the closest answer

Question B 
take 49.2 and divide it by 6 which would equal 8.2
so round it to the nearest number which would be 8.0

Question C
take 0.78 and divide it by 20L which would equal 0.039
so round that up to the closest number which would be 0.04L
DIA [1.3K]3 years ago
4 0

Answer:


A) The closest answer would be 3. This is true because you can round 100.80 to 100, then divide that by 40, which will get you 2.5, the closest answer to this is 3.0, or option 3.

B) The closest answer would be 8. This is true because you can round 49.2 to 50, then divide that by 10 (the number you get after rounding 6 up), which will get you 5, which is closest to 8.0, or option 2.

C) The closest answer would be 40. When you divide 100 (you rounded .78 to .100) by 20 (you don’t need to round), you get 0.005, this is closest to 0.04.

Hope this helps Buddy!

(I took the quiz)

Please mark me brainliest!


~Courtney


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Urgent please help quick!!!
Radda [10]

Answer:

x=-1\\y=-1

Step-by-step explanation:

5x+5y=-10\\3x-7y=4

Let's solve the first equation for either x or y. I'll do it for x.

5x+5y=-10

Begin by subtracting 5y.

5x=-5y-10

Now divide by 5.

x=\frac{-5y}{5}-\frac{10}{5}

Simplify:

x=-y-2

Now substitute x in the second equation for this value.

3x-7y=4\\3(-y-2)-7y=4

Distribute;

-3y-6-7y=4

Add 6

-3y-7y=4+6

Combine like terms;

-10y=10

Divide by -10.

y=\frac{10}{-10}\\ y=-1

-----------------------------------------------------------------------------------------------------------

Take this value of y and replace it in the first equation to find the value of x.

5x+5y=-10\\5x+5(-1)=-10\\5x-5=-10\\5x=-10+5\\5x=-5\\x=\frac{-5}{5}\\ x=-1

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Answer:

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Step-by-step explanation:

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