How is estimation helpful when adding and subtracting decimals

2 answers:

6 0

It's helpful because let's say you have $3.23 and you need to give someone $1.00 then you would need to subtract then what way you will know what you need to do and how many money u have left

Gnesinka [82]2 years ago

4 0

Its a lot easier to do 1.200 - .200. Than to do 1.248- .239. How I see it, estimating always gives you something to fall back on or to help see if your exact answer is accurate

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2.1 x 10^10 OVER 7 x 10^17

vlabodo [156]

2.1 x 10^10/ 7 x 10^17
= 3 x 10^-8

hope this helps and have a great day :)

4 0

3 years ago

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You are in a bike race. When you get to the first checkpoint, you are $\frac{2}{5}$

Black_prince [1.1K]

Answer:

The distance from the star to the second checkpoint is 4 miles

Step-by-step explanation:

The complete question in the attached figure

we know that

When you get to the second checkpoint, you are 1/4 of the distance to the finish

The distance from the star to the second checkpoint is equal to the total distance multiplied by 1/4

The total distance is 40 miles ( see the attached figure)

The distance from the star to the second checkpoint is

$\frac{1}{4}(40)=10\ miles$

<em>Find out the distance from the start to the first checkpoint</em>

Multiply the distance from the star to the second checkpoint by 2/5

$\frac{2}{5}(10)=4\ miles$

6 0

2 years ago

You are an accountant doing an audit for a law firm. A paralegal worked for a client for 5 hours per day for 3 days. The client

blagie [28]

Total hours worked = 5 x 3 = 15 hours

Amount collected = 50 x 15 = $750
Amount paid to the paralegal = 30 x 15 = $450
Amount made by the firm = 750 - 450 = $300

3 0

3 years ago

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Select the correct answer. This graph represents a quadratic function. What is the value of a in this function’s equation?

Aloiza [94]

Answer:

i'm not sure but i think the answer is D

Step-by-step explanation:

the answer will be either A or D because the shape of the graph shows that the value of a is negative

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2 years ago

BRAINLIEST TO CORRECT