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2 years ago

Estimate the following sum using front-end estimation. 48.1 + 29.7 + 11.8

1 answer:

6 0

Rounding up when the decimal is above 5, Rounding down when the decimal is 5 and below

the answer you are looking for would be 48 + 30 + 12 = Approximately 80 estimate

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Using your answer from #3, how many hours will

Sphinxa [80]

Answer:

5 hours cuz 75 divided by 15 is 5 or 15 x 5 is 75

3 0

2 years ago

Read 2 more answers

Anne is running on a trail at an average speed of 6 miles per hour beginning at mile marker 4. John is running on the trail at t

Sphinxa [80]

Answer:

John is running faster.

Step-by-step explanation:

Given that:

Average Speed of Anne = 6 miles per hour

Speed of John can be represented in the table below:

$\begin{center}\begin{tabular}{ c c}Time (hours) x & Mile Marker y \\ 0 & 1 \\ 0.5 & 4.5 \\ 1 & 8 \\ 1.5 & 11.5 \\\end{tabular}\end{center}$

To find:

Who is running faster of the both i.e. Anne and John?

Solution:

Here, to find the faster runner we can compare the average speed of both the runners.

We are given that, average speed of Anne = 6 miles per hour

We will have to calculate the average speed of John to find the faster runner.

<em>Average speed</em> can be calculated by dividing the total distance traveled with the total time taken.

Total distance traveled by John = 11.5 - 1 = 10.5 miles

Total time taken by John = 1.5 hours

Average speed of John = $\frac{10.5}{1.5} = 7\ miles/hr$

Clearly Average speed of John is greater than that of Anne's.

Therefore, <em>John runs faster</em>.

6 0

2 years ago

Last month,James bought a tree that grows 3 cm each day. It was 5 cm tall when he bought it and now it is 68 cm tall. The equati

pshichka [43]

Answer:

james has had the plant 21 days

Step-by-step explanation:

5 +3d= 68

5+3d-5= 68-5

3d= 63

3d/3=63/3

d=21

4 0

2 years ago

A plant grows 3 centimeters in 10 days. How much does it grow per day? Write your answer as a fraction in simplest form.

iogann1982 [59]

Answer:

It grows 0.3 cm per day.

Step-by-step explanation:

Divide 3cm by the 10 days. [ 3 / 10 = 0.3 ]

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2 years ago

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Please help i can’t figure out the scale factor on these polygons

Pani-rosa [81]

Answer: Scale of 2:1

Step-by-step explanation:

All the angles are the same. So its the same polygon just bigger.

Line DA multiplied by a factor of 2 will make is as long as Line ZW.

Line AB multiplied by 2 will also make it equal to Line WX

From that we can assume that Lines XY and YZ are equal to Lines BC and CD

5 0

2 years ago