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3 years ago

Please help, I'll mark brainliest.

Mathematics

1 answer:

GREYUIT [131]3 years ago

8 0

I'm almost certain it's C :)

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You walk forward at 1.5m/s for 8s.Your friend decides to walk faster and starts out at 2.0m/s for the first 4s.Then she slows do

Dima020 [189]

Im not able to make a distance-time graph, since they don't have a graphing app but I've done this type of problem.

They walked the same distance.
You: 1.5x8=12
Friend: (2x4)+(1x4)=12

8 0

4 years ago

My question got deleted for some reason??? anyways

lakkis [162]

Answer:

5.5 + 8.5 = 14

14/2=7

The average is 7

7 x 6.5 = 45.5

Average length x height = area

7 x 6.5 = 45.5

Step-by-step explanation:

6 0

3 years ago

A triangular piece of rubber is stretched equally from all sides, without distorting its shape, such that each side of the enlar

OverLord2011 [107]

Answer:

The area of the enlarged triangle is $4$ times the original area

Step-by-step explanation:

we know that

The scale factor is equal to divide the measurement of the length side of the enlarged triangle by the the measurement of the length of the corresponding side of the original triangle

In his problem

Let

x------> the length side of the original triangle

2x-----> is the length of the corresponding side of the enlarged triangle

$scale\ factor=\frac{2x}{x}=2$

$scale\ factor> 1$ -------> that means is increasing

The scale factor squared is equal to the ratio of the area of the enlarged triangle divided by the area of the original triangle

Let

m-------> the area of the enlarged triangle

n------> the area of the original triangle

r-------> scale factor

$r^{2} =\frac{m}{n}$

we have

$r=2$

substitute

$2^{2} =\frac{m}{n}$

$m=4n$

therefore

The area of the enlarged triangle is $4$ times the original area

8 0

3 years ago

0.84 is 10 times as much as 8.4 and 1/10 of what ? Please help

lorasvet [3.4K]

8.4 should be your answer

6 0

3 years ago

Three consecutive odd integers have a sum of 33

KATRIN_1 [288]

Three consecutive integers that add up to 33 are 2 above and lower than a middle number. This means that the average of these 3 numbers will be the same. Therefore, 33/3=11 as the average. Therefore 11 is the middle number, 9 is 2 below (a consecutive odd integer) and 13 is 2 above (a third consecutive odd integer). Therefore the 3 numbers are 9, 11, and 13.

4 0

3 years ago

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