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3 years ago

PLEASE HELP BRAINLIES+20 POINTS ASAP!!!!!!!!!!

Mathematics

2 answers:

Cloud [144]3 years ago

4 0

here is the answer + steps! I hope I helped :)

Oksi-84 [34.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

Length = L.

Width = 2L-3.

A = L * W = 170.

L * (2L-3) = 170.

2L^2 - 3L - 170 = 0,

L = (-B +- Sqrt(B^2-4AC))/2A.

L = (3 +- Sqrt(9 + 1360))/4,

L = (3 +- 37)/4 = 0.75 +- 9.25 = 10, and -8.5. In.

Use positive value: L = 10 In.

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ikadub [295]

55 min/10 km=5.5 min/km

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The answer is D.

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3 years ago

Data set: 3,6,8,8,14,27 find mean median and range

maks197457 [2]

Answer:

Median is 8

Range is 24

Step-by-step explanation:

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6 0

3 years ago

Find the ratio and reduce to their lowest terms 9 months and 2 years

professor190 [17]

Answer:

2 years: 9 months

We know that, 1 year =12 months

2 years =2×12 months

=24 months

Given

2 years: 9 months

This can be written as

9months

24months

3months

8months

=8 months :3 months

Hence, 8 months: 3 months is the simplest form of 2 years :9 months

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help me solve this thank you so much.

PtichkaEL [24]

Y= -3. Someone else had the same question I just answered lol

8 0

3 years ago

Complete the table with the number of sit-ups you have to do sunday so that the mean number of sit-ups per day is 100

marissa [1.9K]

The mean is the average of the numbers.

It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

Let the number of sit-ups you have to do Sunday be x. Then the sum of all sit-ups is

100+65+120+150+90+0+x=525+x.

The number of days is 7.

Thus, the mean is

$\text{mean}=\dfrac{525+x}{7}.$

You know that the mean number of sit-ups per day is 100, equate these two means and solve the equation:

$\dfrac{525+x}{7}=100,\\ \\525+x=700,\\ \\x=700-525,\\ \\x=175.$

Answer: 175 sit-ups

5 0

3 years ago