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1 year ago

22.857142857142858 As a fraction

Mathematics

1 answer:

Mamont248 [21]1 year ago

5 0

Answer:

Step-by-step explanation:

1. The answer is 8/35.

2. This works because 8/35 equals 22.857142857142858.

Please give me brainliest, I really need it! Thank you!

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Traveling with a speed of 70 mph, a car covered a distance D miles in T hours. Write an equation that relates the distance D thi

irina [24]

Answer:

Part A) $D=70T$

Part B) $D=105\ miles$

Step-by-step explanation:

Par A) Write an equation that relates the distance D this car travels in T hours

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $y/x=k$ or $y=kx$

The speed is a proportional relationship between the distance and the time

Let

D ----> the distance in miles

T ----> the time in hours

$D=kT$

In this problem the constant of proportionality k represent the speed of the car in miles per hour

we have

$k=70\ mi/h$

substitute

$D=70T$

Part B) Use the equation to find the distance the car travels between 3:30 p.m. and 5:00 p.m

we know that

The time between 3:30 p.m. and 5:00 p.m is equal to

5:00 p.m-3:30 p.m=1.5 hours

For T=1.5 h

substitute in the equation and solve for D

$D=70(1.5)$

$D=105\ miles$

7 0

3 years ago

If XY= 30, and XZ= 100, then YZ= ____.

marishachu [46]

Answer:

yz= 100-30

yz= 70.

hope it helps.

3 0

3 years ago

A washer and a dryer cost $714 combined. The washer costs $64 more than the dryer. What is the cost of the dryer?

larisa [96]

293 because 714/2 is 357 - 64 = 293

3 0

3 years ago

Read 2 more answers

Recall the chapter example which described the fact that the mean IQ in large, diverse populations is 100 and the standard devia

vova2212 [387]

Answer:

The margin of error for the 99% confidence level for this sample is ±2.23.

None of the given figures is close to the answer:

E. None of the above

Step-by-step explanation:

margin of error (ME) around the mean can be calculated using the formula

ME= $\frac{z*s}{\sqrt{N} }$ where

z is the corresponding statistic of the 99% confidence level (2.576)

s is the population IQ standard deviation (15)

N is the sample size (300)

Using these numbers we get:

ME= $\frac{2.576*15}{\sqrt{300} }$ ≈ 2.23

7 0

3 years ago

The London theater offers child tickets at 10$each and adult tickets at 20$ each.Mrs burham buys 34 tickets at a total cost of 5

kirill115 [55]

Answer:

A+C=34

10C+20A=570

4 0

3 years ago