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Mathematics

2 answers:

OlgaM077 [116]3 years ago

8 0

It is 35 miles becaues you are adding

35 each hour

9966 [12]3 years ago

7 0

Answer:

35 milers per hour

Step-by-step explanation:

from hours 4-5 you subtract 175-140=35

from hours 5-6 you subtract 210-175=35

The difference for both hours is 35.

I hope this helps you understand the problem!

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What is the slope of a line perpendicular to the line whose equation is

garik1379 [7]

Answer:

Step-by-step explanation:

6 0

3 years ago

Select the assumption necessary to start an indirect proof of the statement. If 3a+7 < 28, then a<7.

pashok25 [27]

When applying indirect proofs, we assume the negation of the conclusion is true, and show that this assumption would lead to nonsense, or contradiction.

In our case we assume a is not smaller than 7, that is we assume a≥7.

a≥7 then, multiplying both sides by 3:
3a≥21, then, adding both sides 7:

3a+7≥28,

which is a contradiction because 3a+7 is smaller than 28.

So our assumption is wrong, which means the opposite of it is correct.

Answer: assume a≥7

7 0

3 years ago

During summer, when the snow melts, the water level of the Yukon River increases. If the water level of the river increased by 7

kondaur [170]

Answer:

13 centimeters per day.

Step-by-step explanation:

We have been given that during summer, the water level of the river increased by 78 centimeters in 6 days. We are asked to find the water level increase rate in centimeters per day.

To find the water level increase rate per day, we will divide total increase by total days as:

$\text{Water level increase rate per day}=\frac{78\text{ cm}}{6\text{ days}}$