Molly is writing a paper for her history class. To complete her paper, Molly must spend 2 hours on research and 1 hour writing each page. She writes the expression p + 2 where p equals the number of pages . Use the expression to evaluate the number of hours needed for 10 pages and evaluate the number of hours needed for 19 pages . Please help

Answers

Answer 1

Answer: 9 hour if you add and muilpy it

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A printer can print 60 pages in 4.8 minutes. a) If the printer prints at the same rate, how long will it take to print 200 pages?

b) How many pages would it print in 7.2 minutes?

Answers

it's: a) 16 and b) 90

A car leaves a town traveling at 60 miles per hour. Two hours later, a second car leaves the town traveling the same route and overtakes the first car in 6 hours and 40 minutes. How fast was the second car traveling?

Answers

After two hours, the first car has traveled (2 x 60) = 120 miles.
That's the gap that the second car has to close.

The second car closes the gap of 120 miles in 6-2/3 hours.
He must have exceeded the first car's speed by (120/6-2/3) mph.

6-2/3 = 20/3

120 divided by 20/3 = 120 x 3/20 = 360/20 = 18 mph

The second car exceeded the first car's speed by 18 mph,
so he had to be traveling (60 + 18) = 78 mph to catch up.

Check:

In 6-2/3 hours . . .

The first car covers (60 x 20/3) = 400 miles.

The second car covers (78 x 20/3) = 520 miles.
This is the same distance as the first car PLUS the 120
that he was behind when he started out.
yay !

78 mph
The second car travels 520 miles in 400 minutes. 520/400=1.3. 1.3*60=78.

Help me !!! Solve: 3b − 2 = 7

Answers

Answer:

B=3

Step-by-step explanation:

3b - 2 = 7
+2 +2
3b = 9
Divide by 3 on both sides...
b = 3

Within the metric system all units are based on the numbera. 1.
b. 100.
c. 10.
d. 1000.

Answers

Answer:

The answer is the option C $10$

Step-by-step explanation:

we know that

The metric system is a system of measuring based on the meter, kilogram and second (MKS). Is based on the powers of the number $10$

Within the metric system all units are based on the number 10

Jacob trims trees and mows lawns during the summer months he earns 50$ per lawn and 120$ per tree he wants to purchase a car for 4,500if Jacob plans to mow 45 lawns this summer how many trees must he trim to earn at least 4,500