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Sveta_85 [38]
2 years ago
11

Kerri drives $150$ miles to visit her grandmother. She starts off driving $60$ miles per hour, but then encounters road construc

tion and has to drive $20$ miles per hour the rest of the way. If she spends the same amount of time at the faster speed as at the slower speed, then how many hours did her $150$-mile trip take in total?
Mathematics
1 answer:
andriy [413]2 years ago
5 0

Answer:

5 hours

Step-by-step explanation:

-150 miles in all

-75 miles per speed

<u>60 mph...</u>

60 miles per hour over 75 miles

75 miles ÷ 60 miles = 1.25 hours

<u>20 mph...</u>

20 miles per hour over 75 miles

75 miles ÷ 20 miles = 3.75 hours

<u>Total hours of driving...</u>

60 mph for 1.25 hours

20 mph for 3.75 hours

3.75 hours + 1.25 hours = 5 hours total

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URGENT!!
slava [35]

Answer:

a. 3/5 liters per hour

b .06 hours

Step-by-step explanation:

Change 40 minutes to a fraction of an hour

40 minutes/ 60 minutes = 2/3 hour

It takes 1 2/3 hours to fill the container

Changing to an improper fraction

(3*1+2)/3 = 5/3 hours

We want liters per hour

1 liter per 5/3 hours

1 ÷ 5/3

Copy dot flip

1 * 3/5 = 3/5 liters per hour

Change 100 ml to liters

We know 1000 ml  = 1 lt

100 ml * 1 lt/1000 ml = .1 lt

So 100 ml = .1 lts

.1 lt * 3/5 lt per hour

Changing the fraction to a decimal

.1 lt * .6 lt per hour

.06 hours

4 0
3 years ago
Draw 8 lines that are between 1 inch and 3 inches long. Measure each line to the nearest fourth inch, and make a line plot.
IRISSAK [1]

The length of the line is the difference between the endpoints of the line

The length of each line to the nearest fourth inch is 0.25 inch

<h3>How to measure the length of each line</h3>

The length of the horizontal line is given as:

Length = 2 inches

This is calculated as:

Length = 3 inches - 1 inch

Length = 2 inches

8 lines are to be drawn between the 1 inch and 3 inches point.

So, the length (l) of each line is:

l = \frac{2\ inches}{8}

Simplify the fraction

l = \frac{1\ inches}{4}

Divide

l = 0.25\ inch

Hence, the length of each line to the nearest fourth inch is 0.25 inch

Read more about line measurements at:

brainly.com/question/14366932

6 0
1 year ago
Multiply.
Anvisha [2.4K]

Answer:

2x*x

2x*-5

1*x

1*-5

2x²-10x+x-10 add numbers that have similar variables

-2x²-10x+x-10

=[-2x²-9x-10]

8 0
2 years ago
What are coefficients
Vsevolod [243]

coefficients are the whole number.

Example : 1x+5x

                 ________   + 15

                 3x+16x

that's a fraction the coefficients would be the numbers in front of the variable. Variables are the letters in the equation. Which is the x in my equation.

3 0
2 years ago
25 points!!<br> how are these shapes alike
Pie

Answer:

A. Each shape has 12 edges

Step-by-step explanation:

A is the only one that is true.

The shapes have 6 faces, not 7 or 8.

The edges are the places were two planes intersect, and there are 12, not 6.

7 0
3 years ago
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