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1 year ago

Hi I need help with this homework this is not a test

Mathematics

1 answer:

Lelu [443]1 year ago

4 0

To determine the speed, we will divide the total distance covered by the total time spent traveling.

$speed=distance\div time$ $speed=412.5miles\div7.5hrs$

Note that 7 1/2 is just equal to 7.5.

Divide the numbers above and the answer is:

$speed=55miles\text{ }per\text{ }hour$

Answer:

Ivan was driving at a constant speed of 55 miles per hour.

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How many times larger than 2x10^2 is 2x10^8

Art [367]

1000000 times larger

Step-by-step explanation:

2x10^2 is 200.

2x10^8 is 200000000

2x10^8 is 1000000 times larger that 2x10^2

4 0

3 years ago

2x+2y=-2 3x-2y=12 I do not understand this math and need help with this math equation.

Ksivusya [100]

Answer:

Also see attachments

Step-by-step explanation:

You have two equations and two "unknowns" x and y.

This is an easy one. Add the two equations together, which will eliminate the y terms so you can solve for x:

2x+2y = -2

3x-2y = 12

---------------

5x = 10, so x = 2.

Now plug the 2 back into one of the equations and solve it for y.

2(2)+2y = -2

4+2y = -2

2y = -6

y = -3

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3 years ago

You start savings a $250 a month for the next 22 years to give us a gift to your daughter when she graduates college if you put

Ann [662]

Answer:

$376,475.71

Step-by-step explanation:

FVA Due = P * [(1 + r)n – 1] * (1 + r) / r

FVA Due = 250 * [(1.2916)264 – 1] * (1.2916) / .2916

4 0

3 years ago

Help with these math questions

KonstantinChe [14]

The first one is: Y = (x - 1)² - 16

The third one is: (A) X = 6.
6² - 36 = 0

Still working on the other ones, though.

7 0

3 years ago

Select all expressions that are equivalent to 3x - 2 (x - ) - 1

forsale [732]

Answer:

Step-by-step explanation:

3 0

3 years ago