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2 years ago

Can anyone explain to me the concept of adding and subtracting integers with the same sign?!..

Mathematics

1 answer:

otez555 [7]2 years ago

3 0

Just take the greatest numbers sign

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Find an equation for a line that passes through (-2,3) and (6,-1)

kompoz [17]

Answer:

I think it's y = -1/2x -2

Step-by-step explanation:

use the formula y - y1/ y2- y1= x - x1/x2-x1

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2 years ago

One hundred sixty divided by one fourth equals what

Anna35 [415]

40 ......................

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3 years ago

Use factoring to rewrite each expression in n equivalent from. Use the fewest number of terms possible. Show each step of your w

goldfiish [28.3K]

A. 4x+10

B. 9x+3

These are the answers to the questions. You just add the like terms together and BAM! You're answer. Hope this helps (:

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2 years ago

Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same poi

skelet666 [1.2K]

Answer:

Alan: 200 m/min

Brian: 150 m/min

Step-by-step explanation:

Given : Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same point. Alan races around the track in 45 seconds before Brian does and overtakes him every 9 minutes.

To find : What are their rates, in meters per minute?

Solution :

Let n represent the number of laps that Alan completes in 9 minutes.

Then n-1 is the number of laps Brian completes.

45 seconds = 3/4 minutes.

The difference in their lap times in minutes per lap is

$\frac{9}{(n -1)}-\frac{9}{n} =\frac{3}{4}$

Solving the equation we get,

$\frac{9n-9n+9}{n(n -1)} =\frac{3}{4}$

$9\times 4=3\times n(n -1)$

$36=3\times n(n -1)$

$n^2-n-12=0$

$n^2-4n+3n-12=0$

$n(n-4)+3(n-4)=0$

$(n-4)(n+3)=0$

$n=4,-3$

Neglecting n=-3

So, n=4

Then Alan's speed in m/min is

$S=\frac{D}{T}$

$S_a=\frac{4\times 450}{9}$

$S_a=200 m/min$

Brian completes 3 laps in that 9-minute time, so his rate is

$S_b=\frac{3\times 450}{9}$

$S_b=150 m/min$

Therefore, Alan: 200 m/min

Brian: 150 m/min

4 0

2 years ago

What is the measure of the indicated angle?

snow_lady [41]

Answer:

110

Step-by-step explanation:

The angles are alternate exterior angles and alternate exterior angles are equal when the lines are parallel

? = 110

5 0

1 year ago

Read 2 more answers