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8_murik_8 [283]
2 years ago
11

Help please I'm in a timed test

Mathematics
1 answer:
denis23 [38]2 years ago
6 0

Answer:

it's A

Step-by-step explanation:

y=-x

y=3/2x-5 hope this helps you

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two bike riders ride around in a circular path. The first rider completes one round in 15 minutes and the second rider completes
katrin2010 [14]

Answer:

Rider 1 does one round in 15 min, and will complete another in each consecutive multiple of 15 min

Rider 2 does one round in 18 min, and will complete another in each consecutive multiple of 18 min

Assuming that they start together, they will complete another round together in a time that is both multiples of 15min and 18 min.

Then we need to find the smallest common multiple between 15 and 18.

To smallest common multiple between two numbers, a and b, is equal to:

a*b/(greatest common factor between a and b).

Now, the greatest common factor between 15 and 18 can be found if we write those numbers as a product of prime numbers, such as:

15 = 3*5

18 = 2*3*3

The greatest common factor is 3.

Then the smallest common multiple will be:

(15*18)/3 = 90

This means that after 90 mins, they will meet again at the starting place.

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3 years ago
What is Nine sixteenths of 11 inches?
fenix001 [56]
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4 0
3 years ago
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How would u find 20% of the regular price? what would you do with this amount to find the sale price
hjlf

Answer:

you would multiply the price by .20

Step-by-step explanation:

example:

20% of $160

sale, 20% off

160 x .20 = 32

$32 is 20% of $160, $128 is the sale price

3 0
2 years ago
How many times smaller is the surface area of a cube if the side length is multiplied 1/2<br>​
Tju [1.3M]

Answer:

1/4, or 4 times smaller

Step-by-step explanation:

Since the surface area of a cube is just the combination of the area of all of the square sides, and the formula for those is s^2, if the side length was decreased by 1/2 then the surface area would decrease by (1/2)^2=1/4. Hope this helps!

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