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Over [174]
3 years ago
8

Amy can run the 150 meter dash in 50 seconds. john can run 1200 meters in 400 seconds. who runs faster per second?

Mathematics
1 answer:
Sati [7]3 years ago
5 0

Answer:

Amy

Step-by-step explanation:

amy completed a longer distance in a shorter amount of time

rather than john completed a shorter distance in a longer time

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What are the factors of the equation 24x^2=9-30x?
Dennis_Churaev [7]

Answer:

3(4x - 1)(2x + 3)

Step-by-step explanation:

Rearrange the equation into standard form

Subtract 9 - 30x from both sides

24x² + 30x - 9 = 0 ← in standard form

Take out 3 as a common factor

3(8x² + 10x - 3) = 0 ← factor the quadratic

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x term

product = 8 × - 3 = - 24, sum = 10

The factors are - 2 and + 12

Use these factors to replace the x- term, that is

8x² - 2x + 12x - 3 ( factor the first/second and third/fourth terms )

2x(4x - 1) + 3(4x - 1) ← take out the common factor (4x - 1)

(4x - 1)(2x + 3)

24x² + 30x - 9 = 3(4x - 1)(2x + 3) ← in factored form

7 0
3 years ago
At Walmart, apples cost $0.50 each, and grapefruits cost $2 each. You want to spend exactly $15.
Papessa [141]

Define the variables: a is the number of apples I can buy                                                                        g is the number of grapefruits I can buy.

Write the equation: 15 = 0.50a + 2g

6 0
3 years ago
A coin flipped 14 times and it comes up heads 10 times what is the experimental probability of the coin’s coming up heads ?
Gekata [30.6K]

The answer is B.

If a coin is flipped 14 times and lands on heads 10 times the fraction would equal to 10/14.

10/14 simplifies to 5/7.

3 0
3 years ago
Read 2 more answers
Gary had a 40% discount for car speakers. The sale price of the speakers was $96.25. What was the original price of the speakers
Ostrovityanka [42]

Answer:

Step-by-step explanation:

If the price after the discount is subtracted is $96.25 then this is what you do

u times 0.40 x 96.25 which is 38.5 so since you are wanting to know what the price was before the discount you would add 38.5 to 96.25 and when you do that your answer is 134.75

but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25

5 0
3 years ago
Someone please help.
umka21 [38]

Let's go:


\frac{y}{3} = \frac{27}{y} \\\\ y^2 = 27.3 \\\ y^2 = 81 \\\ y = \sqrt{81} \\\ y = 9


I hope I helped you.


8 0
3 years ago
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