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Lemur [1.5K]
3 years ago
8

In June, Jim ran a mile in 7 minutes and 45 seconds. After training the entire summer he ran a mile in 5 minutes and 51 seconds

in September. Find the percent of change from June to September of Jim's mile time. (Be sure to change the minutes to seconds.)
Mathematics
1 answer:
gregori [183]3 years ago
8 0

Step-by-step explanation:

abscskksjsjjskskwjwjwjsjsjsjsj

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An Olympic hurdler was part of the way through her race when she fell. She got up and completed the final 353535 meters of her 1
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hurdler falled down before the 353535 steps of 100100100 race.

we need to find where she fell down

so we need subtract 353535 from 100100100

100100100-353535=99746565

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5 0
3 years ago
Solve x
d1i1m1o1n [39]

Step-by-step explanation:

x^{2} - 4x - 7 = 0

First, let's move the 7 to the right-hand side so we can determine what constant we'll need on the left-hand side to complete the square:

x^{2} - 4x = 7

From here, since the coefficient of the x term is -4, we know the square will be (x - 2) (since -2 it's half of -4).

To complete this square, we will need to add (-2)^{2} to both sides of the equation:

x^{2} - 4x + (-2)^2 = 7 + ^{-2}

x^{2} - 4x + 4 = 7 + 4

(x - 2)^{2} = 11

Now we can take the square root of both sides to figure out the solutions to x:

x - 2 = \pm \sqrt{11}

x = 2 \pm \sqrt{11}

7 0
3 years ago
Find 0.45 of 80 A.36 B.3.6 C.0.36 D.0.036
andrew-mc [135]

A

the word 'of' means to multiply

0.45 × 80 = 36


8 0
3 years ago
(5/7) to the power of 4 i need to know as a fraaction
yuradex [85]

Answer:

625/2401

Step-by-step explanation:

5/7 ^ 4 = 5 * 5 * 5 * 5 / 7*7*7*7 = 625/2401

8 0
3 years ago
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Lyrx [107]

Answer:

9: 89°

Step-by-step explanation:

Inside of a triangle is 180, so 180-39-52=89

I'm sorry I can't answer 10 for you

8 0
3 years ago
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