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3 years ago

Can someone help me

Mathematics

1 answer:

garri49 [273]3 years ago

7 0

Answer:

C. 13,248 square units

Step-by-step explanation:

You gotta find measure of bottom leg of the triangle which 92

Then add that to 100

92 + 100 = 192

You multiply 192 by 69

192 x 69 = 13248

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gina is training for a marathon she ran 4.6 miles on Friday and 6.7 miles on Saturday on Sunday she ran 13 miles how much furthe

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3 years ago

When multiplying the fractions 1/6 and 7/8 what is the product of the numerators?

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3 years ago

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Which of the following is a non terminating decimal ( )<br><br>a)¾ b) ⅘ c)⅓ d) none

balandron [24]

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3 years ago

Jamie recently drove to visit her parents who live 510 miles away. On her way there her average speed was 25 miles per hour fast

tino4ka555 [31]

Answer:

Average speed in mph with which he goes to parent's place = 75 mph

Average speed with he comes back = 50 mph

Explanation:

Distance between Jamie's house and parent's house = 510 miles.

Let u be the average speed in mph with which he goes to their place.

We have the average speed of coming back = (u -25) mph

Total time of journey considering both ways = 17 hours.

Time taken to go their home = 510/u hours

Time taken for coming back = 510/(u-25) hours

So total time = $\frac{510}{u} +\frac{510}{u-25}$

Equating both times we have

$\frac{510}{u} +\frac{510}{u-25}=17\\ \\ 510u-12750+510u=17u^2-425u\\ \\ 17u^2-1445u+12750=0\\ \\ u^2-85u+750=0\\ \\ (u-75)(u-10)=0$

u = 75 mph or u =10 mph

If the average speed in mph with which he goes to their place = 75 mph, average speed with he comes back = 75-25 = 50 mph

If the average speed in mph with which he goes to their place = 75 mph, average speed with he comes back = 10-25 = -15 mph(Not possible)

So, Average speed in mph with which he goes to parent's place = 75 mph

Average speed with he comes back = 50 mph

5 0

3 years ago