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Triss [41]
3 years ago
5

A car travels at an average speed of 56 miles per hour. How long does it take to travel 322 miles?

Mathematics
2 answers:
Goryan [66]3 years ago
7 0

Answer:

5.75

Step-by-step explanation:

322/56=5.75

so the answer would be 5.75 or rounded up to 6

dezoksy [38]3 years ago
5 0

Answer:

5.75

Step-by-step explanation:

So first, let's say that the car is going 10 miles per hour. and we need to know how far it goes in 10 hours. Simply times it by 10.

In this case, we're doing the reverse. Dividing 100 by 10.

So we just simply divide 322 by 56, or as a fraction: "322/56".

Your answer will be 5.75.

Hope this helped, please give me brainliest if you know how to!

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3 years ago
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AveGali [126]

Answer:

FD≈25.94.. rounded = 26

Step-by-step explanation:

FD²=12²+(4x+11)²

FD²=144+16x²+88x+121

FD²=265+16x²+88x

also

FD²=12²+(13x-16)²

FD²=144+169x²-416x+256

FD²=400+169x²-416x

thus

265+16x²+88x = 400+169x²-416x

16x²-169x²+88x+416x+265-400 = 0

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we will solve this quadratic equation by suing the quadratic formula to find x

x=(-504±sqrt(504²-4(-153)(-135)))/2(-153)

x=(-504±\sqrt{504^{2}-4(-153)(-135) })/2(-153)

x=(-504±\sqrt{254016-82620 })/-306

x=(-504±\sqrt{171396})/-306

x=(-504±414)/-306

x=(-504+414)/-306 and x=(-504-414)/-306

x=-90/-306 and x=-918/-306

x= 5/17 , 3

substituting x by the roots we found

check for 5/17:

4x+11 = 4×(5/17)+11 = (20/17)+11 = (20+187)/17 = 207/17 ≈ 12.17..

13x-16 = 13×(5/17)-16 = (65/17)-16 = (65-272)/17 = -207/17 ≈ -12.17..

check for 3:

4x+11 = 4×3+11 = 12+11 = 23

13x-16 = 13×3-16 = 23

thus 3 is the right root

therfore

ED=23 and CD=23

FD²=FE²+ED² or FD²=FC²+CD²

FD²=12²+23²

FD²=144+529

FD²=673

FD=√673

FD≈25.94.. rounded = 26

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3 years ago
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Answer:

Parallelogram

Result

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<h3>= 60.5 feet2</h3>

<h2>60.5 cm²</h2>
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