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Sidana [21]
4 years ago
14

Use the formula d=rt to find the average speed of a car if the car traveled 320 miles in 8 hours.

Mathematics
2 answers:
motikmotik4 years ago
7 0

Answer:

c.......................

igor_vitrenko [27]4 years ago
6 0
Distance = rate times time, so rate = distance divided by time. 320 miles = distance and 8 hours = time, so the rate of speed is 320/80, which is forty miles per hour. the answer you're looking for is c!
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In the diagram find the value of x
coldgirl [10]

Answer:

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Step-by-step explanation:

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3 years ago
Solve the equation using square roots. Write your answer in simplest form.<br> Question in picture
GalinKa [24]

Answer:

The solutions to the quadratic equation involving square roots are:

x=2\sqrt{7}i+8,\:x=-2\sqrt{7}i+8

Step-by-step explanation:

Given the equation

\frac{1}{4}\left(x-8\right)^2+8=1

subtract 8 from both sides

\frac{1}{4}\left(x-8\right)^2+8-8=1-8

\frac{1}{4}\left(x-8\right)^2=-7

\left(x-8\right)^2=-28

\mathrm{For\:}\left(g\left(x\right)\right)^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}g\left(x\right)=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}

solving

x-8=\sqrt{-28}

x-8=\sqrt{-1}\sqrt{28}

x-8=\sqrt{28}i       ∵ \sqrt{-1}=i

x=2\sqrt{7}i+8

similarly solving

x-8=-\sqrt{-28}

x-8=-2\sqrt{7}i

x=-2\sqrt{7}i+8

Therefore, the solutions to the quadratic equation involving square roots are:

x=2\sqrt{7}i+8,\:x=-2\sqrt{7}i+8

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3 years ago
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8 0
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4 years ago
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Need help asap please!
marysya [2.9K]
The answer is 8 cups




6 0
4 years ago
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