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baherus [9]
3 years ago
11

Help, please! Struggling!

Mathematics
1 answer:
MArishka [77]3 years ago
6 0

Answer:

65

Step-by-step explanation:

(4-7i)(4+7i) =16 + 28i-28i -49i^2 ➡16 - 49i^2

16 + 49 = 65

the fault here is i^2= -1 and -1 multiplied by -49 is +49 not -49

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Step-by-step explanation:

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Read 2 more answers
The diameter of the wheels on your car is 25 inches. You are going to drive 458 miles today. Each of your wheels is going to tur
Kipish [7]

d = Diameter of wheels = 25 inches

s = Distance to be traveled by the wheels = 458 miles

Converting the miles to inches

s=458\times 5280\times 12=29018880\ \text{inches}

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The number of rotations required to cover the distance would be

\dfrac{s}{D}\\ =\dfrac{29018880}{\pi\times 25}\\ =369479.855599

1 rotation is 360^{\circ} so

369479.855599\times 360=133012748.016^{\circ}

The number of rotations to cover the required distance is 133012748.016^{\circ}

Learn more:

brainly.com/question/23298088

brainly.com/question/1066067

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3 years ago
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Answer:

B 55

Step-by-step explanation:

not positive but if your in a crunch this is what seems right to me, i would wait for others answers tho

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