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Serjik [45]
3 years ago
8

Please help me ASAP!!

Mathematics
2 answers:
Sergio [31]3 years ago
7 0

Answer:

x  = 16

Step-by-step explanation:

The sum of measures of these three angles of any triangle is equal to 180 °

54 + 90 + (2x + 4) = 180

144 + 2x + 4 = 180

148 + 2x = 180

2x = 180 - 148

2x = 32

x= \frac{32}{2} \\\\x=16

Olin [163]3 years ago
7 0

Focus on triangle KLM. Since JKLM is a rectangle, angle KLM is right. Since the sum of the interior angles of every triangle is 180, we deduce that

\hat{K}+\hat{L}+\hat{M}=180

Now plug the values for each angle and you have

54+90+(2x+4)=180

Move 54 and 90 to the right side to get

2x+4=36 \iff 2x=32 \iff x=16

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The car's speed in feets per second is 79.2, Hence, it will cover a distance of 158.4 feets in 2 seconds.

Car's speed in miles per hour = 54 miles per hour

Recall :

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Car's rate in feet per second

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Therefore, the car will cover a distance of 158.4 feets in 2 seconds.

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