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belka [17]
3 years ago
13

**please give me the steps to solve this, will mark brainlyest if leads to correct answer**

Mathematics
1 answer:
ZanzabumX [31]3 years ago
3 0

Answer: The car will skid 200 miles

Step-by-step explanation:

The formula S= 7/2√2D

can be used to approximate the speed S, in miles per hour, of a car that has left skid marks of length D, in feet. To determine how far a car will skid at 70 mph, we will substitute 70 mph for S in the formula. It becomes

70 = 7/2√2D

We will take squares of both sides. This is to simplify the square root on the right had side of the equation. It becomes

70^2 = 7^2/2^2(√2D)^2

4900 = 49/4 × 2D

4900 = 49D/2

Cross multiplying,

49D = 2 × 4900 = 9800

D = 9800/49 = 200

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Answer:

14.1 cm

Step-by-step explanation:

first find the base diagonal :

base di = Square root (8^2 + 6^2) = 10cm

so,

diagonal = Square root (10^2 + 10^2) = 14.1 cm (ANS)

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4 years ago
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7 0
4 years ago
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Please help; I’m hopeless.
Yuliya22 [10]
Well, you have to find 2 of the same number that add together to make that middle number before the c. Then you have to multiply those 2 identical numbers together to find the value of c!——————————————————————So! For number 10, 7+7 is 14, so 7 and 7 are your two identical numbers.——————————————————————Then you have to multiply them to get c! 7•7=49, so 49 is c.——————————————————————I’ll do 11 for you as well, 12+12=24, and 12•12=144, so 144 is c.
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4 years ago
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