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stepladder [879]
3 years ago
12

Help please im confused

Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0
<h3>Answer: The driver went over the speed limit.</h3>

==================================================

Explanation:

The table shows f = 0.8 for dry concrete road.

The skid mark is d = 90 feet long

Plug these values into the formula below. Use your calculator to simplify.

s = sqrt(30*f*d)

s = sqrt(30*0.8*90)

s = 46.4758

The car's speed was roughly 46.4758 mph

The car is over the 35 mph speed limit.

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Hope this helps!</span>
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3 years ago
What is 9 + 10<br> A. 19<br> B.18<br> C. 20<br> D.21
Tpy6a [65]

Answer:

A. 19

Step-by-step explanation:

10 + 9 = 19

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4 years ago
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Please help with this question. Just ignore the picture at the top
larisa86 [58]

Answer:

s^2

Step-by-step explanation:

Let s be the length of the side of the original square piece. The maximum circle that can be inscribed in the square has a diameter of s, or a radius of s/2. Now, to inscribe a square in this circle, its maximum dimension, the diagonal, will be equal to the diameter of the circle, s. This square will have sides of s/SQRT(2), and so have an area of s^2/2. Since the area of the original piece is s^2, exactly one half of the area has been chopped off in this rather wasteful metal shop procedure.

7 0
3 years ago
Original gas price: $1.25/gal<br> new gas price: $1.75/gal<br> find the percent increase
timofeeve [1]

Answer:

40% Increase

Step-by-step explanation:

Formula:\frac{Final Price-Startingprice}{Original price} *100

1.75-1.25=0.50

0.50/1.25x100=40%

Hence, the percent increase in 40%

<u>Check Answer:</u>

$1.25 x .40=0.50

1.25+0.50=1.75

Hence, 40% is the correct Answer.

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