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Galina-37 [17]
3 years ago
5

The area of an circle with 2.2 radius

Mathematics
1 answer:
lana66690 [7]3 years ago
4 0
The area of a circle is
Лx r²
 so you  would take 3.14 times 2.2²
 3.14 x 4.84
so your answer would be 15.19. 
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The total stopping distance T for a vehicle is T = 2.5x + 0.5x 2 , where T is in feet and x is the speed in miles per hour. Appr
Kobotan [32]

Answer:

%  change in stopping distance = 7.34 %

Step-by-step explanation:

The stooping distance is given by

T = 2.5 x + 0.5 x^{2}

We will approximate this distance  using the relation

f (x + dx) = f (x)+ f' (x)dx

dx = 26 - 25 = 1

T' =  2.5 + x

Therefore

f(x)+f'(x)dx = 2.5x+ 0.5x^{2} + 2.5 +x

This is the stopping distance at x = 25

Put x = 25 in above equation

2.5 × (25) + 0.5× 25^{2} + 2.5 + 25 = 402.5 ft

Stopping distance at x = 25

T(25) = 2.5 × (25) + 0.5 × 25^{2}

T(25) = 375 ft

Therefore approximate change in stopping distance = 402.5 - 375 = 27.5 ft

%  change in stopping distance = \frac{27.5}{375} × 100

%  change in stopping distance = 7.34 %

6 0
3 years ago
How to find the percentage that is not shaded on the grid?
Lostsunrise [7]
There's no question lol
3 0
3 years ago
Choose the expression that would equal the number of hours in the following question.
Minchanka [31]
<span>B. 285/302. This is the correct answer because it is the only choice which is roughly the same ratio as 47.5/50.5 which is the ratio needed to determine how long it would take to go 47 1/2 miles in a car that averages 50 1/2 miles per hour. The mathematical equation which represents the problem is: 50.5/1 = 47.5/A (A = hours) which is the same as 50.5 A = 47.5 which means A = 47.5/50.5 which means A = .94 hours. 285/302 also equals .94.</span>
5 0
3 years ago
Here's the rest of my points for anyone who wants them :)
kramer

Answer:

7

Step-by-step explanation:

line in the middle is an angle bisector

14/6 = 21 / 3x - 12

first, cross multiply

14 (3x - 12) = 6*21

Remove the brackets

42x - 168 = 126

Add 168 to both sides

42x = 168 + 126

Combine

42x = 294

Divide by 42

x = 294/42

x = 7

chegg

brainly.com/question/16979551?utm_source=android&utm_medium=share&utm_campaign=question

3 0
2 years ago
Read 2 more answers
Rectangle WXYZ with y axis<br>​
Gre4nikov [31]

Answer:

I dont understand comment on this and i can help you out

Step-by-step explanation:

:)

7 0
3 years ago
Read 2 more answers
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