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GarryVolchara [31]
3 years ago
12

Shelly biked 21 miles in 4 hours what is shelly's average speed in miles per hour at the same rate how many hours will it take s

helly to bike 42 miles
Mathematics
1 answer:
Alexxandr [17]3 years ago
4 0

Answer:

shelly walks 5.25 miles per hour, it will take her 8 hours to walk 42 miles

Step-by-step explanation:

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A ball is dropped from a height of 25feet and allowed to bounce until it comes to a rest. Each time the ball bounces it rebounds
alina1380 [7]

Answer:

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Step-by-step explanation:

Given

Initial\ Height =25

Rebound = \frac{4}{5}

Required

Determine the height at the third rebound

At first rebound;

H1 = 25 * \frac{4}{5}

Second rebound

H2 = 25 * \frac{4}{5}* \frac{4}{5}

Third rebound

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Hence; the equation is:

H3 = 25 * \frac{4}{5} * \frac{4}{5}* \frac{4}{5}

Solving further;

H3 = 12.8\ ft

8 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST<br>only number 8
olasank [31]
Answer:
Area is = to 1017.88
Circumference is = to 113.1
Step-by-step explanation:
To find the area of a circle use the formula A=πr2
So . . .
A = π18²
A = π324
A = 1017.88
To find the circumfrence of a circle use formula C=2πr
So . . .
C = 2π18
C= 113.1
Hope this helps
Brainliest please!
3 0
2 years ago
Read 2 more answers
Helllllllppppp me pleaseeeeeeeee!!!!
gladu [14]
I think the answer is 1/2!
6 0
3 years ago
What is 16 over 56 by simplifying fractions
Harlamova29_29 [7]
The answer would be 1 1/7
6 0
3 years ago
Read 2 more answers
Write the equation of the linear and exponential functions that pass through the points (0,12) and (1,3).
Triss [41]
to find the equation of a linear equation given two points:
1) find the slope   y=mx+b
here's the equation: (y2-y1)/(x2-x1)
y2- y value of the 2nd point         y1- y value of 1st point
x2- x value of 2nd point             x1- x value of 1st point
1st point- (0, 12) 2nd point- (1,3)
so your slope equation is this: (3-12) / (1-0) or -9/1 or -9
m is -9
2) find the y intercept    y=mx+b
b is whatever y is when x is 0. There's a long way to find it, but you already have it, because one of your points is (0,12). They told you what y was when x was 0.
b is 12.
your linear equation is y=-9x+12
to find the equation of an exponential equation given two points:
1) find a         y=a(b)<span>×
</span>if one of your points has a 0 as the x value, the y value is a. you do have a point like this: (0,12) so...
<span>a is 12
</span>2) find b     y=a(b)<span>×
put what you know a is in the equation: y=12(b)</span><span>×
then put the x and y values of the other point in for x and y in the equation
so (1,3) 1 is x and 3 is y
3=12(b)^1
when the exponent is 1, it disappears:
3=12b
simplify: b= 3/12 or b=1/4

then put all that in the equation:
y=12(3/4)</span><span>×</span>
7 0
3 years ago
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