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MAXImum [283]
2 years ago
9

Frazer cycles the first 20 miles at an average speed of 21 mph. The second part is more uphill, and he only manages 13mph. By wh

at percentage did the speed decrease
Mathematics
1 answer:
Artist 52 [7]2 years ago
3 0

Answer:

 38.1% decrease

Step-by-step explanation:

A percentage change is found from ...

 % change = (change)/(original amount) × 100%

 = (new value - original amount)/(original amount) × 100%

 = (13 -21)/21 × 100% = -8/21 × 100% ≈ -38.1%

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Solve for w. -22w-5)+5w-5(w+4) Simplify your answer as much as possible.​
Anna [14]

Answer: −22w−25

Step-by-step explanation: Distribute:

=−22w+−5+5w+(−5)(w)+(−5)(4)

=−22w+−5+5w+−5w+−20

Combine Like Terms:

=−22w+−5+5w+−5w+−20

=(−22w+5w+−5w)+(−5+−20)

=−22w+−25

8 0
3 years ago
Tanya and three friends have saved $75 to help protect the pandas. If they each gave the same amount, how much did each person c
Ber [7]

Answer:

Step-by-step explanation:

If it is Tanya and 3 friends, there are 4 people in total. If they all contributed the saem amount, you would do 75/4= 18.75 dollars each

8 0
3 years ago
2x+4y=1 3x-5y=7<br><br> Find the value of x and y<br><br> Thank you
Rashid [163]

Answer:


2x+4y=13x-5y=7

Too Many Equal Signs



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   2x+4y=13x-5y=7


Program Execution Terminated


 

Tiger was not able to solve for your input:2x+4y=13x-5y=7

Submit your own solution!Step-by-step explanation:


8 0
2 years ago
A ramp is 35 ft long rises to a platform. The bottom is 15 ft from the foot of the ramp. Find x, the angle of elevation of the r
sineoko [7]

Answer:

The angle of elevation of the ramp is 64.60°

Step-by-step explanation:

Given;

length of the ramp, L = 35 ft

distance of the platform to the foot of the ramp, d = 15 ft

The length of the ramp forms the hypotenuse side of this right angled triangle;

The angle of elevation of the ramp is in angle between the hypotenuse and adjacent side of the triangle.

Cos x =  adjacent / hypotenuse

Cos x = 15 / 35

Cos x = 0.4286

x = Cos⁻¹ (0.4286)

x = 64.62

x = 64.60°

Therefore, the angle of elevation of the ramp is 64.60°

4 0
3 years ago
PLEASE HELP ME NOW!!
timama [110]

Answer:

Twice a number increased by five - 2x + 5

Five decreased by twice a number- 5 - 2x

Twice the difference of a number and five- 2(x - 5)

Twice the sum of a number and five= 2(x + 5)

Five subtracted from twice a number= 2x - 5

Twice a number, less five= 2x - 5

6 0
2 years ago
Read 2 more answers
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