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Citrus2011 [14]
3 years ago
5

If an average grade of an English class rise from 70 to 85 what is the approximate percent increase

Mathematics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

21.4%

Step-by-step explanation:

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Use the percent. proportion to solve 40% of what is 30?
AleksAgata [21]

Answer:

i belive its 75 percent

Step-by-step explanation:

the question is worded strangly

3 0
3 years ago
You obtain a simple interest loan from National city for $2500 at 7.6% for 5 years. Find the amount of interest on the loan
nevsk [136]

Answer:

950

Step-by-step explanation:

2500(0.076)(5)  = 950

6 0
3 years ago
Maria's height while jumping on a a trampoline can be modeled by the equation h=-16t^2+18t+5. Where t=time in seconds and h=heig
Vadim26 [7]

Answer:

10.06 ft

Step-by-step explanation:

Maria's maximum height will occur when her velocity reaches zero (0). This means that she has stopped ascending and is about to begin descent.

The equation for the height reached by Maria on the trampoline is given as:

h=-16t^2+18t+5

To find her maximum height, we first have to find the time it will take her to get to that height and corresponding velocity (zero).

Her velocity can be found by differentiating her height i.e. dh/dt:

v = \frac{dh}{dt} = -32t + 18

Therefore, when v = 0:

0 = -32t+ 18\\\\=> 32t= 18\\\\t = 18 / 32 = 0.5625 secs

It takes her 0.5625 seconds to get to her maximum height.

Therefore, her height at that time (0.5625 seconds) is:

h=-16(0.5625)^2+18(0.5625)+5\\\\h = -16 * (0.3164) + 10.125+5\\\\h = -5.0624 + 15.125\\\\h = 10.06 ft

Therefore, her maximum height is 10.06 ft.

3 0
3 years ago
Solve the equation. Write a justification for each step. <br>5m-3=22
balu736 [363]

Answer:

m=5

Step-by-step explanation:

5m-3=22

  1. take 3 the other side by doing the opposite operation

5m= 22+3

5m= 25

  • then divide it by 5 on both sides to get the value of m.
  • 5m÷5=25÷5
  • 5and 5 cancels out and the answer becomes :

m=5

5 0
3 years ago
Read 2 more answers
Perform the indicated operation.<br> (5 - 2122
LUCKY_DIMON [66]

Answer:

5 - 2122 = -2,117

Step-by-step explanation:

When you're not sure how to add or subtract, you should probably just use a calculator.

-2,122 + 5 = -2,117

4 0
3 years ago
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