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professor190 [17]
3 years ago
10

Need help very confused nobody knows the answer smh

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
4 0

Answer:

A, 11.7

Step-by-step explanation:

B, No

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The mean of five numbers is 23. If four of the number are 19, 21, 24, 25, what id the fifth number?
IrinaK [193]
The 5th number is 26.

19 + 21 + 24 + 25 = 89.

23 x 5 = 115.

115 - 89 = 26.

hopefully this helps you





7 0
4 years ago
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What is the result of subtracting the second equation from the first?<br> -2x+y=0<br> 7x+3y=2
ikadub [295]

Answer:

5x -2y = -2

Step-by-step explanation:

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------------------

5x -2y = -2

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3 years ago
A rectangular field is 4 times as long as it is wide. If the length is decreased by 10 in. and the width is increased by 2in. th
Keith_Richards [23]
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5 0
3 years ago
A cannon launches a cannonball from a height of 3 feet with an upward velocity of 40 feet per second. The function h=-16t^2+40t+
gavmur [86]
A)  We want to know when h=10 so

10=-16t^2+40t+3

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Using the quadratic formula:

t=(40±√1152)/32 

t≈0.189 and 2.311 seconds

So it is at 10 ft twice, about 2/10 of a second when it is rising and at 2 3/10 of a second when it is falling...

b.

The maximum height of the ball is when velocity is equal to zero, or dh/dt=0

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So the maximum height of the ball occurs after 1.25 seconds and reaches a height of 28 feet.
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3 years ago
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