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makvit [3.9K]
3 years ago
11

Help please anyone. ty​

Mathematics
2 answers:
diamong [38]3 years ago
7 0

Answer:

b

Step-by-step explanation:

kaheart [24]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Image might help

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Please give a good explanation and show your work as well
Vadim26 [7]

Answer:

A) down

B) x intercept (5, 0)

   y intercept (0, 80)

C) 144 ft

Step-by-step explanation:

y = Ax² + Bx + C

y = -16x² + 64x + 80

A)

Parabola opens down because A is negative

B)

x intercept (5, 0)

x = (-64 ±√(64² - 4(-16)(80))) / (2(-16))

x = -1  which means if the profile is continuous, the balloon launched one hour ago.

or

x = 5 which means the balloon will be on the ground in 5 hours.

(assuming level ground or no wind at all.

y intercept

y = -16(0)² + 64(0) + 80

y = 80 ft

meaning the balloon is already 80 feet above the ground when we start looking at t = 0

C)

Maximum altitude will occur when the vertical velocity is zero. Velocity is the derivative of position.

x' = -32x + 64

0 = -32x + 64

32x = 64

x = 2 hrs

y = -16(2)² + 64(2) + 80

y = 144 ft

4 0
3 years ago
Help plz help plz fast​
Alex

Answer:

fast doesn't need help you do

Step-by-step explanation:

5 0
3 years ago
You borrowed 59,000 for 2 years at 11% which was compounded annually what total will you pay back
mariarad [96]
Year one, 59,000 + 11% = 65,490
Year two, 65,490 + 11% = 72,693.90
6 0
3 years ago
Sneakers that cost $48.99 go on sale for 25% off.
Pepsi [2]

Answer:

A. 36.74 B. 38.94

Step-by-step explanation:

48.99×0.25=12.55 48.99-12.25=36.74×.06=2.20 36.74+2.20=38.94

6 0
3 years ago
Kevin is 4 times as old as Daniel and is also 6 years older than Daniel.<br> How old is Daniel?
Mars2501 [29]
If Kevin is 6 years older than Daniel, but also 4 times as old a him, just divide 6 by 4. Your answer is going to be that Daniel is 1 and a half years old
3 0
3 years ago
Read 2 more answers
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