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mel-nik [20]
3 years ago
7

Which statement is true about the parentheses in this expression? [24 − (15 + 2) + 3] − 9

Mathematics
1 answer:
marin [14]3 years ago
8 0

Answer: 0

Step-by-step explanation:

[24 - (15 + 2) +3] -9

[24-(17) +3] -9

[7 +3] -9

9 - 9 = 0

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Which of the following equations is an example of inverse variation between
AURORKA [14]

Answer:

B

Step-by-step explanation:

Any inversely proportional equation is of the form y=k/x.

5 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
A submarine starts at the surface of the water and travels to the bottom, a depth of 4000 feet. Graph A shows its distance from
denpristay [2]

Answer:

On Graph B, at 0 hours, the graph will be at 0 feet.

Then, the graph will increase until 1 hour, when the submarine reaches its deepest point.

At 1 hour, the height of Graph B will be 4000 feet.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Hey I need some help!! Does anyone mind giving me the answers and explain how? I really don’t understand. PS the question is in
Ksenya-84 [330]

Answer:

2x2x2x5

Step-by-step explanation:

2x2x2x5 equals 40

6 0
3 years ago
How do you round up fractions?
qaws [65]

Answer:

If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.  If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.

hope it helps

7 0
3 years ago
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