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Mamont248 [21]
3 years ago
15

A ball is thrown straight up from the top of a tower that is 280 ft high with an initial velocity of 48 ft/s. The height of the

object can be modeled by the equation s ( t ) = -16 t2 + 48 t + 280. Determine the time(s) the ball is lower than the building. Express your answer in interval notation. In two or more sentences, describe your solution method.

Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

ATTACHED is the written out response.  

let me know if you need anymore help

brainliest is always appreciated

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The price of a television in a certain store was a dollars in June. On the first day of each month after June, the price was red
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Answer:

0.8

Step-by-step explanation:

multiply 1.00 .20 4 times

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Which of these systems of linear equations has no solution? A. 2 x + 8 y = 15. 4 x + 16 y = 30. 2 x minus B. y = 18. 4 x + 2 y =
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Answer:

D. 4 x minus 3 y = 16. 8 x minus 6 y = 34

Step-by-step explanation:

A. 2 x + 8 y = 15. 4 x + 16 y = 30.

Multiply the first equation by 2

4x+16y = 30  This is identical to the second equation so there are infinite solutions

B. 2 x - y = 18. 4 x + 2 y = 38.

Multiply the first equation by 2

4x -2y = 36.  Add to the second equation  8x = 74  so there is one solution

C. 4 x + 7 y = 17. 8 x minus 14 y = 36.

Multiply the first equation by 2

8x +14y = 34  Add this to the second equation  16x = 70   There is one solution

D. 4 x minus 3 y = 16. 8 x minus 6 y = 34.

Multiply the first equation by 2

8x - 6y = 32  Subtract this from the second equation 8x - 6y = 34

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This is never true so there is no solution

7 0
3 years ago
There are 572 students in a mixed school. 5 of them are boys. How many girls are 11 there?​
Mamont248 [21]

Answer:

I'm not sure if your question was to find the number of girls, but if it was, here's the answer

Step-by-step explanation:

Total number of students= 572

number of boys= 5

So, number of girls= 572-5 =567 (ans)

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If the cost of a pound of nails increased from $2.29 to $2.48. what is the percent of the increase to the whole number percent?
masya89 [10]
100.8 percent

hope it helps
7 0
3 years ago
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