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Ugo [173]
3 years ago
10

Football The function defined by h = -5t² + 20t + 2 indicates the approximate height h of a soccer ball. in meters according to

the elapsed time t in seconds, since it was launched. This ball hit the ground before a receiver managed to approach it. How much time has the balloon spent in the air, to the nearest tenth of a second! For how many seconds was he at a height of at least 17 m?
Mathematics
1 answer:
timama [110]3 years ago
4 0
3 seconds for the second question

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Solve the missing side. Find the missing side. Round to the nearest tenth. Please show the work. Part 2. #5-8​
enyata [817]

Answer:

5. 6.1 units

6. 29.4 units

7. 12.8 units

8. 29.1 units

Step-by-step explanation:

5. We have the opposite and adjacent sides here for angle 21 degrees. So we need to use tangent, which is opposite / adjacent:

tan(21)=x/16

x=16*tan(21) ≈ 6.1 units

6. We have the opposite and hypotenuse sides here for angle 33 degrees. So we need to use sine, which is opposite / hypotenuse:

sin(33)=16/x

x=16/sin(33) ≈ 29.4 units

7. We have the opposite and adjacent sides here for angle 37 degrees. So we need to use tangent, which is opposite / adjacent:

tan(37)=x/17

x=17*tan(37) ≈ 12.8 units

8. We have the opposite and hypotenuse sides here for angle 31 degrees. So we need to use sine, which is opposite / hypotenuse:

sin(31)=15/x

x=15/sin(31) ≈ 29.1 units

Hope this helps!

4 0
3 years ago
Read 2 more answers
Polynomial of degree 3 with three distinct real zeros and a positive leading coefficient
horsena [70]
Conjugate. i hoped that helped
7 0
3 years ago
a plumber charges $80 an hour for making house calls to do plumbingwork.He works between 2 to 6 hours a day.​What is the domain
Zanzabum

Answer:

The domain is (x :  2 < x < 6}

The range is {y : 160 < y < 480}

Step-by-step explanation:

Assume that y is the total charge for x hours

∵ He charges $80 an hour

∵ The number of hours is x

∴ y = 80 x

x is the domain and y is the range

∵ He works between 2 to 6 hours a day

- That means x is between 2 and 6

∴ 2 < x < 6

∵ x represents the domain

∴ The domain is {x : 2 < x < 6}

Lets find the value of y at x = 2 and x = 6 to find the range

∵ x = 2

∴ y = 80(2)

∴ y = 160

∵ x = 6

∴ y = 80(6)

∴ y = 480

- That means y is between 160 and 480

∴ 160 < y < 480

∵ y represents the range

∴ The range is {y : 160 < y < 480}

3 0
3 years ago
The florist makes the greatest number of identical arrangements with the carnations and asters. She has 72 carnations and 42 ast
Studentka2010 [4]

the answer is B. Hope this helps

7 0
3 years ago
How is pie an irrational number ?
lakkis [162]

Answer:PIE IS IRRATIONAL BECAUSE IT IS THE RATIO OF LENGTH OF CIRCUMFERENCE TO LENGTH OF DIAMETER OF CIRCLE. HENCE IT IS NEVER IN THE FORM OF INTEGER UPON INTEGER SO THIS RATIO OF LENGTH OF CIRCUMFERENCE TO LENGTH OF DIAMETER THAT IS PIE IS NOT RATIONAL SO IT IS IRRATIONAL.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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