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elena55 [62]
3 years ago
10

Serena hits a tennis ball downward from the top of the net at which the angle of

Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer:

2.5 meter

Step-by-step explanation:

in a right triangle, tan of an angle  = opposite side /adjacent side

tan 70° = x/ 0.9 , multiply both sides by 0.9

0.9 * tan 70° = x, solve on a calculator

x ≈ 2.5 m

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Liula [17]

Answer:

f(1)=4

f(-3)=4

f(5)=-2

f(0)=2

f(-1)=0

f(3)=2

Step-by-step explanation:

Pose f(x) as your x value. Now apply to the graph

5 0
3 years ago
How many times does 9 go into 67
OlgaM077 [116]
9 goes into 67, 7 times, with a remainder of 4. So we would get 7 \frac{4}{9}
5 0
3 years ago
Read 2 more answers
Use the given function and the given interval to complete parts a and b. f (x )f(x)equals=negative 2 x cubed plus 21 x squared m
Leya [2.2K]

Answer:

(A)The absolute maximum of f(x) is at x=5

Step-by-step explanation:

F(x)=−2x³+21x²−60x on [1,6]

Find the first derivative.

f'(x)=-6x²+42x-60

Set the first derivative equal to zero.

-6x²+42x-60=0

Solve to find the critical points.

x=2,5

Next, we use the endpoints and all critical points on the interval to test for any absolute extrema over the given interval.

x=1,2,5,6

This is done by evaluating the function at x=1,2,5,6.

F(1)=−2(1)³+21(1)²−60(1)=-41

F(2)=−2(2)³+21(2)²−60(2)=-52

F(5)=−2(5)³+21(5)²−60(5)=-25

F(6)=−2(6)³+21(6)²−60(6)=-36

The maximum will occur at the highest f(x) value and the minimum will occur at the lowest f(x) value.

Absolute Maximum: (5,-25)

Absolute Minimum: (2,-52)

The graph is attached.

The absolute minimum and maximum of f(x) are (2,-52) and (5,-25) respectively.

3 0
3 years ago
Identiffy the degree of the polynomail 8x3y2 - 10x + 4x2y2+3
Karo-lina-s [1.5K]
8x^3y^2-10xy+4x^2y^2+3
If this is what you mean then the degree of the polynomial would be 3 since 3 is the highest exponent of all the terms.
7 0
3 years ago
Any help would be great
Aloiza [94]

Answer:

3/4

Step-by-step explanation:

A ratio of the diameters is one diameter divided by the other so the miniDVD divided by the DVD = 9/12 or 3/4.

8 0
3 years ago
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