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OLEGan [10]
2 years ago
12

A ball is thrown from an initial height of

Mathematics
1 answer:
Eduardwww [97]2 years ago
8 0

Answer:

Step-by-step explanation:

If we are looking for the times that the ball was 11 meters off the ground, we sub in 11 for the height on the left and solve for t:

11=-5t^2+30t+1 and

0=-5t^2+30t-10 and factor this however it is you are factoring in class to solve for t to get

t = .35 seconds and t = 5.6 seconds

Because the ball reaches this point in its way up and then passes it again on its way down, the ball will have 2 times at this height.

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find the area of each sector. Use the 3.14 as the value of pi. Round your answer to the nearest tenth.​ Part 4
Yuri [45]

Answer:

1) 378.1 in²

2) 8.4 m²

Step-by-step explanation:

Area of sector= \frac{θ°}{360°}  \times \pi {r}^{2}

1) Area of sector

=  \frac{150°}{360°} \times 3.14 \times  {17}^{2}  \\  = 378.1 \: in^{2}  \\ (nearest \: tenth)

2) Area of sector

\frac{60°}{360°}  \times 3.14 \times  {4}^{2}  \\  = 8.4 \: m^{2}  \\ (nearest \: tenth)

7 0
2 years ago
One hundred times the quantity five plus three
Maru [420]
Five-5

three-3

"the quantity five plus three" (5 + 3) 

"one hundred times the quantity ..." means  100 (5 + 3)   

now just solve 100(5+3) 

solve the parentheses first (5+3) = 8

Now you are left with 100(8) or 100*8

when you solve your answer is 800
3 0
2 years ago
Consider the polynomial function (x+3)(x+9)(x-8)=0. which of the following are zeros of the function? Select all that apply. -9
Crank
Zeros are:

-3
-9
+8

Looks like only -3 and -9 are offered as answers, though.
6 0
3 years ago
Which of the following pertains to the entire group being considered ina study​
exis [7]

Answer: Population

In statistics, a population is the entire group of people you want to determine some fact about (eg: average height). A sample is a subset of the population that should ideally represent the population.

8 0
3 years ago
Determine the unknown angles in the diagram above. Please help!
Nana76 [90]

A

a and 143 are supplementary. So a + 143 = 180

a + 143 = 180              Subtract 143 from both sides.

a = 180 - 143

a = 37

B

b and 143 are vertically opposite angles and are equal

b = 143 degrees.

C

Interior angles on the same side of a transversal for parallel lines are supplementary

b + c = 180

143 + c = 180

c = 37

D

c + d + 85 = 180 degrees

37 + d + 85 = 180

d + 122 = 180

d = 180 - 122

d = 58

E

e = c They are vertically opposite.

e =37

F

All triangles have 180 degrees.

e + f + 90 = 180 degrees.

37 + f + 90 = 180

f  +  127 = 180

f = 180 - 127

f = 53

G

G and 48 are opposite 2 equal sides. So G and 48 are equal

G = 48

H

h + 48 + 48 = 180

h + 96 = 180

h = 84

K

K and H are supplementary

K + H = 180

k + 84 = 180

k = 95

M

m+ k + d  = 180

M + 95 +  58 = 180

M + 143 = 180

M = 37

P

the top angle is 2*m and 2m is bisected. You are using the m on the left.

P + 85 + M = 180

P + 85 + 37 = 180

P + 122 = 180

p = 180 - 122

p = 58

R

r + p are supplementary.

r + p = 180

r + 58 = 180

r = 180 - 58

r = 122

S

s + r + c + b = 360  All quadrilaterals have 360 degrees.

s + 122 + 37 + 143 = 360

s + 302= 360

s = 360 - 302

s = 58

6 0
3 years ago
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