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Blababa [14]
3 years ago
13

A golf ball is struck by a​ 60-degree golf club at an initial velocity of 9898 feet per second. The height of the golf ball in f

eet is given by the quadratic function h left parenthesis x right parenthesis equals negative StartFraction 16 x squared Over left parenthesis 49 right parenthesis squared EndFraction plus StartFraction 84.9 Over 49 EndFraction xh(x)=− 16x2 (49)2+ 84.9 49x​, where x is the horizontal distance of the golf ball from the point of impact. What is the horizontal distance of the golf ball from the point of impact when the ball is at its maximum​ height? What is the maximum height obtained by the golf​ ball?

Mathematics
1 answer:
kupik [55]3 years ago
7 0
Hello,
Please, see the attached file.
Thanks.

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Which is the decimal equivalent of 2/3<br><br> A. 0.23<br> OB. 0.32<br> O c. 0.3<br> O<br> D. 0.6
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3 years ago
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Find a ⋅ b. a = 4i - 4j, b = 4i + 5j
svetoff [14.1K]

Answer:

value of a.b = -4

Step-by-step explanation:

We need to find a.b

a= 4i-4j

b = 4i+5j

We know that i.i =1, j.j=1, i.j =0 and j.i=0

a.b = (4i-4j).(4i+5j)

a.b = 4i(4i+5j)-4j(4i+5j)

a.b = 16i.i +20i.j-16j.i-20j.j

a.b = 16(1) +20(0)-16(0)-20(1)

a.b = 16 +0-0-20

a.b = 16-20

a.b =-4

So, value of a.b = -4

7 0
3 years ago
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I need help
ankoles [38]
Your answer would be y + 9 = m(x + 6)
6 0
3 years ago
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has d
Alinara [238K]

Answer:

Read step by step explanation

Step-by-step explanation:

The owner already knows that the limit for the average time delivered pizzas is 38 minutes. So we conclude

1.-The resulting mean from sample data ( x ) ( 27 customers) need to be smaller than 38 minutes, any value of sample above 38 minutes means more time for the delivery action and will indicate a failure for the future project

2.-As sample size is smaller than 30 the test has to be  t-student one tail test to the left

Test hypothesis

Null hypothesis                       H₀                  x  = 38

Alternative hypothesis           Hₐ                  x  <  38

We should test at a significance level α  = 0,05       (α = 5%)

If the result of the test is to accept  H₀  delivery project won´t be implemented, if on the other hand, H₀ is rejected then in the condition of the alternative hypothesis we accept Hₐ the sample indicates that we have a smaller average time than 38 minutes.

4 0
2 years ago
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