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Korvikt [17]
2 years ago
10

14) The height, h metres, of a ball projected directly upwards from the ground can be modelled by h = 56t - 71, where t is the t

ime in seconds after it leaves the ground. a) Find the height of the ball 3.5 seconds after it leaves the ground. b) At what time will the ball strike the ground again? c) When will the ball be 49 m above the ground? Briefly explain why there are two possible answers.​
Mathematics
1 answer:
Agata [3.3K]2 years ago
6 0
Okay the height would be nice if it would have to come
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How would a one-fifth in numbers be?​
Crazy boy [7]
It’s in many different forms:20 or .20 or 20%
8 0
3 years ago
Two friends board an airliner just before departure time. There are only 11 seats left, 4 of which are aisle seats. How many way
Vadim26 [7]

Using the Fundamental Counting Theorem, it is found that:

The 2 people can arrange themselves in 40 ways.

<h3>What is the Fundamental Counting Theorem?</h3>

It is a theorem that states that if there are n things, each with n_1, n_2, \cdots, n_n ways to be done, each thing independent of the other, the number of ways they can be done is:

N = n_1 \times n_2 \times \cdots \times n_n

With one people in the aisle and one in the normal seats, the parameters are:

n1 = 4, n2 = 7

With both in the aisle, the parameters is:

n1 = 4, n2 = 3

Hence the number of ways is:

N = 4 x 7 + 4 x 3 = 28 + 12 = 40.

More can be learned about the Fundamental Counting Theorem at brainly.com/question/24314866

#SPJ1

8 0
2 years ago
∠1 and ∠2 are complementary angles. m∠1 is 5y+32 and m∠2 is 7y-14. Find m∠2 &amp; show your work.
Ainat [17]
  • m<1+m<2=90

\\ \sf\longmapsto 5y+32+7y-14=90

\\ \sf\longmapsto 12y+18=90

\\ \sf\longmapsto 12y=72

\\ \sf\longmapsto y=6

  • m<2=7(6)-14=42-14=28[/tex]
7 0
3 years ago
Read 2 more answers
I will give u brainliest
Leto [7]

Answer:

45

Step-by-step explanation:

73+62=135

180-135=45

180 is the whole area of the triangle

4 0
3 years ago
John paints 2 portraits in 8 hours, 3 portraits in 12 hours, and 5 portraits in 20 hours. Which statement correctly describes th
nika2105 [10]
We can see that John paints at a constant rate: therefore, the correct statement that describes this situation is that John likes to paint.


Haha got you, the correct answer is John paints 1 portrait every 4 hours.
7 0
3 years ago
Read 2 more answers
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