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3 years ago

The height of a ball kicked into the air from

Mathematics

1 answer:

aniked [119]3 years ago

6 0

Answer:

Quadratic equation ax%5E2%2Bbx%2Bc=0 (in our case -16x%5E2%2B45x%2B-3+=+0) has the following solutons:

x%5B12%5D+=+%28b%2B-sqrt%28+b%5E2-4ac+%29%29%2F2%5Ca

Step-by-step explanation:

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Can you help and do it step by step

MrRa [10]

Answer:

$4800

Step-by-step explanation:

SI=PRT DIVIDED BY 100..

So it is going to be 400×2×6 divided by 100 which will be 4800

6 0

2 years ago

The family has crops growing on 15 acres of their farmland. At the beginning of the growing season, Jayleen and Wyatt ride a tra

belka [17]

Answer:

Step-by-step explanation:

Given:it takes them 1.5 hours to plant one acre.

So, in order to plant all 15 acres it would take

15/1.5 = 10 hours

3 0

3 years ago

If Karri takes a 7 question true false test and guess on every question, what is the

dusya [7]

Answer:

The probability that she gets all 7 questions correct is 0.0078.

Step-by-step explanation:

We are given that Karri takes a 7 question true-false test and guess on every question.

The above situation can be represented through binomial distribution;

$P(X = r) = \binom{n}{r} \times p^{r} \times (1-p)^{n-r} ; x = 0,1,2,3,........$

where, n = number of samples (trials) taken = 7 question

r = number of success = all 7 questions correct

p = probability of success which in our question is probability that

question is correct, i.e. p = 50%

Let X = Number of question that are correct

So, X ~ Binom(n = 7, p = 0.50)

Now, the probability that she gets all 7 questions correct is given by = P(X = 7)

P(X = 7) = $\binom{7}{7} \times 0.50^{7} \times (1-0.50)^{7-7}$

= $1 \times 0.50^{7} \times 0.50^{0}$

= 0.0078

6 0

3 years ago

Mhanifa please answer this question about lines

ratelena [41]

I think the answer is TR

3 0

2 years ago

What is the greatest number of planes determined by four collinear points

Sidana [21]

The greatest number of planes determined by four collinear points is ∞ , infinity

5 0

3 years ago