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AleksAgata [21]
3 years ago
15

Can someone pls help me

Mathematics
1 answer:
ipn [44]3 years ago
3 0
I think it 48 i’m not sure
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WILL MARK BRAINLYISTwhich shows the correct substitution of the values a b and c from the equation 0=-3x^2-2x+6
skad [1K]

Answer:

its a :)

Step-by-step explanation:


7 0
2 years ago
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John has a rectangular picture which is 43 inches long and 27 inches wide. He wants to build a wooden gram for the picture but s
Dvinal [7]

Answer:

The border will be 18.6 inches wide

Step-by-step explanation:

<em>Let the width be w</em>

<em>The length = 43 inches</em>

<em>Total wood = 800 square inches</em>

Formula for area of rectangle = length x width

<em>800 = 43 x w</em>

<em>w = 800/43</em>

w = 18.6 inches

Therefore, the border will be 18.6 inches wide.

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2 years ago
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So far, Charlie has driven 9.3 miles. He needs to drive a total of 29 miles. How many more miles must Charlie drive?
Harrizon [31]

Answer:

19.7 miles

Step-by-step explanation:

29-9.3=19.7

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2 years ago
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Evaluating an Expression<br> Evaluate (15 - 4x) + 5 when x = 3.
lukranit [14]

Answer:

8

Step-by-step explanation:

(15-4x)+5

(15-4(3))+5

(15-12)+5

3+5=8

7 0
2 years ago
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Suppose that the probability that a person will develop hypertension over a life time is 60%. Of 13 graduating students from the
Savatey [412]

Answer:

The mean number of the students who develop hypertension over a life time is 7.8.

Step-by-step explanation:

For each person, there are only two possible outcomes, either they will develop hypertension, or they will not. The probability of a person developing hypertension is independent of any other person, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

Suppose that the probability that a person will develop hypertension over a life time is 60%.

This means that p = 0.6

13 graduating students from the same college are selected at random.

This means that n = 13

Find the mean number of the students who develop hypertension over a life time

E(X) = np = 13*0.6 = 7.8

The mean number of the students who develop hypertension over a life time is 7.8.

5 0
2 years ago
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