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Licemer1 [7]
2 years ago
13

Can someone please help pleaseeee!!!

Mathematics
1 answer:
olasank [31]2 years ago
5 0
The sum is y(4y − 1) + <span>(y + 5)2 = 4y² -y +y² +25 - 10y = 5y²-11y + 25 
the answer is </span><span>5y2 − 11y + 25

</span>
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Emily's family loves to work together in the garden. They have a slight preference for flowers, as 60% percent of their plants a
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20 because 100 plants would have 60 flowers and 40 vegetables so 50% which is half would be 30 flowers and 20 vegetables
4 0
3 years ago
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URGENT!!!!!!!!
LuckyWell [14K]

Answer:

x+y=24 so we can say

x=24-y making 3x+5y=100 become

3(24-y)+5y=100

72-3y+5y=100

72+2y=100

2y=28

y=14, since x=24-y

x=10

So there are 10 3-point questions and 14 5-point questions.

MARK ME AS BRAINLIST PLZ I REALLY NEED IT

6 0
2 years ago
The employees of a firm that manufactures insulation are being tested for indications of asbestos in their lungs. The firm is re
balandron [24]

Answer:

0.013 = 1.3% probability that fifteen employees must be tested in order to find three positives.

Step-by-step explanation:

For each employee, there are only two possible outcomes. Either they test positive, or they do not. The probability of an employee testing positive is independent of any other employee, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

40% of the employees have positive indications of asbestos in their lungs

This means that p = 0.4

Find the probability that fifteen employees must be tested in order to find three positives.

2 during the first 14(given by P(X = 2) when n = 14).

The 15th is positive, with 0.4 probability. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{14,2}.(0.4)^{2}.(0.6)^{12} = 0.0317

0.0317*0.4 = 0.013.

0.013 = 1.3% probability that fifteen employees must be tested in order to find three positives.

7 0
2 years ago
Suppose Q is the midpoint of line segment PR, PQ = x + 10, and QR = 4x - 2
xz_007 [3.2K]

answer and step by step in the attachment

5 0
3 years ago
Read 2 more answers
Kerel is creating a rectangular dog run in his backyard. The length of the dog run is
Hunter-Best [27]

The width of the dug run is 73.5 ≤ w ≤ 237

<h3>What is a compound inequality?</h3>

A compound inequality is an inequality formed by combining two simple inequalities.

Analysis:

Let the width of dug run be w

perimeter = 2(67 + w) = 134 + 2w

   281 ≤ 134 + 2w

     147 ≤ 2w

     73.5 ≤ w

 Also, 134 + 2w ≤ 608

        2w ≤ 474, w ≤237

In conclusion, the range of values of the width of the dug run is 73.5≤w≤237

Learn more about compound inequality: brainly.com/question/1604153

#SPJ1

3 0
2 years ago
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