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Evgen [1.6K]
3 years ago
13

5y + 3 = 4y - 9 what is y?

Mathematics
1 answer:
Elena L [17]3 years ago
6 0

y =  - 12

Step-by-step explanation:

5y - 4y =  - 9 - 3 \\ y =  - 12

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Let’s assume that human body temperatures are normally distributed with a mean of 98.20° F and a standard deviation of 0.62° F.
uysha [10]

Answer: It is such a small percentage of the population that would be considered to have fever at that level.

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Step-by-step explanation:

Since we have given that

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If  Bellevue Hospital in New York City uses 100.6°F as the lowest temperature considered to be a fever.

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So, using the normal distribution, we first find the value of z.

z=\dfrac{\bar{x}-\mu}{\sigma}\\\\x=\dfrac{100.6-98.2}{0.62}\\\\z=3.87

Since z = 3.87

So, p = 0.0001 =0.1%

So,It is such a small percentage of the population that would be considered to have fever at that level.

So, it is not appropriate stringent standard.

4 0
3 years ago
What is the value of x in the figure below? In this diagram, △ABD~△CAD.
morpeh [17]

<u>Given</u>:

Given that the triangles ABD and CAD are similar.

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The length of AC is 27.

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<u>Value of x:</u>

Let us use the leg rule to determine the value of x.

Thus, we have;

\frac{BC}{AB}=\frac{AB}{BD}

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Cross multiplying, we get;

27x=12\times 12

27x=144

Dividing both sides by 27, we have;

x=\frac{16}{3}

Thus, the value of x is \frac{16}{3}

Hence, Option D is the correct answer.

7 0
3 years ago
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Answer:

Step-by-step explaA bag of marbles contains only purple and yellow marbles. The bag has three times as many yellow marbles as purple. The bag contains 164 total marbles. Write an equation or system of equations to find out how many of each color of marble is in the bag. Define your variable(s) and expressions. Show how you checked your answer.

2nation:

7 0
3 years ago
Show me the work to this problem 4 1/8 + 2 3/5
Nonamiya [84]

Answer:

6 29/40

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3 0
3 years ago
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