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SVETLANKA909090 [29]
3 years ago
15

Solve the equation for x. 3/10x-1/5=-2

Mathematics
1 answer:
Ray Of Light [21]3 years ago
4 0
3/10x-1/5=-2

First we Add 1/5 to both sides

1/5+-2=-1.8

So our problem now becomes

3/10x1.8=-2
Now we have to divide both sides by 3/10

3/10/-2=-0.15


x=-0.15
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Find an ordered pair for x and y
Yuliya22 [10]

Answer: here are a few ordered pairs

1. (0,-4)

2.(8,0)

3.(16,4)

7 0
3 years ago
A sample of blood pressure measurements is taken for a group of​ adults, and those values​ (mm Hg) are listed below. The values
nika2105 [10]

Answer:

For systolic pressure data:

\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085

For diastolic pressure data:

\bar X =73.5\\\\S=12.54\\\\CV=\frac{73.5}{12.54}=0.17061

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

Step-by-step explanation:

The coefficient of variation is defined as the percentage relative variation of a set of data with respect to its average. And it is calculated like this:

CV=\frac{\bar X}{S}

S =\sqrt{\frac{1}{n-1} \sum_{i=1}^n (x_i-\bar{x})^2

\bar X={\frac{1}{n} \sum_{i=1}^n x_i

For systolic pressure data:

\bar X =127.2\\\\S=17.91668\\\\CV=\frac{17.91668}{127.2}=0.14085

For diastolic pressure data:

\bar X =73.5\\\\S=12.54\\\\CV=\frac{12.54}{73.5}=0.17061

It is observed that the systolic pressure shows greater standard deviation but less coefficient of variation. This is due to the greater magnitude of its measurement scale.

Systolic pressure is slightly less variable, among individuals in the sample, than diastolic pressure.

7 0
3 years ago
The length of a rectangle is 13 feet. The width is 9 feet. What is the perimeter of the rectangle?
KatRina [158]
13 + 13 + 9 + 9 = 44 feet.
Please make this answer the brainliest!
7 0
4 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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So, first we will find the derivative of the function. The derivative is:

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Now, we are going to make the derivative equal zero and find the answers of the equation.

3x^2 +6x-72=0\\3(x^2 +2x-24)=0\\3(x+6)(x-4)=0\\

So we have that the critical points are the answers to this equation:

x+6= 0 \\x= - 6

and

x-4=0\\x=4

Thus, the critical points are x=-6 and x=4

8 0
3 years ago
Joe deposit $4000 into an account that pays simple interest to rate of 2% per year how much interest would be paid in the first
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Answer is $240.00 because 2% of $4000 is 80. Multiply 80 by 3 years and you get $240.00
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