Subtract the polynomials. (5x^2 −3x − 2) − (−2x^2 − x + 10)

Mathematics

2 answers:

Eva8 [605]2 years ago

8 0

Answer:

7x^2−2x−12

Step-by-step explanation:

zhuklara [117]2 years ago

4 0

Let's simplify step-by-step.5x2−3x−2−(−2x2−x+10)Distribute the Negative Sign:=5x2−3x−2+−1(−2x2−x+10)=5x2+−3x+−2+−1(−2x2)+−1(−x)+(−1)(10)=5x2+−3x+−2+2x2+x+−10Combine Like Terms:=5x2+−3x+−2+2x2+x+−10=(5x2+2x2)+(−3x+x)+(−2+−10)=7x2+−2x+−12Answer:=7x2−2x−12

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vfiekz [6]

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2 years ago

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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:

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For diastolic pressure data:

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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:

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

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

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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.

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2 years ago

Need Answer Fast Please to solve the Linear Expression: 5(5n+2)+(3-2n)

tatyana61 [14]

Answer:

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Step-by-step explanation:

5(5n+2)+(3-2n)

Distribute

25n + 10 +3 -2n

Combine like terms