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3 years ago

Find thе аvеrаgе оf –25, —70, 15, -31, -25, and 40

Mathematics

2 answers:

Anna35 [415]3 years ago

6 0

Answer:

-16

Step-by-step explanation:

Average = sum/n

Sum = -96

Average = -96/6

= -16

egoroff_w [7]3 years ago

3 0

Answer:

-16

Step-by-step explanation:

To find the average, we add up all the numbers and divide by how many numbers there are

(–25+—70+ 15+ -31+ -25+ 40)/6

-96/6

=-16

The average is -16

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Find the supplement of 29°

Nonamiya [84]

Answer:

151°

Step-by-step explanation:

Supplementary angles equal 180°, so all you have to do here is subtract 29 from 180 to get 151° as the supplement.

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3 years ago

What is |3| - 7...............

Ad libitum [116K]

The absolute value of 3 =3
So 3-7= -4

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3 years ago

How do you find a percent from a decimal?

Alenkinab [10]

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3 years ago

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The sum of the heights of a giraffe and a baby giraffe is 15m. If the baby giraffe has a height which is 2/3 that of the giraffe

EleoNora [17]

mama giraffe: x

baby giraffe: $\frac{2}{3} x$

$x + \frac{2}{3}x$ = 15

$(3)x + (3)\frac{2}{3}x$ = (3)15

3x + 2x = 45

5x = 45

x = 9

baby giraffe: $\frac{2}{3} x$ = $\frac{2}{3}(9)$ = 2(3) = 6

Answer: 6 m

8 0

3 years ago

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What are the roots of the polynomial equation x cubed minus 5 x + 5 = 2 x squared minus 5?

Dennis_Churaev [7]

Roots of the polynomial $x^3-5x+5=2x^2-5$ are $x=\sqrt{5},x=-\sqrt{5}\,\,and\,\,x=2$

Step-by-step explanation:

We need to find roots of the polynomial equation: $x^3-5x+5=2x^2-5$

Solving the polynomial to find roots:

$x^3-5x+5=2x^2-5\\Rearranging:\\x^3-5x+5-2x^2+5=0\\x^3-2x^2-5x+10=0$

Finding factors by grouping:

$(x^3-2x^2)(-5x+10)=0\\Finding\,\,common\,\,terms:\\x^2(x-2)-5(x-2)=0\\(x^2-5)(x-2)=0\\x^2-5=0\,\,and\,\,x-2=0\\x^2=5\,\,and\,\,x=2\\x=\pm \sqrt{5}\,\,and\,\,x=2$

So, roots of the polynomial $x^3-5x+5=2x^2-5$ are $x=\sqrt{5},x=-\sqrt{5}\,\,and\,\,x=2$

Keywords: Roots of Polynomial

Learn more about Roots of Polynomial at:

#learnwithBrainly

8 0

3 years ago