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2 years ago

What is the average rate of change? A. 4B. 2/5C. 1D. 2

Mathematics

1 answer:

nlexa [21]2 years ago

3 0

Answer:

C) 1

Step-by-step explanation:

The average rate of change remains constant among the 3 given points as $\frac{5-4}{2-1}=1$ and $\frac{10-5}{7-2}=1$ , so your answer is C

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Solve x^2+2x+7=0 using the quadratic formula.

Aneli [31]

Answer:

$x=-1\pm \sqrt{6}i$

Step-by-step explanation:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$x=\frac{-(2)\pm\sqrt{2^2-4(1)(7)}}{2(1)}$

$x=\frac{-2\pm\sqrt{4-28}}{2}$

$x=\frac{-2\pm\sqrt{-24}}{2}$

$x=\frac{-2\pm\sqrt{-1*24}}{2}$

$x=\frac{-2\pm\sqrt{-1}\sqrt{24}}{2}$

$x=\frac{-2\pm i\sqrt{4*6}}{2}$

$x=\frac{-2\pm i\sqrt{4}\sqrt{6}}{2}$

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3 years ago

Work out the surface area of this solid prism.

alexandr1967 [171]

Answer:

2520cm²

Step-by-step explanation:

Surface area = sum of the area of all the bases.

Area of bottom base = 28 * 30 = 840

Area of right base = 25 * 30 = 750

Area of left base = 17 * 30 = 510

Area of two triangles = ( 15 * 28 ) / 2 = 210 * 2 = 420

Then add all the areas together to find surface area

Surface area = 840 + 750 + 510 + 420 = 2520cm²

Relevant Formulas:

Area of a rectangle = length * width. This formula was used to find the area of the bottom base, the right base and the left base

Area of a triangle = ( height * base length ) / 2 . This formula was used to find the area of the sides which are triangles.

5 0

3 years ago

What is the surface area of the solid that this net can form?

NNADVOKAT [17]

Answer:

See Explanation

Step-by-step explanation:

I can't see the shape

4 0

3 years ago

Read 2 more answers

1. The description "Y is 4 more than the opposite of X" is represented by

Vladimir [108]

I believe it is y= -x + 4

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3 years ago

How to write numbers in standard form?

Rama09 [41]

Standard form is just another way of saying "how to write a number in a regular form".

Ex. Standard form is any number.

4
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3 years ago

What is the average rate of change? A. 4B. 2/5C. 1D. 2​

What is the average rate of change? A. 4B. 2/5C. 1D. 2