2 years ago

How to solve quadratic equations

Mathematics

1 answer:

eduard2 years ago

8 0

If we have two numbers A&B and we know that A times B=0 then it must follow that either A=0, or B=0 (or both)

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What is the sum of the exterior angles of a convex polygon?

Volgvan

Answer:

Step-by-step explanation:

The sum of the exterior angles for each polygon is always 360°.

The sum of the interior angles for each polygon is always 180°(n-2).

If you have n-sided convex polygon, then

$\left(\text{Sum of all interior angles}\right)+ \left(\text{ Sum of all exterior angles}\right)=180^{\circ}\cdot n$

So,

$\left(\text{Sum of all interior angles}\right)+ 180^{\circ}\cdot (n-2)=180^{\circ}\cdot n\\ \\\left(\text{Sum of all interior angles}\right)=180^{\circ}\cdot n-180^{\circ}\cdot (n-2)=180^{\circ}\cdot (n-n+2)=360^{\circ}$

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3 years ago

Given h(x) = -5x + 3, find h(5).

lyudmila [28]

5x+5=3
5x=-2
X=-2/5
Alternative form is x=-0.4

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3 years ago

What is the vertex of g(x) = 3x2 − 12x + 7? (−6, −5) (−2, −5) (2, −5) (6, −5)

34kurt

Answer:

(2, -5)

Step-by-step explanation:

Convert to vertex form:

3x^2 - 12x + 7

= 3(x^2 - 4x) + 7

Completing the square:

= 3[ (x - 2)^2 - 4)] + 7

= 3(x - 2)^2 - 12 + 7

= 3(x - 2)^2 - 5.

Comparing with the general form

a(x - b)^2 + c we see that the vertex is (b, c) = (2, -5).

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2 years ago

“the product of a number and 3 is the same as the sum of that number and sione half of a number is 8 less than the number itself

3241004551 [841]

Answer:

USE GOOGLE BEFORE COMING HERE

Step-by-step explanation:

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3 years ago

A psychology professor at a university is interested in determining the proportion of undergraduate students at her university w

mario62 [17]

Answer:

No, because the professor’s question had 3 possible answers

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3 years ago