True or False

Mathematics

1 answer:

kipiarov [429]3 years ago

3 0

Answer:

True

Step-by-step explanation:

Plug in the point:

-2-(-1)=-2+1=-1<0.

This is a true statement

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Find an ordered pair (x,y) that is a solution to the equation. 3x-y=8

allochka39001 [22]

Answer:

(2,-2)

Step-by-step explanation:

$3x-y =3(2) -(-2)= 6 +2 = 8$

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3 years ago

Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial: 15ab-9a^

MrMuchimi

Answer:

$- \bigg(3a - \frac{5}{2} b) \bigg)^{2}$

Step-by-step explanation:

$15ab-9a^2-6 \frac{1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{6 \times 4 + 1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{24+ 1}{4} b^2 \\ \\ = 15ab-(3a)^2-\frac{25}{4} b^2 \\ \\ = 15ab- (3a)^2- \bigg(\frac{5}{2} b \bigg)^2 \\ \\ = - \{ - 15ab + (3a)^2 + \bigg(\frac{5}{2} b \bigg)^2 \} \\ \\ = - \{ (3a)^2 + \bigg(\frac{5}{2} b \bigg)^2 - 15ab \} \\ \\ = - \bigg(3a - \frac{5}{2} b \bigg)^{2}$

3 0

2 years ago

a circle has an area of 225 square inches. if the radius of the circle is multiples by 6, then what is the new area of the circl

Lesechka [4]

Answer:

D: 8,100π in²

Step-by-step explanation:

The formula for area of a circle is

A = πr²

The radius is squared, so if the radius or a new circle is 6 times larger (multiplied by 6), the difference in area will be 36 times greater. So the area is

225π(36) = 8,100π

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3 years ago

Unit 3 homework 2 geometry

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Where is the question?

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2 years ago

Find the value of x in 4:x::x:16

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Given:

4:x::x:16