Which of these expressions is equivalent to 3(5x − 2)?

Mathematics

2 answers:

Nuetrik [128]3 years ago

7 0

Answer:

3(5x - 2)

3(5x) - 3(2)

15x - 6

Lemur [1.5K]3 years ago

7 0

The expression that’s equivalent to 3(5x-2) is 15x - 6

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Explain how you got the answer

Gnoma [55]

Answer:

$\huge\boxed{Center = (3,3),Radius = 2\sqrt{15} }$

Step-by-step explanation:

Given equation is

$x^2 + y^2 -6x-6y -42 = 0$

Adding 42 to both sides

$x^2 + y^2 -6x-6y = 42\\$

Completing squares

$x^2 -6x+y^2 -6x = 42\\(x)^2 - 2(x)(3) +y^2 - 2(y)(3) = 42$

Adding (3)² => 9 and (3)² => 9 to both sides

$(x-3)^2+(y-3)^2 = 42+9+9\\(x-3)^2 + (y-3)^2 = 60\\(x-3)^2 (y-3)^2 = (2{\sqrt{15})^2}$

Comparing it with $(x-h)^2+(y-k)^2 = r^2$ where Center = (h,k) and Radius = r

We get:

Center = (3,3)

Radius = $2\sqrt{15}$

7 0

3 years ago

Tyson wrote this expression to describe the total amount of points he won in both rounds of a game.

Rainbow [258]

We know that Tyson wrote this expression to describe the total amount of points he won in both rounds of a game.

The expression is f+15. Let variable f represent points.

The correct answer is B. Tyson doesn't know how many points he earned in the first round. He knows he earned a total of 15 points in the whole game.

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3 years ago

What is the perimeter of the parallelogram? Please help! Will mark brainlyest.

Luba_88 [7]

Answer:

Step-by-step explanation:

B=base

A=side

X=2(a+b)=2·(13+16)=58

3 0

2 years ago

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