3 years ago

Simplify. Assume all variables are non-zero. HELP PLEASE!!

Mathematics

1 answer:

Trava [24]3 years ago

5 0

It's the third one okay

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Bettina spent $75 on 5 shirts that each cost the same price. three of the shirts were red. which expression represents the total

andrezito [222]

The answer is C. 75/5 × 1/3

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3 years ago

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What is the radius of a circle whose equation is x2 + y2 + 8x – 6y + 21 = 0?

s344n2d4d5 [400]

Answer:

2 units

Step-by-step explanation:

The given equation of the circle is:

$x^{2} + y^{2}+8x-6y+21=0$

The general equation of the circle is:

$x^{2} + y^{2}+2gx+2fy+c=0$

Comparing the given equation with the general equation we can say:

g = 4

f = -3

c = 21

The formula for radius of the circle is:

$radius=\sqrt{g^{2} +f^{2} -c }$

Using these values of the given circle, we get:

$radius=\sqrt{(4)^{2}+(-3)^{2}-21}\\\\radius=\sqrt{4}\\\\radius=2$

Therefore, the length of radius of the given circle is 2.

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3 years ago

Andy's weight is 5 kilograms less than twice his brother's. Together they weigh 100 kilograms. What are their weights?

lakkis [162]

Answer:

Step-by-step explanation:

Let x be the brother's weight.

Then 2x-5 is Andy's weight.

x+(2x-5)=100

3x-5=100

3x=105

4 0

3 years ago

Which of the following is a common denominator of 1/4 and 5/6? Answers:

kondaur [170]

Answer:

C, 12

Step-by-step explanation:

least common multiple of 4 and 6 is:

prime factorization of 4: 2*2

prime factorization of 6: 3*2

common factors: 2, so you should only multiply one of the common 2s when multiplying the factors to get the least common multiple

2*2*3=12

12 is a common denominator of 1/4 and 5/6

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2 years ago

PLEASE HELP ME ASAP???!!!!!!!!

Ivenika [448]

Answer:

I'm very very sorry I cannot help you I wish I could help sorry bud.

8 0

3 years ago