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4 years ago

Which point is Not on a circle with a center of (0,0) and a radius of 10?

2 answers:

6 0

It is A because the radius is 10 which means that if x=0 then y must equal 10. (0,5) would be inside of the circle. If this doesn't make sense graph the circle and the points and you'll see what I mean.

arlik [135]4 years ago

3 0

What is the general equation for a circle? There should be three unknowns, namely (a,b), the coordinates of the centre of the circle, and r the radius of the circle. You have three points on the circle, which should give you three equations. Solve the system, and you get a, b and r.

The second part is similar: what is the general expression for a quadratic function? Once again, there are three unknowns, use the three points to get a new system and solve.

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Which expressions are equivalent to 2^5x2^4? Check all that apply

KIM [24]

Answer:

Step-by-step explanation:

2^9

2^-2 * 2^11

(2*2*2*2*2)*(2*2*2*2)

8 0

3 years ago

Please answer ASAP! If 0 is an angle in quadrant II, what is the value of sin(0)

natka813 [3]

Answer:

Option A

Step-by-step explanation:

It's given that cosθ = $-\frac{2\sqrt{5} }{5}$

Since, cosθ = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$ = $-\frac{2\sqrt{5} }{5}$

= $\frac{2}{\sqrt{5}}$

By applying Pythagoras theorem in the right triangle,

(Hypotenuse)² = (Opposite side)² + (Adjacent side)²

(√5)² = (Opposite side)² + (2)²

5 = (Opposite side)² + 4

Opposite side = √(5 - 4)

= 1

Since, sinθ = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

= $\frac{1}{\sqrt{5}}$

Since, sine is positive in IInd quadrant,

sinθ = $\frac{1}{\sqrt{5}}$

Therefore, option A will be the answer.

8 0

3 years ago

Beth bought two pairs of earrings for $12.00 each. She also had to pay 6% sales tax. What was her total bill?$12.72$19.20$25.44$

Zinaida [17]

Beths earrings were $25.44 after taxes.

6 0

3 years ago

Read 2 more answers

Solve for x and round your answer to the nearest tenth.

Yuliya22 [10]

Answer:

I believe it should be 32.9

Step-by-step explanation:

3 0

3 years ago

Sasha solved an equation, as shown below: Step 1: 8x = 56 Step 2: x = 56 – 8 Step 3: x = 48 Part A: Is Sasha's solution correct

bekas [8.4K]

Incorrect, she should have divided both sides by 8. The answer should be x=7. There is only 1 solution to the equation because x is raised to the first degree. It is not a polynomial equation so there won't be more than 1 answer to the equation.

4 0

4 years ago