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4 years ago

The equation of a circle centered at the origin is x^2+y^2=64.what is the radius of the circle?

2 answers:

6 0

EQUATION OF A CIRCLE = (x-h)² + (y-k)² =r²

In this case, since the center of the cercle is in O, then h=0 & k=0

x²+y² = 64

lisov135 [29]4 years ago

6 0

The answer is 8, i thought it was 4 but my apex class said 8 was the correct answer.

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1/5x+1/3=4/3 what’s the answer

Xelga [282]

Answer:

X=5

Step-by-step explanation:

4/3-1/3=1

1 / 1/5x = 5

3 0

4 years ago

Can someone please help? Thank you :)

Rudik [331]

The value of x is 8.

Solution:

Given $\triangle V D G \sim \triangle V N Q$ .

DG = 60, NQ = 48, DN = 15, NV = x + 4

To find the value of x:

Property of similar triangle:

If two triangles are similar then the corresponding angles are congruent and the corresponding sides are in proportion.

$$\Rightarrow\frac{DG}{NQ} =\frac{DN}{NV}$

$$\Rightarrow\frac{60}{48} =\frac{15}{x+4}$

Do cross multiplication.

$$\Rightarrow60(x+4)=15\times48$

$$\Rightarrow60x+240=720$

Subtract 240 from both side of the equation.

$$\Rightarrow60x+240-240=720-240$

$$\Rightarrow60x=480$

Divide by 60 on both sides of the equation.

$$\Rightarrow\frac{60x}{60} =\frac{480}{60}$

$$\Rightarrow x=8$

Hence the value of x is 8.

5 0

3 years ago

74.64 rounded to the nearest tenth how do you round a decimaled number?

Irina18 [472]

Answer:

$\displaystyle 74,6$

Step-by-step explanation:

You have a 6 in the tenths position, so the 4 in the hundredths position tells you to STAY at $\displaystyle 74,6.$

I am joyous to assist you at any time.

5 0

2 years ago

Question 3

Scilla [17]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the vertices of the triangles is missing.

However, the following formula can be used to calculate distance;

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}$

Take for instance:

$A = (1,8)$

$A' = (7,8)$

The distance between both is:

$d = \sqrt{(1- 7)^2 + (8- 8)^2}$

$d = \sqrt{(-6)^2 + 0^2}$

$d = \sqrt{36 + 0}$

$d = \sqrt{36}$

Take square root

$d = 6$

Apply the above steps to the complete question

6 0

3 years ago

4p+8=12p-16????????????

AnnZ [28]

Answer twenty nine the answers 29 because 4 + 8=12+6=29

5 0

3 years ago

Read 2 more answers