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12345 [234]
3 years ago
5

Please help asap 15 pts

Mathematics
1 answer:
topjm [15]3 years ago
4 0

The correct answer is A.

To find this, we need to divide away all the things being multiplied by r.

S = 2(pi)(r)(h) ----> Divide by 2(pi)(h)

S/(2*pi*h) = r

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X(2x-8) = 0 how do you solve
sleet_krkn [62]

x * 2x = 3x   X*-8= -8x

minus 3x on both side

= -11x

-11x = 0

divide -11 on both side

= 0

4 0
3 years ago
Need help on polynomials
kkurt [141]
Follow these steps and you should get your answer its not the same questions but it should help
The answer to the problem is as follows:

These two polynomials are 5x^2 + 3x + 5 and 3x^2 +2x + 2:

Subtracting the second expression from the first:

<span>5x^2 + 3x + 5
- (3x^2 +2x + 2)
</span>____________
<span>2x2 + x + 3  <------------- The difference
</span>


7 0
4 years ago
Simplify.
Dafna11 [192]

Answer:

C. 2x^2-7x+7

Step-by-step explanation:

(3x^2-2x+2)-(x^2+5x-5)     <em>Given</em>

From the given you will subtract like terms from both parenthesis.

3x^2-x^2=2x^2

-2x-5x=-7x

2-(-5)=7                      

6 0
3 years ago
the length of an arc of a circle is 1/5 of its circumference. if the area of the circle is346.5cm²,find the angle subtended by t
dexar [7]

Answer:

72°

Step-by-step explanation:

From the question,

Area of the circle = πr²

A = πr²................. Equation 1

Where r = radius of the circle.

⇒ r = √(A/π)............. Equation 2

Given: A = 346.5 cm², π = 3.14

r = √(346.5/3.14)

r = √(110.35)

r = 10.5 cm.

Therefore,

circumference of the circle = 2πr = 2×3.14×10.5

circumference = 65.94 m

If the length of the arc(s) is 1/5 of its circumference.

Therefore, length of arc (s) = 13.188

⇒ length of arc/circumference = 13.188/65.94 =  1/5

s/2πr = θ/360

Where θ = angle substends at the center of the circle

1/5 = θ/360

θ = 360/5

θ = 72°

3 0
3 years ago
4) Given the line with equation 2x + 5y= 10 :
Svetlanka [38]
A. <span>2x + 5y= 10
    5y= -2x+10
</span>-> y= -2/5x+2

b. The slope is 2

c. For the y  intecpet, x is always 0

y= -2/5x+2
y= -2/5(0)+2
y=0+2
y=2

(0,2) is the y-interecpt

d. Please veiw below

4 0
3 years ago
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