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3 years ago

The formula for the area of a circle is a= 2Ïr^2. how does the value for a change when r increases

1 answer:

ivann1987 [24]3 years ago

6 0

The radius is half the diameter of the circle. If the radius gets larger then the whole circle grows. When the circle gets larger, the area gets larger too.

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For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

QveST [7]

Answer:

Step-by-step explanation:

becuse the first one would be 4x and the other ones 2x

3 0

3 years ago

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I need help I'm lost

jenyasd209 [6]

Answer:

6 1/12

Step-by-step explanation: I have a brain

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3 years ago

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What is the solution to this equation 5x -8(x + 5)= 6-3x

Solnce55 [7]

Answer:

no solution

Step-by-step explanation:

5x - 8(x + 5) = 6 - 3x

Remember to follow PEMDAS. Note the equal sign, what you do to one side, you do to the other.

First, distribute -8 to all terms within the parenthesis

-8(x + 5) = (-8)(x) + (-8)(5) = -8x - 40

5x - 8x - 40 = 6 - 3x

Isolate the variable (x). Add 3x & 40 to both sides

5x - 8x (+3x) - 40 (+40) = 6 (+40) - 3x (+3x)

5x - 8x + 3x = 6 + 40

Simplify. Combine like terms

(5x - 8x + 3x) = (6 + 40)

0 = 46 ; False 0 ≠ 46 ∴ no solution is your answer

8 0

3 years ago

What is parallel to 2x-y=1 and contains (4, -6)? Please show your work!

Contact [7]

$k:\ y=m_1x+b_1\\\\l:\ y=m_2x+b_2\\\\l\ ||\ k\iff m_1=m_2\\\\\text{We have}\\\\k:\ 2x-y=1\ \ \ |-2x\\-y=-2x+1\ \ \ \ |\cdot(-1)\\y=2x-1\to m_1=2\\\\l:\ y=m_2x+b\\\\l\ ||\ k\iff m_2=2\\\\l:\ y=2x+b\\\\\text{The line l contains (4, -6)}\\\\\text{Put the values of coordinates to the equation of line l}\\\\-6=2(4)+b\\-6=8+b\ \ \ \ \ |-8\\b=-14\\\\Answer:\ y=2x-14\to 2x-y=14$

5 0

3 years ago

The solids are similar. Find the volume V of the larger solid.

diamong [38]

Answer:

9604

Step-by-step explanation:

V = (7/3)³ × 756

= 343/27 × 756

= 9604 ft³

4 0

2 years ago