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3 years ago

If the radius of a circle is doubled in length, the circumference of the circle is?

Mathematics

2 answers:

umka2103 [35]3 years ago

5 0

If the radius of a circle is doubled in length, the circumference of the circle is also doubled in length

mr Goodwill [35]3 years ago

3 0

I think it would then be the perimeter

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Multiply using FOIL or Table method (x + 4) (x + 5)

mylen [45]

Answer:

${x}^{2} + 9x + 20$

Step-by-step explanation:

1) Use FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

${x}^{2} + 5x + 4x + 20$

2) Collect like terms.

${x}^{2} + (5x + 4x) + 20$

3) Simplify.

${x}^{2} + 9x + 20$

Therefor, the answer is x² + 9x + 20.

5 0

3 years ago

Make t the subject of this formula. r = 7 (t + 3)

kari74 [83]

Answer:

t= r-21

Step-by-step explanation:

r = 7(t+3)

expanding the bracket

r = 7t + 21

bringing t to the left hand side

7t = r - 21

divide both sides by seven

t= r-21

3 0

3 years ago

Complete the table for the given rule. Rule: y= 3x

Ratling [72]

Answer:

x=5

y=30

x=15

Step-by-step explanation:

y=3x=15, then x=15/3, x=5

x=10, then y=3x=3*10=30

y=3x=45, then x=45/3, x=15

6 0

3 years ago

What is the approximate volume of a cylinder with a diameter of 14 meters and a height of 10 meters? Use 3.14 for pi.

WITCHER [35]

V = πr2h

V = 3.14 x 7 x 7 x 10

V = 1538.6 cubic meters.

Hope i become the brainliest.

5 0

3 years ago

Solve for x. Please look at the picture and answer it. Thank you.

Tatiana [17]

<h3>Answer :- </h3>

x = 24

<h3>Solution :- </h3>

2x + 42 = 90
2x = 90 - 42
2x = 48
x = 48/2
x = 24

Hope it helps ~

7 0

2 years ago

Read 2 more answers