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2 years ago

find the area and circumference of the circule .(round your number to the nearest hunderth.) r=4.5 cm

Mathematics

1 answer:

balu736 [363]2 years ago

4 0

Answer:

28.2743338823

Step-by-step explanation:

The circumference of every circle is 3.14, and in order to find the area you must do Pi (3.14) times the radius doubled ( $\pi$ x R2) Hope that helped!

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Someone please help im stuck

BARSIC [14]

The answer is b, -11.
plug in 3 as the input and solve.

4 0

2 years ago

Which expressions are equivalent to 3(6+b)-(2b + 1)?

Anna [14]

Answer:

18+3b-2b-1

b+17

Step-by-step explanation:

$\mathrm{Using\:the\:distributive\:law}:\quad \:-\left(a+b\right)=-a-b$

$-\left(2b+1\right)=-2b-1$

$=3\left(6+b\right)-2b-1$

$=18+3b-2b-1$

$\mathrm{Group\:like\:terms}$

$=3b-2b+18-1$

$\mathrm{Subtract\:the\:numbers:}\:18-1=17$

$=3b-2b+17$

$\mathrm{Add\:similar\:terms:}\:3b-2b=b$

$=b+17$

[RevyBreeze]

7 0

2 years ago

If one inch represents 5 feet, what dimensions would you use to make a scale drawing of a building 30 feet by 65 feet?

iogann1982 [59]

Answer:

30×5=150 feet and for 65 feet 65×5 = 325

3 0

2 years ago

Read 2 more answers

Please just answer this and explain how to solve...i’m not grasping the work :/

OverLord2011 [107]

$\bf Step-by-step~explanation:$

We are given that BA is perpendicular to BD, so that must mean that m∠ABD is a right angle, or 90º. This means: (8x - 10) + (4x + 52) = 90º, since both of the angles add up to become a right angle. We have to solve for x in order to find m∠CBD.

PART 1

$\bf Step~1:$

Equation: (8x - 10) + (4x + 52) = 90

Let's add the like values together first.

$\bf 8x+4x=12x\\-10+52 = 42$

$\bf 12x+42=90$

$\bf Step~2:$

Let's subtract 42 from both sides of the equation to isolate the variable we are solving for, x. Our goal is to isolate it completely to get a value that is equal to x.

$\bf12x+42(-42)=90(=42)\\12x=48$