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Fittoniya [83]
3 years ago
15

Find the EXACT area AND circumference of the following circle.

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
3 0

area = Pi*r^2

= Pi*10^2

=100Pi

=314.1592654

circumference = Pi*Diameter

= Pi*20

=20Pi

=62.83185307

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What is equivalent to 40/64
Nadya [2.5K]

Answer: 5/8


Step-by-step explanation:


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3 years ago
Simplify each expression then factor the expression 14-28t-5(7+10t)
ludmilkaskok [199]

Answer:

Simplified: -21-98t

Factored: -7(14t+3)

Step-by-step explanation:

The given expresion is:

14-28t-5(7+10t)

We expand the parenthesis to get:

14 - 28t -35 - 70t

We group like terms to get:

14 -35  - 28t- 70t

We combine similar terms to get:

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We now factor to obtain:

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5 0
3 years ago
A human body had 30 times as many platelets as white blood cells. A small sample of blood has 8×10'3 white blood cells. About ho
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To determine the number of platelets present in the human body, we need a relation that would relate this value to the given value above which is the number of white blood cells. Fortunately, we are given a ratio of 30. So, we use this value as follows:

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number of platelets / <span>8×10^3 white blood cells = 30
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5 0
4 years ago
In triangle EFG, m of E = 30 degrees, m of F = 60 degrees, and m of G = 90 degrees. Which of the following statements about tria
Effectus [21]

Answer:

A. EG = √3 × FG

D. EG = √3/2 × EF

E. EF = 2 × FG

Step-by-step explanation:

∵ tan 60 = √3

∵ tan60 = EG/GF

∴ EG/GF = √3

∴ EG = √3 × GF ⇒ A

∵ m∠F = 60°

∵ sin60 = √3/2

∵ sin 60 = EG/EF

∴ √3/2 = EG/EF

∴ EG = √3/2 × EF ⇒ D

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∵ cos60 = GF/EF

∴ GF/EF = 1/2

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8 0
3 years ago
Read 2 more answers
Find X and y<br><br> 12, 16
zavuch27 [327]

Answer:

  • x = 6√2
  • y = 6√6

Step-by-step explanation:

The triangles are all similar, so corresponding sides are proportional.

__

<h3>x</h3>

  long side/short side = x/6 = 12/x

  x² = 72 . . . . . . . multiply by 6x

  x = 6√2 . . . . . . take the square root

__

<h3>y</h3>

  hypotenuse/long side = y/12 = (12+6)/y

  y² = 216 . . . . . multiply by 12y

  y = 6√6 . . . . . take the square root

8 0
2 years ago
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