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3 years ago

20 is equal to 5 less than twice a number.

1 answer:

5 0

If we have a number represented by n, we have 20 is equal to, so 20=something. That something is "5 less than twice a number". 5 less than something means something-5, and something-5=20. Since 5 is less than twice a number, and twice a number is n+n=2n, we have 2n-5=20
Actually solving the problem, we can start by adding 5 to both sides, resulting in 2n=25. Next, we can divide both sides by 2 to get n=12.5

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The measure of XYZ is 45. The length of radius YZ is 6 inches. What is the area of sector XYZ?

balandron [24]

Answer:

area of a sector = 14.13 yards²

Step-by-step explanation:

XYZ is a sector of a circle. The radius YZ is 6 inches .The angle of the sector is given as 45°. The area of the sector can be solved as follows.

area of a sector = ∅/360 × πr²

where

r = radius

∅ = center angle

r = 6 inches

∅ = 45°

area of a sector = 45/360 × 3.14 × 6²

area of a sector = 45/360 × 3.14 × 36

area of a sector = 45/360 × 113.04

area of sector = 1/8 × 113.04

area of a sector = 14.13 yards²

6 0

3 years ago

Read 2 more answers

How many 3/4 are in a whole

dezoksy [38]

I believe it to be 0.75

7 0

2 years ago

Simplify : (√ + √ ) (√ − √) ( + )( 2 + 2 )

jek_recluse [69]

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3 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

leonid [27]

Answer:

$\frac{1}{5^{9} }$

Step-by-step explanation:

Using the rule of exponents

$a^{-m}$ = $\frac{1}{a^{m} }$ , then

$5^{-9}$ = $\frac{1}{5^{9} }$

5 0

2 years ago

Read 2 more answers

This probability distribution shows the typical distribution of pitches thrown to a batter in a given at bat in a baseball game.

Vikki [24]

Answer:

0.35

Step-by-step explanation:

This probability distribution is shown below:

Pitch 1 2 3 4 5

Frequency 15 20 40 15 10

Probability 0.15 0.2 0.4 0.15 0.1

The probability that the pitcher will throw fewer than 3 pitches to a batter = P(X < 3)

X is the number of pitches thrown. Therefore:

P(X < 3) = P(X = 1) or P(X = 2)

The additive rule pf probability states that if two events X and Y are dependent events, the probability of X or Y occurring is the sum of their individual probability.

P(X < 3) = P(X = 1) or P(X = 2) = P(X = 1) + P(X = 2) = 0.15 + 0.2 = 0.35

The probability that the pitcher will throw fewer than 3 pitches to a batter = 0.35

8 0

3 years ago