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Dimas [21]
3 years ago
14

Which is the completely factored form of 5w2 – 20?

Mathematics
2 answers:
gregori [183]3 years ago
8 0
5(w-2)(w+2) is completely factorized.
Rzqust [24]3 years ago
6 0

Answer:

5(w - 2)(w + 2)

Step-by-step explanation:

5w² - 20

5(w² - 4)

5(w - 2)(w + 2)

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50 POINTS WILL GIVE BRANLIEST - Can a function be both increasing and decreasing?
BartSMP [9]

Answer:

i think yes it can

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Groups of adults are randomly selected and arranged in groups of three. The random variable x is the number in the group who say
Vera_Pavlovna [14]

Answer:

0.789

Step-by-step explanation:

First, find the expected value (the mean).

μ = ∑ x P(x)

μ = (0) (0.359) + (1) (0.436) + (2) (0.180) + (3) (0.025)

μ = 0.871

Next, find the variance.

σ² = ∑(x − μ)² P(x)

σ² = (0 − 0.871)² (0.359) + (1 − 0.871)² (0.436) + (2 − 0.871)² (0.180) + (3 − 0.871)² (0.025)

σ² = 0.622

Finally, find the standard deviation:

σ = √0.622

σ = 0.789

8 0
3 years ago
Draw an area model to solve 774 divided by 3
Travka [436]
201020202020339944949494944
4 0
3 years ago
A leather costing $199.99 is placed on sale at a discount of 20%. At the end of the sale, the sale price is increased by 20%. At
qaws [65]

Answer:

$15.679216

Step-by-step explanation:

new sp = 80% of cp

= 0.8 x 199.99

= 159.992

new sp2 = 120% of cp2

= 1.2 x 159.992

÷ 191.9904

new sp3 = 80% of cp3

= 0.8 x 191.9904

= 153.59232

new sp4 = 120% of cp4

= 1.2 x 153.59232

= 184.310784

difference = 199.99 - 184.310784

=15.679216

8 0
3 years ago
A study found that 1% of Social Security recipients are too young to vote. If 800 social security recipients are randomly select
GalinKa [24]

Answer:

8, 7.92, 2.81

Step-by-step explanation:

For each Social Security recipient, there are only two possible outcomes. Either they are too young to vote, or they are not. The probability of a Social Security recipient is independent of any other Social Security recipient. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

The variance of the binomial distribution is:

V(X) = np(1-p)

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

In this problem, we have that:

n = 800, p = 0.01

So

Mean:

E(X) = np = 800*0.01 = 8

The variance of the binomial distribution is:

V(X) = np(1-p) = 800*0.01*0.99 = 7.92

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{800*0.01*0.99} = 2.81

Formatted answer: 8, 7.92, 2.81

6 0
4 years ago
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