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3 years ago

PLEASE HELP ME!!!!!!!!!

Mathematics

2 answers:

Goshia [24]3 years ago

7 0

Answer:

Angles that add up to 90: Complementary

Angles that add up to 180 degrees: Supplementary

Step-by-step explanation:

Dmitriy789 [7]3 years ago

3 0

Answer:

1. Complementary

2 Supplementary

Hope this helped!

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Struggling so much with number 18 I need help plz someone help me

lilavasa [31]

Answer:

I think it is B

Step-by-step explanation:

4 0

3 years ago

a carnival game consists of 3 dart throws at a target. The probability of scoring a hit on any one throw is 30%. Using the binom

Ghella [55]

Answer: Probability of scoring 2 hits = 0.63.

Step-by-step explanation:

Since we have given that

Number of dart throws at a target = 3

Probability of scoring a hit on any one throw = 30%

We will use "Binomial Distribution" i.e.

$P=^nC_rp^r(1-p)^{n-r}$

where,

n denotes number of dart throws at a target,

r denotes number of required throws

p denotes probability of success

(1-p) denotes probability of failure

So, Probability of success is given by

$\frac{30}{100}=\frac{3}{10}$

Probability of failure is given by

$1-\frac{30}{100}=\frac{70}{100}=\frac{7}{10}$

We will use "Binomial Distribution" i.e.

$P(X=2)=^3C_2(\frac{3}{10})^2\times (\frac{7}{10})\\\\P(X=2)=\frac{9}{100}\times \frac{7}{100}\\\\P(X=2)=\frac{63}{100}\\\\P(X=2)=0.63$

Hence, Probability of scoring 2 hits = 0.63.

3 0

4 years ago

What is square root of 196cm

Mademuasel [1]

Answer: 14 cm

Step-by-step explanation:

5 0

4 years ago

Factor completely 2c5 + 44c4 + 242c?.

satela [25.4K]

Answer:

2 c (c^4 + 22 c^3 + 121)

Step-by-step explanation:

Factor the following:

2 c^5 + 44 c^4 + 242 c

Factor 2 c out of 2 c^5 + 44 c^4 + 242 c:

Answer: 2 c (c^4 + 22 c^3 + 121)

7 0

3 years ago

Let Z be the standard normal random variable. Use a probability calculator to answer the following questions: What is the probab

Softa [21]

Answer:

0.6826 = 68.26% probability Z will be within one standard deviation of average.

Step-by-step explanation:

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

What is the probability Z will be within one standard deviation of average?

This is the p-value of Z = 1 subtracted by the p-value of Z = -1.

Z = 1 has a p-value of 0.8413.

Z = -1 has a p-value of 0.1587.

0.8413 - 0.1587 = 0.6826

0.6826 = 68.26% probability Z will be within one standard deviation of average.

8 0

3 years ago