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1 year ago

HELP!!! MARKING BRAINLIEST

Mathematics

2 answers:

Ilya [14]1 year ago

4 0

Answer:

Not trying to take points but it is too blurry I can’t see it

Step-by-step explanation:

ella [17]1 year ago

3 0

First, for 3^4, you multiply the number 3 by itself 4 times, so that would be 81. now, let’s figure out what 8 x 7 is. 8 x 7 is 56. now, subtract 56 from 81. your answer is 25! hope this helped!

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Write as a product of two polynomials. 2(3-b)+5(b-3)^2

viktelen [127]

Answer:

$5b^{2}-32b+51$

Step-by-step explanation:

$2(3-b)+5(b-3)^{2}$

$=6-2b+5b^{2}-30b+45$

$=5b^{2}-32b+51$

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1 year ago

What is the value of x, if the area of ΔABC is 12√3 square cm.

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Answer:

What is the value of x, if the area of ΔABC is 12√3 square cm ...

Step-by-step explanation:

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2 years ago

HELP! Which relation is a function? Select all that apply.

Shtirlitz [24]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

According to a recent study of 7335 young people in the US, 30% had been arrested for a crime other than a traffic violation by

victus00 [196]

Answer:

a) Statistic.

b) The population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

Step-by-step explanation:

a) The proportion of 30% is a statistic, as it is a value that summarizes data only from the sample taken in the study from USA Today. Other samples may yield different proportions.

b) We can use the statistic to estimate a confidence interval for the parameter of the population.

The standard error for the proportion is calculated as:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{N}}=\sqrt{\dfrac{0.3\cdot 0.7}{7335}}=\sqrt{2.83\cdot10^5}= 0.00535$

The margin of error is 0.01. We can use this value to determine the level of confidence that represents.

The formula for the margin of error is:

$E=z\cdot \sigma_p=0.01\\\\z\cdot 0.0535=0.01\\\\z=1.87$

This z-value, according to the the standard normal distribution, corresponds to a confidence interval of 94%.

The interval for this margin of error is:

$p-E\leq \pi \leq p+E\\\\0.30-0.01\leq \pi \leq 0.30+0.01\\\\0.29\leq \pi \leq 0.31$

Then, we can conclude that the population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

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3 years ago

What is the x-intercept of the graph 4x-6y=12

kap26 [50]

Answer

x=3 or (3,0) and if you need it y=-2x+3

Step-by-step explanation:

I'm not very good at explaining things, sorry

4 0

2 years ago