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3 years ago

20POINTS x-4y=1 and 2 x-8y=2

1 answer:

4 0

First you would take one and move it over to the left side and never leave for why and then you divide by one which would leave for why and it would also have X equals 4Y and then you divide ask my Y and I will just leave you which is XY equals four

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According to the Centers for Disease Control and Prevention, the proportion of U.S. adults age 25 or older who smoke is 0.22. A

Dmitrij [34]

Answer: Null hypothesis : $H_0:\ p=0.22$

Alternative hypothesis : $H_a:\ p$

Step-by-step explanation:

Given claim : The proportion of U.S. adults age 25 or older who smoke : $p=0.22$

A researcher suspects that the rate is lower among U.S. adults 25 or older who have a bachelor's degree. i.e. $p$

Since the null hypothesis is a fact checked by the researcher or the experimenter that always contains a equals to sign.

∴ Null hypothesis : $H_0:\ p=0.22$

Alternative hypothesis : $H_a:\ p$

3 0

3 years ago

What is the amplitude, period, and phase shift of y= 5cos( x/2 + 2pi/3)

nordsb [41]

Y = A cos(Bx + C)
A - amplitude
$\frac{2\pi}{B}$ - period
$- \frac{C}{B}$ - phase shift

$y=5\cos{( \frac{x}{2} + \frac{2\pi}{3} )}
\\
\\y=5\cos{( \frac{1}{2}x + \frac{2\pi}{3})}
\\
\\A=5,B= \frac{1}{2},C= \frac{2\pi}{3}$

Amplitude: 5
Period: $\frac{2\pi}{B}=\frac{2\pi}{\frac{1}{2}}=4\pi$
Phase shift: $- \frac{C}{B} =- \frac{\frac{2\pi}{3}}{\frac{1}{2}}= -\frac{4\pi}{3}$

3 0

3 years ago

Find the ratio of the width to the length of the rectangle, then simplify the ratio. Use the conversion 100 cm = 1 m.

valkas [14]

The answer to the question is c

3 0

3 years ago

How is counting by 100 and 1,000 like counting by 1 and 10?

romanna [79]

Answer:

it just takes longer

Step-by-step explanation:

you count by 1 from 100 until 1000

4 0

2 years ago

Read 2 more answers

City

xxMikexx [17]

Answer:

The correct option is (B) 69.7%.

Step-by-step explanation:

The table provided represents the probabilities of a positive response to two government programs from citizens in eight cities.

The probabilities mentioned in the table are conditional probabilities, i.e. the probability of a positive response for program 1, given that the individual is from city <em>x</em>.

The probability a positive response for program 1 from an individual from Houston is 69.7%.

Then the conditional probability of a positive response for program 1, given that the individual is from Houston is 69.7%.

Thus, the correct option is (B).

7 0

2 years ago