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3 years ago

Asnwer for brainliest

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

2^4 x (2^2)^-2 = 1

(2^2)^2 x (2^3)^-3 = 2^-5

(-2^-4)^-2 x (2^2)^0 = 2^8

and the last one is 2^-32

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What is the solution of this equation? 3a = 18

Triss [41]

3a =18

3a/3 = 18/3

a = 18/3

a = 6

Hope this helps

6 0

3 years ago

Read 2 more answers

Do any of them you know

snow_tiger [21]

Answer:

I believe I am correct.

1: slope

2: linear equation

3: y-intercept

4: slope-intercept form

5: y-intercept is (0,6) the slope is -2

6: y-intercept is (0,3.4) the slope is 10/6

7: y-intercept is (0,4) the slope is -4/16

Hope this works for you Jack Jiang.

5 0

3 years ago

A hammer is 36 centimeters long. How many millimeters is the length of the hammer? (2 points)

tigry1 [53]

Answer:

Step-by-step explanation:

whats is the image of (12,-9 after dilation by a scale 1/3 centered at the origin?

8 0

3 years ago

Again ... Commute times in the U.S. are heavily skewed to the right. We select a random sample of 500 people from the 2000 U.S.

VladimirAG [237]

Answer:

We conclude that the mean commute time in the U.S. is less than half an hour.

Step-by-step explanation:

We are given that a random sample of 500 people from the 2000 U.S. Census is selected who reported a non-zero commute time.

In this sample the mean commute time is 27.6 minutes with a standard deviation of 19.6 minutes.

Let $\mu$ = mean commute time in the U.S..

So, Null Hypothesis, $H_0$ : $\mu \geq$ 30 minutes {means that the mean commute time in the U.S. is more than or equal to half an hour}

Alternate Hypothesis, $H_A$ : $\mu$ < 30 minutes {means that the mean commute time in the U.S. is less than half an hour}

The test statistics that would be used here One-sample t-test statistics as we don't know about population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean commute time = 27.6 minutes

s = sample standard deviation = 19.6 minutes

n = sample of people from the 2000 U.S. Census = 500

So, the test statistics = $\frac{27.6 -30}{\frac{19.6}{\sqrt{500} } }$ ~ $t_4_9_9$

= -2.738

The value of t test statistic is -2.738.

Since, in the question we are not given with the level of significance so we assume it to be 5%. Now, at 5% significance level the t table gives critical values of -1.645 at 499 degree of freedom for left-tailed test.

Since our test statistic is less than the critical value of t as -2.378 < -1.645, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the mean commute time in the U.S. is less than half an hour.

4 0

4 years ago

Solve plssszzzzagavagsg

julia-pushkina [17]

Answer:

OOO I KNO ITS 7.2 15.6 OK

Step-by-step explanation:

SO WHAT YOU DO IS 7.2 THEN ROUND SO THEN ITS 6 THEN 15.6 16

THEN YOU WILL DIVIDE. I HOPE THIS HELPS

THIS IS HOW I LEARNED BUT I COULD BE WRONG.

PLZZZ BRAINLYIST!!!!

OH AND HAVE A WONDER FULL DAY

3 0

3 years ago