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Julli [10]
3 years ago
7

3x = 12 isolates the variable on one side?

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0
First, Divide by 3 on both sides.
So 3x=12 will turn to 3x/3=12/3
Which isolates the variable x and the answer: x= 4
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Katie's bank statement shows a closing balance of $178.11. There are no outstanding checks or deposits. Her checkbook shows a ba
xxTIMURxx [149]

Answer:

The amount <u>$20.00</u> is the overdraft fee.

Step-by-step explanation:

Given:

Katie's bank statement shows a closing balance = $178.11.

Her checkbook shows a balance = $198.11.

Now, to get what might account for the different balances?

Closing balance of Katie's bank statement = $178.11

Balance of her checkbook shows = $198.11.

As, there are no outstanding checks or deposits.

So, to get the difference of amount:

\$198.11-\$178.11

=\$20.00.

Thus, $20.00 is the overdraft amount.

Therefore, the amount $20.00 is the overdraft fee.

6 0
3 years ago
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Nostrana [21]

Answer:

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Step-by-step explanation:

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3 years ago
A psychological experiment was conducted to investigate the length of time (time delay) between the administration of a stimulus
aleksklad [387]

Answer:

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

The significance level for this test is 0.05.

Step-by-step explanation:

In this case, we want to prove if there is significant evidence that the mean differs from 1.6 seconds. That is the same as having evidence to reject the the hypothesis H_0:\mu= 1.6 (the null hypothesis always have the equal sign).

We have to test the null hypothesis

H_0:\mu= 1.6

The significance level for this test is 0.05

Calculation of the t-statistic:

t=\frac{M-\mu}{s/\sqrt{n}} =\frac{2.2-1.6}{0.57/\sqrt{36}} =\frac{0.6}{0.063}= 9.47

If we look up in a t-table for t=9.47 and df=(36-1)=35, we get this value appears with a probability of zero. A large number like that is very unlikely to happen.

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

6 0
3 years ago
URGENT NEED IMMEDIATE SUPPORT WILLING TO GIVE BRAINLY
frozen [14]

4 hours for 18

7 hours for 25.50

Difference in hours: 7-4 = 3

Difference in cost: 25.50 - 18 = 7.50

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8 0
3 years ago
Please Help!! Screenshot below!
Reika [66]

Answer:

the answer is x+3(the 3rd option)

Step-by-step explanation:

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