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2 years ago

Can you someone help me please

Mathematics

1 answer:

expeople1 [14]2 years ago

6 0

It is 2. (4x - 1) which is false!

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PLEASE HELP Find the product. (a²b³)⁴

cluponka [151]

Answer:

$a^8b^{12}$

Step-by-step explanation:

when you raise an exponent to a power you multiply

Also since the terms inside the parenthesis are multiplied and not added, you don't have to worry about expanding it

$(a^2b^3)^4 = a^{2*4}b^{3*4}=a^8b^{12}$

8 0

3 years ago

Read 2 more answers

If the probability is 0.54 that Stock A will increase in value during the next month and the probability is 0.68 that Stock B wi

Aloiza [94]

P(A) =0.54

P(B)= 0.68

P'(A)= 1-0.54 = 0.46

P'(B)= 1- 0.68 = 0.32

The probability of neither of both event will occur:

= P'(A)×P'(B)

=0.46 × 0.32

=0.1472

3 0

2 years ago

Jenny goes to the store with $9.87. She then spends $2.81 of it. How much money does she have left?

Blababa [14]

Answer:

Step-by-step explanation:

$9.87

- <u>2.81</u>

$7.06 Jenny has left

4 0

2 years ago

Read 2 more answers

What are the steps to find the slope of the line through the pair of points ? <br>

Artyom0805 [142]

Answer:

$\frac{-15}{-14} \\$

Step-by-step explanation:

You would do y2-y1 over x2-x1. In your equation, this would be -15-0 over -11-3, giving you -15 over -14

8 0

3 years ago

A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. Find the te

vredina [299]

Answer:

b. 2.333

Step-by-step explanation:

Test if the mean transaction time exceeds 60 seconds.

At the null hypothesis, we test if the mean transaction time is of 60 seconds, that is:

$H_0: \mu = 60$

At the alternate hypothesis, we test if it exceeds, that is:

$H_1: \mu > 60$

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

60 is tested at the null hypothesis:

This means that $\mu = 60$

A sample of 16 ATM transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds.

This means that $n = 16, X = 67, s = 12$

Value of the test statistic:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{67 - 60}{\frac{12}{\sqrt{16}}}$

$t = \frac{7}{3}$

$t = 2.333$

Thus, the correct answer is given by option b.

5 0

2 years ago