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3 years ago

Divide. 1 4/9 ÷ 2/3 pls help

Mathematics

1 answer:

kaheart [24]3 years ago

6 0

1 4/9 ÷ 2/3 = 13/9 x 3/2 = 13/6

ok done. Thank to me :>

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15/60

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10/40 is equivalent to 5/20, and you can multiply the top and bottom of this fraction by 3 to get 15/60

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3 years ago

Evaluate the expression if m = 10 and k = 15 4(m to the power of 2 - k) -27

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3 years ago

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3 years ago

The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. Below is the

Vika [28.1K]

Answer:

The value of the test statistic is t=1.12.

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the mean amount of time required to reach a customer service representative significantly differs between the two hotels.

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$H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0$

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The sample 2, of size n2=20 has a mean of 2.01 and a standard deviation of √2.952=1.89.

The difference between sample means is Md=0.64.

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The estimated standard error of the difference between means is computed using the formula:

$s_{M_d}=\sqrt{\dfrac{\sigma_1^2+\sigma_2^2}{n}}=\sqrt{\dfrac{1.72^2+1.89^2}{20}}\\\\\\s_{M_d}=\sqrt{\dfrac{6.531}{20}}=\sqrt{0.327}=0.571$

Then, we can calculate the t-statistic as:

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5 0

4 years ago

Multiply:(xadd1)(xadd2)

erica [24]

3x? I don’t get the question. I think that’s the answer.

8 0

3 years ago

Read 2 more answers