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3 years ago

Can you guys help me pls what is [34 + (9×2)]÷2= what is it pls help

Mathematics

2 answers:

Minchanka [31]3 years ago

8 0

Answer:26

9x2=18+34=52/2=26

irinina [24]3 years ago

5 0

Answer:

306

Step-by-step explanation:

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The kerwoods went out to eat at Chili's if there's a bill if they're bill was 58.16 they get in they gave their serve a 15% tip

cestrela7 [59]

8.724 15% of 58.16 is 8.724$

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3 years ago

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kakasveta [241]

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Step-by-step explanation:

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Find the perimeter?<br> Please pls

Harrizon [31]

Answer:

119 $\frac{4}{7}$

Step-by-step explanation:

10 + 12 + 15 + 24 + 12 + 10 + 35 = 118

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4 years ago

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We are interested in determining whether or not the variances of the sales at two small grocery stores are equal. A sample of 21

katen-ka-za [31]

Answer:

$F=\frac{s^2_A}{s^2_B}=\frac{28.284^2}{20^2}=1.99996$

Step-by-step explanation:

Data given and notation

$n_A = 21$ represent the sampe size for A

$n_B =16$ represent the sample size for B

$s_A = 28.284$ represent the sample deviation for A

$s_B = 20$ represent the sample deviation for B

$\alpha$ represent the significance level provided

F test is a statistical test that uses a F Statistic to compare two population variances, with the sample deviations s1 and s2. The F statistic is always positive number since the variance it's always higher than 0. The statistic is given by:

$F=\frac{s^2_1}{s^2_2}$

Solution to the problem

System of hypothesis

We want to test if we have the same variation, so the system of hypothesis are:

H0: $\sigma^2_A = \sigma^2_B$

H1: $\sigma^2_A \neq \sigma^2_B$

Calculate the statistic

Now we can calculate the statistic like this:

$F=\frac{s^2_A}{s^2_B}=\frac{28.284^2}{20^2}=1.99996$

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4 years ago

Sarah's savings account balance changed by $34 one week by -$67 the next week which amount represents the greatest change

Sophie [7]

Getting $34 in your bank account is not as much as losing $67. The greatest change was the loss of $67 (-$67)

6 0

4 years ago

Can you guys help me pls what is [34 + (9×2)]÷2= what is it pls help​

Can you guys help me pls what is [34 + (9×2)]÷2= what is it pls help