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3 years ago

PLEASE HELP

Mathematics

1 answer:

slava [35]3 years ago

5 0

Answer:

$\log(24)$

Step-by-step explanation:

$\log(8)+\log(3)=\log(8*3)=\log(24)$

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Dominic has 12 children. he bought pizza for his kids. If each child ate 1/3 of pizza, how many pizzas did Dominic need to buy

Kazeer [188]

Answer:

Step-by-step explanation:

If each of 12 kids ate 1/3 of a pizza, the amount eaten was ...

12 × 1/3 pizza = 12/3 pizza = 4 pizza

Dominic needed to buy 4 pizzas.

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2 years ago

5n + 10 for n= 3<br> I need help with this problem please

Usimov [2.4K]

Answer:

Step-by-step explanation:

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3 years ago

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In 2014, 12% of adults said they learned Japanese by watching anime and having the subtitles in English. A recent survey found t

Ierofanga [76]

Answer:

Step-by-step explanation:

To Test :-

H0 :- P = 0.12

H1 :- P ≠ 0.12

P = X / n = 156/800 = 0.195

Test Statistic :-

Z = ( P - P0 ) / ( √((P0 * q0)/n)

Z = ( 0.195 - 0.12 ) / ( √(( 0.12 * 0.88) /800))

Z = 6.5279

Test Criteria :-

Reject null hypothesis if Z > Z(α/2)

Z(α/2) = Z(0.05/2) = 1.96

Z > Z(α/2) = 6.5279 > 1.96, hence we reject the null hypothesis

Conclusion :- We Reject H0

There is sufficient evidence to support the claim that there is a difference.

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4 years ago

Hi, can you help me answer this question please, thank you!

n200080 [17]

As your testing H0:p=0.79, then you have a two-tailed test.

The p-value at two-tailed test is given by:

$\begin{gathered} p=P(Z\leq-z)+P(Z\ge z) \\ p=P(Z\leq-z)+(1-P(Z\leq z) \\ p=2P(Z\leq-z) \\ 0.79=2P(Z\leq-z) \\ P(Z\leq-z)=\frac{0.79}{2} \\ P(Z\leq-z)=0.395 \end{gathered}$

Then, you need to check into the standard normal cumulative table to find at which -z you do have a probability of 0.395. Thus:

As you can see in the picture at z=-0.26 you have a P(Z<=-z)=0.3974

And at z=-0.27 you have a P(Z<=-z)=0.3936.

The average of these values is:

$\frac{0.3974+0.3936}{2}=0.3955$

Then, you have a probability of 0.395 at a z of:

$\frac{-0.26+(-0.27)}{2}=-0.265$

Then -z=-0.27, thus z=0.27

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1 year ago

Which number line represents the solution to the inequality 125x + 200 > 1,200?

Elza [17]

Answer:

see below

Step-by-step explanation:

25x + 200 > 1,200

Subtract 200 from each side

25x + 200-200 > 1,200-200

25x> 1000

Divide by 25

25x/25 >1000/25

x>40

6 0

3 years ago