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2 years ago

Please Help..................................

Mathematics

2 answers:

LuckyWell [14K]2 years ago

5 0

HL = HK / 2 = 24/2 = 12
answer is 12 (Second choice)

Alona [7]2 years ago

3 0

24 / 2 = 12 so your answer is 12 hope this helps

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Please Help & Thank You

makkiz [27]

Answer:

67 $\frac{1}{2}$ $cm^3$

Step-by-step explanation:

the volume of a rectangular prism is the three sides multiplied together, $h*w*l$

converting the mixed number to improper fraction to make multiplying easier.

$\frac{9}{2} *6*\frac{5}{2}$ = $\frac{135}{2}$

converting back to mixed number in simplest form

$\frac{135}{2}$ = 67 R 1

$\frac{135}{2}$ = 67 $\frac{1}{2}$

4 0

3 years ago

Suppose that an internal report submitted to the managers at a bank in Boston showed that with 95 percent confidence, the propor

Dmitry [639]

Answer:

The sample size used to compute the 95% confidence interval is 1066.

Step-by-step explanation:

The (1 - α)% confidence interval for population proportion is:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

The 95% confidence interval for proportion of the bank's customers who also have accounts at one or more other banks is (0.45, 0.51).

To compute the sample size used we first need to compute the sample proportion value.

The value of sample proportion is:

$\hat p=\frac{Upper\ limit+Lower\ limit}{2}=\frac{0.45+0.51}{2}=0.48$

Now compute the value of margin of error as follows:

$MOE=\frac{Upper\ limit-Lower\ limit}{2}=\frac{0.51-0.45}{2}=0.03$

The critical value of z for 95% confidence level is:

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

Compute the value of sample size as follows:

$MOE=z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\0.03=1.96\times \sqrt{\frac{0.48(1-0.48)}{n}}\\(\frac{0.03}{1.96})^{2}=\frac{0.48(1-0.48)}{n}\\n=1065.404\\n\approx1066$

Thus, the sample size used to compute the 95% confidence interval is 1066.

4 0

2 years ago

Simplify the expression where possible. (-5 x 2 ) 3 help please!

MAXImum [283]

The answer to (-5 × 2) 3 = -30.

8 0

2 years ago

I NEED HELP!!!!!!!!!!!!

mart [117]

Answer:

n=7

Step-by-step explanation:

I feel like you need the answer now so i'm not gonna write one.

4 0

3 years ago

Tickets to a school dance cost $5. Ninety tickets have already been sold. How many more tickets x must be sold to earn at least

alex41 [277]

Step-by-step explanation:

5x90=450

700-450=250

250/5=50

50 more tickets.

i don't know if that's in an inequality form or not. but that's how many tickets

4 0

3 years ago