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2 years ago

A shirt costs $30 but is on sale for 25% off. How much does the shirt cost after the sale?

Mathematics

1 answer:

FrozenT [24]2 years ago

6 0

Answer:

$22.50

Step-by-step explanation:

Find 25% of 30 and then take away that amount from 30.

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M 4= 111 what is m 5

Lina20 [59]

Hey,
If you meant that $m^{4}= 111$ than $m^{5}$ $= \sqrt[4]{111^{5}}$ but you can't find the exact number.

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3 years ago

Maria bikes 15 miles per hour and starts at 10 miles. Glen bikes 20 miles per hour and starts at 0 mile. At what time and distan

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2 years ago

According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand

notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly = $\hat{p}=\dfrac{121}{1100}=0.11$

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

$P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]$

Hence, the probability that the sample proportion is more than 0.11 = 0.1457

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2 years ago

Please help!!! Find the distance CD rounded<br> to the nearest tenth.

Kamila [148]

Answer:

D=5

Step-by-step explanation:

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2 years ago