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2 years ago

Matt wants the bookcase to have 3 shelves he wants each shelf to be 2 feet high how many feet high will the bookcase be

Mathematics

1 answer:

ch4aika [34]2 years ago

4 0

3 x 2 = 6 The bookcase will be 6 feet high

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Please help fast! A=?

MrMuchimi

Answer: 77 degrees

Step-by-step explanation:

By the law of sines,

$\frac{\sin 13^{\circ}}{6}=\frac{\sin A}{26}\\\sin A=\frac{26 \sin 13^{\circ}}{6}\\A=\sin^{-1} \left(\frac{26 \sin 13^{\circ}}{6} \right) \approx 77^{\circ}$

7 0

2 years ago

The number of DVDs in a random person’s home collection is counted for a sample population of 80 people. The mean of the sample

VLD [36.1K]

Answer:

$E = 3.46\ movies$

Step-by-step explanation:

The formula to find the error is:

$E = z_{\frac{\alpha}{2}}\frac{\sigma}{\sqrt{n}}$

Where:

$\sigma$ is the standard deviation

n is the sample size

n = 80 people

$\sigma$ = 12 movies

Then

$1- \alpha$ = confidence level = 0.99

$\alpha= 1-0.99$

$\alpha = 0.01\\\\\frac{\alpha}{2} = 0.005$

We look for the Z value: $Z_{0.005}$

$Z_{0.005}=2.58$ Looking in the normal standard tables

Therefore:

$E =2.58*\frac{12}{\sqrt{80}}\\\\E = 3.46\ movies$

7 0

2 years ago

Write the following exponential expression in expanded form 28 to the 6th power. Enter your answer in the following format a • a

Alenkinab [10]

Answer:

28 • 28 • 28 • 28 • 28 • 28

Step-by-step explanation:

The exponent signifies the number of times the base appears as a factor in the product. Here, the base 28 is a factor 6 times:

28×28×28×28×28×28

7 0

2 years ago

What is 15/10 as a mixed number.

Anarel [89]

Answer:

1 1/2

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

john wants to magnify the image of a fire ant and a crab spider so they appear the same length how many times their actual sizes

miv72 [106K]

He needs to magnify the fire ant 5 times, and the crab spider 4, because 20 is a common multiple for both.

7 0

2 years ago

Read 2 more answers