1 year ago

What set does 4/5 belong in

1 answer:

3 0

Answer:

Natural numbers are the counting numbers, meaning that they make up the set {1,2,3,4,5,...} So , 4/5 is belong to natural number

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$250 is invested in the bank that pays 7% simple interest. Calculate the amount of money in the account after 1 year

victus00 [196]

250*1.07=267.5
=267.50

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3 years ago

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What is the sum of the following equatiioin? 10x+20y+5x=?

Vsevolod [243]

Answer:

15x + 20y

Step-by-step explanation:

First, we need to combine like terms,

10x + 20y + 5x

15x + 20y

Since x and y are different variables, we cannot combine them, meaning that the answer is,

15x + 20y

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HELP ASAP SOS!!! <br> QUESTION : write a 4 step proof that triangle ABD is congruent to ABD

SCORPION-xisa [38]

Here are a few reasons:

The triangles have the same three sides

The triangles have the same three angles

The triangles could perfect overlap one another

They have corresponding angles.

Not sure if this helped but I hope so!

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3 years ago

The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. F

OlgaM077 [116]

Answer:

The Sample size is 1918.89035

Step-by-step explanation:

Consider the provided information.

It is given that 14 out of 105 samples failed.

Therefore p = 14/105 = 0.13 3... and q=1-0.133=0.867

Samples would be needed to create a 99 percent confidence interval.

Subtract the confidence level from 1, then divide by two.

$\frac{(1 -0.99)}{2}=0.005$

By standard normal table z=2.5758≈2.58

Calculate the sample size as:

$n=\frac{z^2pq}{e^2}$

Where, e is the margin of error,

Substitute the respective values.

$n=\frac{(2.58)^2(0.133)(0.867)}{(0.02)^2}=1918.89$

Hence, the Sample size is 1918.89035

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3 years ago

Last year, there were 380 students at woodland middle school. This year, the student population will increase by 5%. What will b

olga_2 [115]

399 because 380 x .05 =19 and 19+380
=399

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3 years ago

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