2 years ago

L

Mathematics

1 answer:

Effectus [21]2 years ago

7 0

Answer:

Step-by-step explanation:

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In order to estimate the mean amount of time computer users spend on the internet each month, how many computer users must be su

prisoha [69]

Answer:

1568

Step-by-step explanation:

The computation of the minimum sample size is shown below:

Given that

Error E = 11

The population standard deviation $\sigma$ =217

Confidence level 1-α = 95%

Now following formula should be used

n > (Zalpha ÷ 2 × sigma ÷ E)^2

As we know that

Zalpha ÷ 2= 1.96

Now the sample size is

n> (1.96 × 202 ÷ 10)^2

= 1568

6 0

2 years ago

Of the $2400 Mr Calvin earned, he spent 3/8 on food, 1/3 on taxes and 1/6 on other expenses. Find out how much all this is in do

sattari [20]

Answer: $300

Step-by-step explanation:

Mr. Calvin earned $\$2400$

He spent $\frac{3}{8}$ on food i.e.

$\Rightarrow \dfrac{3}{8}\times 2400=\$900$

$\dfrac{1}{3}\quad \text{on taxes i.e.}\\\\\Rightarrow \dfrac{1}{3}\times 2400=\$800$

$\dfrac{1}{6}\ \text{on other expenses i.e.}\\\\\Rightarrow \dfrac{1}{6}\times 2400=\$400$

Remaining money = $2400-900-800-400=\$300$

So, he saved $300 after expenses

7 0

2 years ago

Please help me <br> I will give brainlist please explain

Airida [17]

So you have to graph that on to the chart i think

3 0

2 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B2x-3%7D%20%3D5" id="TexFormula1" title="\sqrt{2x-3} =5" alt="\sqrt{2x-3} =5" align="

Digiron [165]

X=14

How to:
Square both sides then solve the equation

7 0

2 years ago

Solve a^3=64 pleaseeevjelo

MariettaO [177]

Answer:

a=4

Step-by-step explanation:

a^3=64

We can see that 64= 4*4*4= 4^3, replacing 64 with 4^3 in the equation:

a^3 = 4^3
a= 4

8 0

2 years ago

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