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3 years ago

What plus 24 equals 26

Mathematics

2 answers:

Debora [2.8K]3 years ago

7 0

Answer:

Step-by-step explanation:

6+4=10

2+2=4

_______

4+1=50

so the answer is 50

<h2>https://qcv.gg/rXpglU</h2>

andrezito [222]3 years ago

3 0

Um i’m pretty sure 2

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Invested $8200 at the rate of 4.5% p.a. It earned $738 simple interest. The

Igoryamba

Answer:

2 yrs

Step-by-step explanation:

SI =PTR/100

738=8200 x T x 4.5 /100

738 x 100 / 8200 x 4.5 = T

T =2

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2 years ago

Write seven hundredths in standard form

solniwko [45]

The answer is .07 to this question

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3 years ago

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In a certain fraction, the denominator is less 7 than the numerator. If 3 is added to both the numerator and denominator, the

Aleksandr-060686 [28]

Answer:

original fraction =12/5

Step-by-step explanation:

let x = numerator

therefore

x+3/x-7+3 =15/8

x+3/x-4 =15/8

8(x+3)=15(x-4)

8x+24=15x-60

84=7x

84/7=x

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therefore original fraction = 12/5

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3 years ago

Find the value of x° 40° 65° 70° 100°

Solnce55 [7]

Answer:

= 40°

Step-by-step explanation:

180-115=65°

65+75=140°

180-140=40°

=40°

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2 years ago

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A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only

Semenov [28]

Answer:

Step-by-step explanation:

Hello!

The variable of interest is:

X: Number of people that support the candidate.

You need to calculate the sample size to estimate the population proportion of supporters given a confidence level of 99% and a margin of error of 4%

The margin of error of the confidence level for the population proportion is

d= $Z_{1-\alpha /2}$ * $\sqrt{\frac{p'(1-p')}{n} }$

From this formula you have to clear the value of n:

$\frac{d}{Z_{1-\alpha /2}}$ = $\sqrt{\frac{p'(1-p')}{n} }$

$(\frac{d}{Z_{1-\alpha /2}})^2$ = $\frac{p'(1-p')}{n}$

$n*(\frac{d}{Z_{1-\alpha /2}})^2$ = $p'(1-p')$

n= $p'(1-p') * (\frac{Z_{1-\alpha/2}}{d} )^2$

$Z_{1-\alpha/2}= Z_{0.995}= 2.586$

sample proportion "p'" since there is no sample information, nor any previous information is known, you have to consider it as the "worse case scenario" and use the value of p'= 0.50

d= 0.04

$n= p'(1-p') * (\frac{Z_{1-\alpha/2}}{d} )^2= 0.5*0.5*(\frac{2.586}{0.04} )^2= 1044.9= 1045$

She has to take a sample of 1045 people to estimate the population proportion of her supporters with a confidence level of 99% and a margin of error of 4%

I hope this helps!

4 0

3 years ago