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3 years ago

Is -43 a rational number?

Mathematics

1 answer:

Alex Ar [27]3 years ago

7 0

Answer:
Yes, because -43 can be turned into a fraction. Ex. -43/1.

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Help me find that greatest common factor please. Thanks!

sweet [91]

The gcf of -18m and 27 is -9 if not then positive 9, but if you want me to also solve the equation its -18m + 27 is -9(2m - 3) i hope it helps!

3 0

2 years ago

You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estim

Alenkasestr [34]

Answer:

n = 400

Step-by-step explanation:

The formula for the error in our estimate is given by:

Standard Error : √ ( p(1-p)/ n)

Error = SE = Zα/2 √ ( p(1-p)/ n) where

Zα/2= critical value for 95% confidence level = 1.96

and we know our error is 3.5 %

But we do not the sample proportion p. Then what we can do is give an estimate of p in the absence of any other information.

In this case we will use p= 0.5 which is the value that maximizes the expression for the standard error :

if p = 0.8 then SE= 0.040

p = 0.3 then SE =0.036

p = 0.1 then SE = 0.030

p = 0.5 then SE = 0.050

Substituting

3.5/100 = 1.96 x √ (( 0.5 x 0.5 ) /n )

3.5/ (100 x 1.96 x 0.5 ) = 1/ √n

0.0357 = 1 /√n

n = 20²

n = 400

3 0

3 years ago

Pls help meeeeeeeeeeee

natka813 [3]

<h2>Answer:</h2>

<h3>1) $\frac{1}{2}$ </h3><h3>3) $\frac{1}{6}$ </h3><h3>5) $\frac{2}{3}$ </h3><h3 /><h2>Step-by-Step Explanation:</h2><h3 />

1.<em> </em>Find the probability of rolling less than a four.

<u>Probability Outcomes</u> = 1, 2, 3, 4, 5, 6

<u>Outcomes lower than four</u> = 1, 2, 3

Then to answer it you need the probability in the form of a fraction.

$\frac{3}{6}$ simplifies into $\frac{1}{2}$

2. Find the probability of rolling an even prime number.

<u>Probability Outcomes</u> = 1, 2, 3, 4, 5, 6

<u>Prime Numbers Through 1-6</u> = 2, 3, 5

<u>Even Prime numbers Through 1-6</u> = 2

So the probability in the form of a fraction.

3. Find the probability of rolling factors of 20.

<u>Probability Outcomes</u> = 1, 2, 3, 4, 5, 6

<u>Factors of 20 Through 1-6</u> = 1, 2, 4, 5

So probabilty in the form of a fraction.

$\frac{4}{6}$ simplifies into $\frac{2}{3}$

<h3>That's all! I hope this helps! If you ever need my help, just friend me and message me!</h3>

8 0

3 years ago

Read 2 more answers

Find the slope of the line through (-9, -19) and (-2,-5),

son4ous [18]

Answer:

Slope is 2

Step-by-step explanation:

(-9, -19) and (-2,-5)

m=(y2-y1)/(x2-x1)

m=( -5 + 19)/( -2 + 9)

m = (14)/(7)

m = 2

5 0

3 years ago

Read 2 more answers

[[[click on the image to make bigger]]]<br><br>I really need questions 2 and 4 for this!! please

GaryK [48]

Answer:

It equals pizza 3’5.42 inch

Step-by-step explanation:

6 0

3 years ago