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4 years ago

12

What Is 1,270 rounded to the nearest hundred?

1 answer:

ankoles [38]4 years ago

5 0

It would be 1,300. When rounding, you'd need to look at the number to the right of the place you're rounding to. In this case, you're rounding to the hundreds place (the 2), so you look at the number to the right (7). To know if you round up or down use this:

Round down= 0-4
Round up= 5-9

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......................,.,................

Alex787 [66]

a=6, b=2

Step-by-step explanation:

Use simplification into substitution
$\frac{a}{3} =1+\frac{2}{b}$

$a=3(1+\frac{2}{b})$

$a=3+\frac{6}{b}$

We can now plug this value of <em>a</em> into the second equation.

$\frac{3+\frac{6}{b} }{4} +\frac{3}{b} =3$

Get rid of fractions in the numerators and/or denominators

$\frac{3b+6}{4b} +\frac{3}{b} =3$

Then we can match the denominators

$\frac{3b+6}{4b} +\frac{12}{4b} =3$

Combine

$\frac{3b+18}{4b} =3$

Divide both sides by three

$\frac{b+6}{4b} =1$

Get rid of fractions

$b+6=4b$

Single out <em>b</em>

$6=3b$

$b=2$

Now we can plug it into the equation

$\frac{a}{3} -\frac{2}{2} =1$

$\frac{a}{3} =2$

$a=6$

Now we can check it;

$\frac{6}{3} -\frac{2}{2} =1$

↑CORRECT

$\frac{6}{4} +\frac{3}{2} =3$

↑CORRECT

4 0

2 years ago

How is the series 8 + 14 + 20+ ... + 296 represented in summation notation?

drek231 [11]

Answer: 26

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Show your work<br> 2) Is(-3,-7) a solution to<br> 4x – 8y < 24<br> Show your work

asambeis [7]

Answer: false, 44 is not less than 24

Step-by-step explanation:

Substitute-3 for x and -7 for y.

4(-3)-8(-7)<24

-12+56<24

44<24

3 0

4 years ago

Here is a scale drawing of a swimming pool where 1 cm represents 1 m. The dimensions of the drawing are 6.5 cm by 13 cm.

DochEvi [55]

Answer:

1cm

Step-by-step explanation:

3 0

3 years ago

When finding the margin of error for the mean of a normally distributed population from a sample, what is Alpha, assuming a conf

MArishka [77]

The value of alpha is 0.26, assuming a confidence level of 74%.

<h3>What is the margin of error?</h3>

The significance level α is the probability of making the wrong decision when the null hypothesis is true.

Alpha levels which is also called as significance levels are used in hypothesis tests.

Given

When finding the margin of error for the mean of a normally distributed population from a sample.

The confidence interval = 74% = 0.74.

The value of the alpha is given by;

$\rm \alpha =1- Confidence \ interval$

Substitute all the values in the formula

$\rm \alpha =1- Confidence \ interval\\\\\alpha=1-0.74\\\\\alpha=0.26$

Hence, the value of alpha is 0.26, assuming a confidence level of 74%.

To know more about confidence interval click the link given below.

brainly.com/question/26725727

8 0

3 years ago