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4 years ago

What is 4 times 12 (48) gets a brainliest. for fun! :D

Mathematics

2 answers:

lozanna [386]4 years ago

7 0

Answer:

Step-by-step explanation:

it is 12 + 12+ 12+ 12=48

or 12 groups of 4=48

or just plain and simply 12*4

plz mark my answer brainliest

Genrish500 [490]4 years ago

4 0

Answer:

Step-by-step explanation:

4 times 12 can be easily written as 12 4 times!

12 + 12 + 12 + 12

12 + 12 is 24; 24 + 12 is 36; 36 + 12 is 48

Fun times :)

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Order them from least, to greatest value.

ladessa [460]

-4
0.9
sqrt 85 = 9.219
11
4(pi) = 4(3.14) = 12.56

least to greatest : -4, 0.9, sqrt 85, 11, 4(pi)

lol...there already in order...just like u posted them

6 0

4 years ago

Sarah had (x) dollars. Rachel had four times as much as Sarah. Addie had 10 dollars less than Sarah. How much money did they hav

Oduvanchick [21]

Answer:

5X - 10

Step-by-step explanation:

Sarah had X

Then, Rachael had 4X

And, Addie had X - 10

Total dollar = X + 4X + X - 10

= 5X - 10

6 0

3 years ago

What’s the answer to <br> –4x – 6 = –2x + 8?

miv72 [106K]

Answer:

-7

Step-by-step explanation:

-4x - 6 = -2x + 8

-2x = 14

x = -7

8 0

3 years ago

3. university dean of students wishes to estimate the average number of hours students spend doing homework per week. The standa

gregori [183]

Answer:

A sample of 17 must be selected.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.96}{2} = 0.02$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.02 = 0.98$ , so Z = 2.054.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

The standard deviation from a previous study is 4 hours.

This means that $\sigma = 4$

How large a sample must be selected if he wants to be 96% confident of finding whether the true mean differs from the sample mean by 2 hours?

A sample of n is required.

n is found for M = 2. So

$M = z\frac{\sigma}{\sqrt{n}}$

$2 = 2.054\frac{4}{\sqrt{n}}$

$2\sqrt{n} = 2.054*4$

Simplifying both sides by 2:

$\sqrt{n} = 2.054*2$

$(\sqrt{n})^2 = (2.054*2)^2$

$n = 16.88$

Rounding up:

A sample of 17 must be selected.

8 0

3 years ago

If you were to add 5 to my number and then divide by 4, you would get 7

Norma-Jean [14]

Let's make an equation. T will be the number.
(T+5)/4=7
Let's multiply both sides by 4 to get T by itself.
T+5=28
Subtract 5 from both sides.
T=23
Your number is 23.

3 0

3 years ago

Read 2 more answers