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8090 [49]
3 years ago
15

What's 20 + (-6 x 4) - 2 ?​

Mathematics
2 answers:
VMariaS [17]3 years ago
6 0

Answer:

-6

Step-by-step explanation:

First, start with what comes with the brackets.

(-6 x 4) = -24

20 + -  24 - 2 (Positive and negative makes negative)

20 - 24 - 2 =

-4 - 2 = -6

Voila, -6

Hope this actually makes a difference in someone else's life

Zepler [3.9K]3 years ago
3 0

Answer:

-6

Step-by-step explanation:

First multiply -6 and 4 which is -24.

Then add 20 and -24 which is -4

Then subtract -4 and -2

Which is -6.

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Find the volume of a rectangular prism with a length of 9 cm, a height of 13 cm, and a width of 7 cm.
Sati [7]

Answer:

819 cm³

Step-by-step explanation:

V=L·H·W

V=9·13·7

V=819 cm³

4 0
3 years ago
Read 2 more answers
Dr. Ashby is studying the heart rate of adult men. Preliminary data suggests that the standard deviation of heart rates for adul
jok3333 [9.3K]

Answer:

n=42 adult men

Step-by-step explanation:

-The minimum sample size to get a desired margin of error, E is calculated using the formula:

n\geq( \frac{z\sigma}{E})^2

-Given that \sigma=7.5, \ \ E=3\ , \ z_{0.005}=2.58, we can substitute to solve for n in the above formula:

n\geq (\frac{z\sigma}{E})^2\\\\\therefore n=(\frac{z_{\alpha/2}\sigma}{E})^2\\\\=(\frac{2.58\times7.5}{3})^2\\\\=41.6025\approx42

Hence, the desired minimum sample size, n is 42 adult men.

4 0
3 years ago
How do you solve: 2(5+r)<br><br><br>A :7+r<br><br>B: 10+2r<br><br>C: 12r<br><br>D: 7+2r
maksim [4K]

Answer:

i think it´s b

Step-by-step explanation:

3 0
3 years ago
Identify the number that does not belong with the other three. Explain your reasoning.
mojhsa [17]

Answer:

To identify which integer does not belong with the rest, we must first evaluate each.

Step-by-step explanation:

  • [25.6...] is already evaluated. Therefore, let's move on to Integer <em>b: </em>\sqrt{x}, where is <em>x </em>is 48.

  • 48 = 2 * 24--> 2 * 12--> 2 * 6--> 2 * 3
  • √48 = \sqrt{2} * 2 * 2 * 2 * 3
  • We have 1 perfect sqaure: \sqrt{2} * 2
  • When we multiply, we receive 2.
  • Therefore, 2 * \sqrt{2 * 3}

  • When -51/2 is relatively prime, we receive -25 1/2

  • Finally, the last integer is already simplified.

Based on these results, you may determine the number that does not belong with the other three, whether than is through means of irrationability, value, absolte value, or whatever other means you decide.

6 0
3 years ago
I don't know number 10
yulyashka [42]
78500 is ur answer : ) : ) : )
3 0
3 years ago
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