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ICE Princess25 [194]
3 years ago
15

Match the simplified version of the number given. Note: You do not need to find the opposite for the number, just the simplified

number. Use the following clues:
The opposite of a positive number is a negative number and vice versa.
The opposite of the opposite of a positive number is a positive number.
The opposite of the opposite of a negative number is a negative number.
1. -(-75)
-20
2. -(87)
-75
3. -(20)
75
4. -(-20)
-12
5. -(12)
12
6. -(-12)
20
7. -(75)
-87
8. -(-(87)
87
Mathematics
1 answer:
mart [117]3 years ago
8 0

The matching forms of the numbers are as represented below upon evaluation;

  1. -(-75) = 75
  2. -(87) = -87
  3. -(20) = -20
  4. -(-20) = 20
  5. -(12) = -12
  6. -(-12) = 12
  7. -(75) = -75
  8. -(-87) = 87

<h3>Opening up parenthesis</h3>

The given numbers can be simplified by opening up the parenthesis as indicated above in which case,

  • The product of 2 negatives equals a positive sign

  • The product of ,a negative and positive equals negative.

Read more on parenthesis;

brainly.com/question/25935638

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inn [45]

Answer:

<h2>B, D, F</h2>

Step-by-step explanation:

Use\\\\a^n\cdot a^m=a^{n+m}\\\\\dfrac{a^n}{b^n}=\left(\dfrac{a}{b}\right)^n\\=================\\A.\ 3^{x+1}=3^x\cdot 3\neq3^x\\\\B.\ 3\cdot3^{x-1}=3\cdot3^x\cdot3^{-1}=(3^1\cdot3^{-1})\cdot3^x=3^{1+(-1)}\cdot3^x=3^0\cdot3^x=1\cdot3^x=3^x\\\\C.\ \dfrac{18^x}{3}\neq3^x\\\\D.\ \left(\dfrac{18}{6}\right)^x=(3)^x=3^x\\\\E.\ x^3\neq3^x\\\\F.\ \dfrac{18^x}{6^x}=\left(\dfrac{18}{6}\right)^x=(3)^x=3^x

8 0
4 years ago
what is the slope of the line through (1,0)(1,0)left parenthesis, 1, comma, 0, right parenthesis and (3,8)(3,8)
77julia77 [94]

The slope of the line passing through (1 , 0) and (3 , 8) is 4.

Slope, commonly represented by the letter m, is a value that describes the steepness and direction of a line. The slope of a line is also called its gradient or rate of change.

It is the vertical change in y divided by the horizontal change in x, sometimes called rise over run. The slope formula uses two points, (x_{1}, y_{1} ) and (x_{2}, y_{2} ), to calculate the change in y over the change in x.

m=\frac{y_{2}-y_{1}  }{x_{2}-x_{1} }     where

x_{1} = 1

y_{1} = 0

x_{2} = 3

y_{2} = 8

Substituting the values,

m=\frac{y_{2}-y_{1}  }{x_{2}-x_{1} } =\frac{8-0}{3-1} =\frac{8}{2}=4

Hence, he slope of the line passing through (1 , 0) and (3 , 8) is 4.

For more example on slope of line, visit brainly.com/question/3493733.

#SPJ4

7 0
2 years ago
Select all figures for which there exists a direction such that all cross sections taken at that direction are congruent.
dimulka [17.4K]

Answer:

  • Rectangular Prism
  • Cube
  • Cylinder

Step-by-step explanation:

I know because I just did it on an assignement and it said these were the right answers.

4 0
4 years ago
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 280 days a
a_sh-v [17]
First, find the z-score:

z = (value - mean) / sdev
  = (275 - 280) / 15
  = - 0.33

In order to use a standard normal table, we need a positive z-score:
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Looking at the table, we find P(z < 0.33) = 0.6293

Therefore:
P(z < -0.33) = 1 - 0.6293 = 0.3707

Hence, you have a probability of about 37% <span>that a randomly selected pregnancy lasts less than 275 days.</span>
4 0
3 years ago
20,000 dollars at 10% compound annually for 20 years (20 payments of 1.1)
Firdavs [7]

That’s the same question I’m going to ask.

6 0
3 years ago
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