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2 years ago

-8+6b-9b+2 I need to simplify and find the answer

Mathematics

2 answers:

erastova [34]2 years ago

5 0

Answer: - 3b - 6

Step-by-step explanation:

1. Add the numbers

-8+6b-9b+2

-6+6b-9b

2.Combine like terms

-6+6b-9b

-6-3b

3.Rearrange terms

-6-3b

-3b-6

Answer: -3b-6

Tcecarenko [31]2 years ago

4 0

Answer:

answer of this question is -6-3b

Step-by-step explanation:

taking common -3 then 2+b will left so this is also answer of this question

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The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard

laiz [17]

Answer:

option B.

About 16% of the books have fewer than 150 pages

Step-by-step explanation:

Since we are dealing with a normal distribution

68.27% of the values will fall in the range with the standard deviation

(180-30 , 180+30) = (150, 210)

Approximately 15.86% of the values will be higher than 210

and the rest 15.86% will be lower than 150

So the correct answer is option B.

About 16% of the books have fewer than 150 pages

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2 years ago

Which of the following integers is a perfect square? A 36 B 48 C 44 D 32

Anika [276]

Answer:

Step-by-step explanation:

since 36=6² and the other option is not square of integer

5 0

2 years ago

Read 2 more answers

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.

My name is Ann [436]

$x = 2 \\ y = 7$

is the answer to:

$y = 11 - 2x \\ 4x - 3y = - 13$

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$x = 5 \\ y = 2$

is the answer to:

$2x + y = 12 \\ x = 9 - 2y$

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$x = 3 \\ y = 5$

is the answer to:

$2x + y = 11 \\ x - 2y = - 7$

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$x = 7 \\ y = 3$

is the answer to:

$x + 3y = 16 \\ 2x - y = 11$

3 0

2 years ago

If angle p is right angle and angle p and angle q are supplementary then what is angle q

Schach [20]

Right angle (angle p) = 90°
supplementary means total equals 180°
so 90° + q = 180°
subtract 90° from both sides
q = 90°

8 0

3 years ago

Help!!!!! Not the top one by the way..!

OverLord2011 [107]

Answer:

$\large\boxed{x=-3\ and\ y=-11\to(-3,\ -11)}$

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}-6x+y=7\\3x-y=2\end{array}\right}\qquad\text{add both sides of the equations}\\\\.\qquad-3x=9\qquad\text{divide both sides by (-3)}\\.\qquad\boxed{x=-3}\\\\\text{Put the value of x to the first equation:}\\\\-6(-3)+y=7\\18+y=7\qquad\text{subtract 18 from both sides}\\\boxed{y=-11}$

3 0

2 years ago