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Gemiola [76]
3 years ago
5

How do we solve these type of questions

Mathematics
1 answer:
svetoff [14.1K]3 years ago
4 0
In the second equation it is actually going on to be +2x^2 -4x-2 then your going to combine like terms. So it will be 5x^2-10. Because he 4x’s are going to eliminate each other.
You might be interested in
Which of the following mathematical statements shows "the quotient of a number and six is eight”?
rosijanka [135]
N ÷ 6 = 8
hope this helps good luck! =]
6 0
2 years ago
Is -8-2(3+2n)+7n equivalent to -30-13n. Explain why or why not.
seropon [69]

No, -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

Step-by-step explanation:

Let us revise the operation of the negative and positive numbers

  • (-) + (-) = (-)
  • (-) × (-) = (+)
  • (-) + (+) = the sign of greatest [(-) if the greatest is (-) or (+) if the greatest is (+)]
  • (-) × (+) = (-)
  • (-) - (+) = (-)
  • (+) - (-) = (+)

∵ The expression is -8 - 2(3 + 2n) + 7n

- Simplify it

∵ 2(3 + 2n) = 2(3) + 2(2n) = 6 + 4n

∴ -8 - 2(3 + 2n) + 7n = -8 - (6 + 4n) + 7n

- Multiply the bracket by (-)

∴ -8 - (6 + 4n) + 7n = -8 - 6 - 4n + 7n

- Add the like terms

∴ -8 - (6 + 4n) + 7n = (-8 - 6) - 4n + 7n

∴ -8 - (6 + 4n) + 7n = -14 + 3n

∴ -8 - 2(3 + 2n) + 7n is equivalent to -14 + 3n

∵ -14 + 3n ≠ -30 - 13n

∴ -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

No, -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

Learn more:

You can learn more about the directed numbers in brainly.com/question/10364988

#LearnwithBrainly

8 0
3 years ago
Why have I been blocked?
Ivanshal [37]
I’m not sure blocked from what
8 0
2 years ago
Find the common ratio of the geometric sequence -18,126,-882
gtnhenbr [62]

Answer:

r = - 7

Step-by-step explanation:

The common ratio r is the ratio of a term to the preceding term, that is

r = 126 ÷ - 18 = - 882 ÷ 126 = - 7

5 0
3 years ago
Soft drinks are sold in aluminum cans that measure 6 inches in height and 2 inches in diameter. How many cubic inches of drink a
pychu [463]

Answer:

113.04 cubic inches.

Step-by-step explanation:

We have been given that soft drinks are sold in aluminum cans that measure 6 inches in height and 2 inches in diameter.

To find the amount of drink contained in 6 cans, we will find the volume of 1 can using volume of cylinder formula.

\text{Volume of cylinder}=\pi r^2h, where,

r = Radius of cylinder,

h = Height of cylinder.

First of let us divide diameter of given cylinder by 2 to get the radius of our cylinder as diameter is 2 times the radius.

\text{Radius}=\frac{2\text{ inches}}{2}

\text{Radius}=1\text{ inch}

Upon substituting our given values in volume formula we will get,

\text{Volume of can}=\pi*\text{(1 inch)}^2*\text{6 inch}  

\text{Volume of can}=3.14*\text{(1 inch)}^2*\text{6 inch}

\text{Volume of can}=18.84\text{ inch}^3

Therefore, one can of soft drink contains 18.84 cubic inches of drink.

To find the amount of drink contained in 6 cans we will multiply volume of 1 can by 6.

\text{Volume of 6 cans}=6\times 18.84\text{ inch}^3

\text{Volume of 6 cans}=113.04\text{ inch}^3  

Therefore, 6 cans of soft drink contain 113.04 cubic inches of drink.

4 0
2 years ago
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