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Marina CMI [18]
3 years ago
15

(5x² – 8x + 1) + (2x² - 4x – 11)

Mathematics
1 answer:
djverab [1.8K]3 years ago
7 0

Answer:

7x²-12x-10

Step-by-step explanation:

(5x²-8x+1) + (2x²-4x-11)

combine like terms

7x²-12x-10

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Drag expressions to complete each equation.
Ainat [17]
A^-b is the same as 1/a^b.

When there is a negative power, place the number and power over 1.

a^b/a^c = a^(b-c).

c is a negative power, because it is being divided, and is underneath b, which is a positive (and so it stays in the numerator).

a^c/b^c = (a/b)^c

Inside this one, the power of c is distributed to all numbers inside the parenthesis, in this case a and b.


hope this helps
3 0
3 years ago
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I NEED SOMEONE TO PLS ANSWER THIS I WILL MARK BRAINLYEST IF U ANSWER IT CORRECTLY JUST PLEASE HELP
scoundrel [369]
1. 24
2.-40
3.-8a-8b
4. 10b+40
5. -2p-14

I believe these are right, hope this helps!!
8 0
3 years ago
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Lesechka [4]
1. 6.73 x 10^6
2. 1.33 x 10^4
3.9.77 x 10^22
4. 3.84 x 10^5
The rest i didn’t understand what where you trying to say
7 0
3 years ago
Plz help! anybody. i'll mark brainliest 20 points!!!!
lisabon 2012 [21]

(1)    Snow fall in last week = 3 \frac{1}{2} inches

Snow fall in today= 5 \frac{3}{4} inches

Let us first change mixed fraction to improper fraction.

\begin{aligned}&3 \frac{1}{2}=\frac{7}{2}\\&5 \frac{3}{4}=\frac{23}{4}\end{aligned}

Now, make the denominators same.

3 \frac{1}{2}=\frac{7}{2}=\frac{7 \times 2}{2 \times 2}=\frac{14}{4} ,       5 \frac{3}{4}=\frac{23}{4}

Now, find the difference between 14/4 and 23/4.

\frac{23}{4}-\frac{14}{4}=\frac{9}{4}=2 \frac{1}{4}

So, compared to last week 2 \frac{1}{4} more inches of snow fell today.

(2)    Given three times a number, minus nine, equals six times six, divided by four.

Let a number be X.

3X – 9 = 6 × 6/4

(3)  To solve the equation:

3X – 9 = 6 × 6/4

3X – 9 = 36/4

3X – 9 = 9

3X = 18

X = 6

5 0
3 years ago
Which coordinate lies in the solution set for
tatyana61 [14]

Answer:

Step-by-step explanation:

to do this, u would just sub ur answer choices into the inequalities and see what is true. Keeping in mind, that ur point has to satisfy both inequalities for it to be a solution.

2x + y < 12...subbing in (3,3)        3x - 2y > 2...subbing in (3,3)

2(3) + 3 < 12                                   3(3) - 2(3) > 2

6 + 3 < 12                                        9 - 6 > 2

9 < 12....true                                       3 > 2....true

(3,3) lies in the solution set <==

7 0
3 years ago
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