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icang [17]
3 years ago
13

Can someone do these for me and list the number because I’m struggling rn. And I’m having a breakdown lol.

Mathematics
1 answer:
Nostrana [21]3 years ago
3 0

Answer:

Step-by-step explanation:

First remove the parentheses.

As the sign outside the second parentheses is  a + then the signs of the terms inside stay the same.

So the first one + (-3x +2) is just -3x + 2.

All the others on the left column are answered in the same way.

No. 4:

(-2x + 10 + (-8x - 1)     Just remove the parentheses, we get:

-2x + 10 - 8x - 1           (we leave out the + before the second parentheses).

= -2x - 8x + 10 - 1        

= -10x + 9

6. 8x + 8 + ( -6x - 1)

= 8x + 8 - 6x - 1

= 8x - 6x + 8 - 1

= 2x + 7.

- the other expressions on the right side column are solved in the same way.

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Find the area of the sector formed by a central angle of 45 degrees in a circle of radius 2.1
Eva8 [605]

Answer:

1.731 meters squared

Step-by-step explanation:

Look at the image for reasoning

4 0
3 years ago
2 (k - 5) + 3k = k + 6
PolarNik [594]

Answer:

k=4

Step-by-step explanation:

First, distribute the 2 on the left side

2 (k - 5) + 3k = k + 6

2*k +2*-5 +3k=k+6

2k-10+3k=k+6

Combine like terms on the left side

5k-10=k+6

Add 10 on both sides

5k=k+16

Subtract k on both sides

4k=16

Divide by 4 on both sides

k=4

Hope this helps! :)

3 0
4 years ago
Read 2 more answers
Calculate S5 for the sequence defined by {an}={1+5/2n}<br><br> 13.5<br> 23<br> 40<br> 42.5
goldfiish [28.3K]
This is an arithmetic series, where S5 means the sum of the first 5 numbers in the series. The general formula is:

Sn = (n/2)(a1 + an)

So,
a1 = 1 + 5/2(1) = 3.5
a5 = 1 + 5/2(5) = 1.5

S5 = (5/2)(3.5+1.5)
S5 = 12.5

<em>The answer should be 12.5</em>
5 0
4 years ago
Put Them in The box They Go in
pav-90 [236]

Answer:

\frac{1}{3}  \times r - 4 \\ 3 \times r - 4 \\  \frac{1}{3}  \times r + 4 \\ 3(r + 4)

5 0
3 years ago
Select the correct answer.
svp [43]

Step-by-step explanation:

option B is correct as,

10 + x = -18

→ x = -18 -10

→ x = -28

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>dear.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>take </u></em><em><u>care</u></em><em><u>!</u></em>

3 0
3 years ago
Read 2 more answers
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