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oee [108]
3 years ago
13

Find the value of x? A.45 B.22 C.82 D.56

Mathematics
2 answers:
NARA [144]3 years ago
7 0

Answer:

B

x = 22

Step-by-step explanation:

2x + 8 + 3x + 5 = 123    (external angle in a triangle = the two opposite angles)

5x = 123 - 13

5x = 110

x = 22

fgiga [73]3 years ago
6 0

Answer: B

Step-by-step explanation:

By the Exterior Angle Theorem, we know that the exterior angle is equal to the sum of the two opposite interior angles.

(2x+8)+(3x+5)=123       [combine like terms]

5x+13=123                     [subtract both sides by 13]

5x=110                           [divide both sides by 5]

x=22

Now, we know that the answer is B.

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How do I write a polynomial with nine roots? Do I just have to make sure I have x^9 or is that wrong?
Lerok [7]

Step-by-step explanation:

Yes, the degree of the of the polynomial will tell how much roots it has.

A linear equation with degree has one root so it only has 1 possible answer.

A quadratic equation with the degree of 2 has two possible roots.

So write a polynomial equationcwith the highest degree of 9.

8 0
3 years ago
A piece of rope is 70 inches long is to be cut into 2 pieces How long will each piece be if one piece is cut four times longer t
liq [111]

The long piece is 4 times the length of the short piece.

Short piece = 1 time
Long piece  = 4 times
--------------------------------
Full rope  =  5 times

                                   5 times = 70 inches

Divide each side by 5 :    1 time = 14 inches

<em>Short piece</em> = 1 time = <em>14 inches</em>

<em>Long piece</em> = 4 times = 4 x 14inches = <em>56 inches</em>


<u>Check:</u>

Ratio of long to short  =  56inches / 14inches  = <u>4</u>

Sum of both pieces =  (56 + 14)  =  <u>70 inches</u>

                                                                         yay !


5 0
3 years ago
Name
ivann1987 [24]

Answer:

6. 10^3   ten to the third power

7. 10^5  ten to the fifth power

8.  not sure

10. 60

19. 20

11-13: not sure

and i can't understand the rest

Step-by-step explanation:

7 0
4 years ago
How many times does 12 go inside of 384
topjm [15]
If you divide 12 by 384 and put it in a calculator you get 32.this means 12 goes 32 times in 384
7 0
3 years ago
Solve A=1/2bh for b when A=126 and h=18
Slav-nsk [51]

Answer:14

Step-by-step explanation:First, you can plug in the numbers, so the equation would look like 126=1/2b(18). Since theres 1/2, 1/2 of 18 is 9, so it would be 126=9b. 126/9=14

3 0
3 years ago
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