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tester [92]
2 years ago
8

PLEASE HELP

Mathematics
2 answers:
Inessa05 [86]2 years ago
6 0

Answer:

Indira should have written the equations Negative 6 + a = negative 3 and 1 + b = negative 2 in Step 2.

viktelen [127]2 years ago
4 0

Answer:

The correct answer is B

Step-by-step explanation:

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If the radius of a circle is 111, what is the diameter?
yan [13]

Answer:

d=222

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
(7)(8)(9)<br><br> Geometry<br><br> Check Ans<br><br> 7) s = 15<br> 8) y = 64 x = 99<br> 9) 96
Katyanochek1 [597]
Problem 7: Correct
Problem 8: Correct
Problem 9: Correct

The steps are below if you are curious

===========================================================================================

Problem 7

S = 180*(n-2)
2340 = 180*(n-2)
2340/180 = n-2
13 = n-2
n-2 = 13
n = 13+2
n = 15

I'm using n in place of lowercase s, but the idea is the same. If anything, it is better to use n for the number of sides since S already stands for the sum of the interior angles. I'm not sure why your teacher decided to swap things like that.

===========================================================================================

Problem 8

First find y
y+116 = 180
y+116-116 = 180-116
y = 64

which is then used to find x. The quadrilateral angles add up to 180*(n-2) = 180*(4-2) = 360 degrees
Add up the 4 angles, set the sum equal to 360, solve for x

x+y+125+72 = 360
x+64+125+72 = 360 ... substitution (plug in y = 64)
x+261 = 360
x+261-261 = 360-261
x = 99

===========================================================================================

Problem 9

With any polygon, the sum of the exterior angles is always 360 degrees

The first two exterior angles add to 264. The missing exterior angle is x
x+264 = 360
x+264-264 = 360-264
x = 96

6 0
3 years ago
Use a formula to find the surface area of the cylinder . Use 3.14 for π.
Arlecino [84]

Answer:

I am so sorry

Step-by-step explanation:

I dont really know what it is but I think it is 21.98 you do 7 times 3.14

5 0
3 years ago
A school theater can sell 87 tickets for show. if 9 have been sold how many tickets are still left to be sold
shutvik [7]

Answer:

78 tickets left to be sold

Step-by-step explanation:

87-9=78

8 0
3 years ago
Read 2 more answers
What is the solution of the system?
prisoha [69]
X=-4y+2
3(-4y+2)+2y=11
-12y+6+2y=11
-10y+6=11
-6=-6
-10y=5
y=-1/2

3x+2(-1/2)=11
3x-1=11
+1=+1
3x=12
x=4

Solution:(-1/2,4)
8 0
2 years ago
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