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Masja [62]
3 years ago
8

What is the value of y

Mathematics
2 answers:
Alex_Xolod [135]3 years ago
7 0
If you isolate y from the equation y+(y-12)+56=180 (adding all the angles together to make 180), you would get 68 degrees
Cloud [144]3 years ago
3 0
Sum of interior angles in a triangle = 180
so
y + y - 12 + 56 = 180
2y + 44 = 180
2y = 136
y = 68

Answer
C. 68°
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If x=-5 what is the value of x^2-1/x+1? A. 6 b. -4 c. 4 d. 5 4/5 e. 19 <br> need answers asap
xxTIMURxx [149]

Answer:

The answer is -6 but its not in the option

Step-by-step explanation:

\frac{ {x}^{2} - 1 }{ x  + 1}

Let x = -5

[(-5)²-1]/(-5+1)

= (25-1)/(-4)

= 24/-4

= -6

4 0
3 years ago
CORRECT ANSWERS ONLY 50+ POINTS!!!!!!
IRINA_888 [86]

Answer:

Out of all the choices given A. seems to fit best.

The initial value is 500 so the beginning should be A(n) = 500

The rate of increase is 4% so you would put that into decimal form of 0.04

Then you plug in 0.04 into (n - 1) and since we know that it is increasing you would put (1 + 0.04)

And the question asked to find the account's balance at the beginning of year 5 so plug 5 into n in the equation

A(n) = 500(1 + 1.04)^5 = 608.33

Hope this helps!



8 0
3 years ago
Read 2 more answers
Several factors are involved in the creation of a confidence interval. Among them are the sample size, the level of confidence,
Lynna [10]

Answer:

  1. A
  2. A
  3. C
  4. B

Step-by-step explanation:

1) The statement is true. A larger margin of error creates a wider confidence interval, which is more likely to contain the population parameter.

2) The statement is false. A larger sample size decreases the standard error of the sample proportion, which decreases the margin of error.

3)  The statement is true. A smaller sample size increases the standard error of the sample proportion, which, for a fixed margin of error, decreases the critical value, z*.

4)  The statement is true. One can see from the margin of error formula that the margin of error is inversely proportional to the square root of n.

4 0
3 years ago
Someone please help me
barxatty [35]

14^2 + 8^2 = AB^2

196 + 64 = AB^2

260 = AB^2

AB = sqrt(260)

AB = 16.12

answer is D


Please mark brainliest

7 0
3 years ago
which of the following statements best describes midpoint of a line segment? 1. point at end of line segments 2. a point halfway
BARSIC [14]
<h2>Hello!</h2>

The answer is:

2. A point halfway between the endpoints of a line segment.

<h2>Why?</h2>

The midpoint of a line segment, is a point that divides the line segment into two equal length sides, no matter the length of the segment, the midpoint will always cut the segment into two equal length sides

The midpoint is an ordinary point located in the middle of the line segment. The x-coordinate of the midpoint is halfway between the x-coordinates of the beginning and the end of the segment. The y-coordinate of the midpoint is halfway between the y-coordinates of the beginning and the end of the segment.

Hence, the correct option is:

2. A point halfway between the endpoints of a line segment.

Have a nice day!

8 0
3 years ago
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