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dolphi86 [110]
3 years ago
5

PLEASE HELP!!!!! WILL MARK BRAINLIEST AND THANK YOU!!!!

Mathematics
1 answer:
Alecsey [184]3 years ago
7 0

Answer:

x = 14

Step-by-step explanation:

In order to solve this, we need to know that, because the two angles are on different sides of two parallel lines, both of the angles added together equal 180. From that, we can solve.

7x - 1 + 6x - 1 = 180

13x = 182

x = 14

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Which graph represents the given equation?
Alchen [17]

9514 1404 393

Answer:

  A

Step-by-step explanation:

The axis of symmetry of quadratic ax²+bx+c is x=-b/(2a). For the given equation, the axis of symmetry is ...

  x = -4/(2(3/2)) = -4/3

The only graph with its vertex at x=-4/3 is graph A.

_____

<em>Additional comment</em>

You can also make the correct choice by evaluating the equation at a couple of different values of x. Convenient ones are x= -1, or 0, or +1. The value at x=0 is the y-intercept, (0, -2), which seems to be a point on all of the graphs. The value at x=1 is 3/2+4-2 = 3.5, which looks like it is only seen on graph A.

7 0
3 years ago
Suppose the same quantity is measured but with a more precise method giving an average and standard deviation of 15.0 ± 2.5. how
abruzzese [7]

To solve this, we use the z test.

The formula:

z = (x – u) / s

where x is sample value = 20, u is the mean = 15, and s is the standard deviation = 2.5

z = (20 – 15) / 2.5

z = 2

Since we are looking for values greater than 20, this is right tailed test. We use the standard distribution tables to find for P.

P = 0.0228

 

Therefore:

number of students = 100 * 0.0228 = 2.28

 

<span>2 to 3 students will get greater than 20 measurement</span>

7 0
3 years ago
10 +(-96) + (-14) +8=​
Ne4ueva [31]

Answer:

100

Step-by-step explanation:

4 0
3 years ago
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I've never even seen a box and whiskers plot before!! Should be pretty straight forward though. Thanks!
alisha [4.7K]
For a box and whispers plot, each section represents 25% of the data. Therefore, the area from 85-99 represents 25% of the data.

25% of 24 students= 6 students
Final answer: 6 students
7 0
3 years ago
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A library has 15,000 fiction books and 8,800 nonfiction books.
algol [13]

Answer:3360

Step-by-step explanation:

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