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jarptica [38.1K]
3 years ago
8

Of the 600 people at a music festival, 420 had attended the previous year. How many people out of 100 had attended the previous

year?
A: 60
B: 42
C: 70
D: 80

I think it is 60
Mathematics
2 answers:
Alex777 [14]3 years ago
8 0
100 * 420 / 600 = 70

answer: 70 people <span>out of 100 had attended the previous year</span>
Gnoma [55]3 years ago
6 0
100*420/600=420/6=70
The answer is C:70.
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What does it mean when there are variables on top of each other in parentheses in statistics?
Ilya [14]
It's a combination:
\left(  {{n} \atop {k}}\right)\equiv C(n,k)=\dfrac{n!}{(n-k)!k!}
4 0
2 years ago
What is the value of z?
UNO [17]

Answer:

z =23

Step-by-step explanation:

The three angles in a triangle add to 180 degrees.

62+95+z = 180

Combine like terms

157 +z = 180

Subtract 157 from each side

157-157 +z = 180-157

z =23

3 0
3 years ago
What are the domain and range of this function?
RUDIKE [14]
<h3>Answer: Choice D</h3>
  • Domain: all real numbers
  • Range: y \ge 1

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

Explanation:

The domain is the set of allowed x inputs. We can plug in any x value we want as the graph stretches on forever to the left and to the right. There aren't any division by zero errors or any issues like that to worry about, so that's why we don't kick out any x values from the domain.

The domain being all real numbers translates to the interval notation (-\infty, \infty) which is basically saying -\infty < x < \infty

-----------------------------------

The range is the set of y outputs possible. The graph shows that y = 1 is the smallest y output, so y = 1 or y can be greater than this.

In short, y \ge 1 is the range which converts to the interval notation [1, \infty) which is the same as saying 1 \le y < \infty

-----------------------------------

Extra info:

The equation of this absolute value function is y = |x|+1

8 0
2 years ago
Simplify the expression below <br><img src="https://tex.z-dn.net/?f=7x%20%7B%20-%20%7D%5E%7B2%7D%20%20-%204z%20%2B%208x%20%7B%20
Alisiya [41]

Answer: -9z + 15/x^2

The correct answer is -9z + 15/x^2 when simplified

<em>Hope this helps =)</em>

3 0
2 years ago
DeAndre
Mice21 [21]

Answer:

25 ounces of water

6 0
2 years ago
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