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Eva8 [605]
3 years ago
12

Staff from the school newspaper is taking a poll to find out how students in the school are going to vote in the upcoming electi

on for class president. Which group would best represent a sample population ?
Mathematics
2 answers:
omeli [17]3 years ago
5 0

C. Every tenth student in the main hallway between class.

Schach [20]3 years ago
4 0

what are the options

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If mZDCB = 140°, then mZACD = [?]° !!!PLS HELP I WILL MARK BRAINLIEST !!!
Readme [11.4K]

Answer:

40°

Step-by-step explanation:

  • m\angle DCB +m\angle ACD = 180\degree (Linear pair angles)

  • \implies 140\degree +m\angle ACD = 180\degree

  • \implies m\angle ACD = 180\degree-140\degree

  • \implies m\angle ACD = 40\degree
5 0
2 years ago
What are the solutions to the following system of equations? y=x^2+12x+30 and 8x-y=10
Ierofanga [76]
Note that the 2nd equation can be re-written as y=8x-10.
According to the second equation, y=x^2+12x+30.
Equate these two equations to eliminate y:

8x-10 = x^2+12x+30

Group all terms together on the right side.  To do this, add -8x+10 to both sides.  Then 0 = x^2 +4x +40.  You must now solve this quadratic equation for x, if possible.  I found that this equation has NO REAL SOLUTIONS, so we must conclude that the given system of equations has NO REAL SOLUTIONS.

If you have a graphing calculator, please graph 8x-10  and  x^2+12x+30 on the same screen.  You will see two separate graphs that do NOT intersect.  This is another way in which to see / conclude that there is NO REAL SOLUTION to this system of equations.
6 0
4 years ago
Easy question - giving brainly is correct and work is shown!
Ymorist [56]

Answer:

the answer is 102 pls mark brainlest

4 0
3 years ago
The cost C (in dollars) for beads to make bracelets is C=4x+180, where x is the number of bracelets. Each bracelet sells for 34$
yanalaym [24]
For the answer to the question above asking to <span>write an equation for the revenue R in terms of the number of bracelets?
The answer to the question above is </span>R = 34x - (4x + 180)
I hope my answer helped you. Have a nice day!
3 0
4 years ago
Five times the sum of a number and 3 is the same as 3 multiplied by 1 less than twice the number ​
Aneli [31]

Answer:-2

Step-by-step explanation:

(n + 3) 5 = 3 x 1 - n

distribute so 5n + 15= 3 - n

subtract three from both sides

5n - 12 = -n

subtract 5n from both sides

12 = −6n

Divide both sides by -6

n=-2

7 0
3 years ago
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