Need help !<br> Surface area

If a+8 = 12 , then a =ayuda por favor

NARA [144]

Answer:

a = 4

Step-by-step explanation:

a+8 = 12

a= 12-8

a=4

7 0

3 years ago

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The line plots show the number of hours two different age groups of teenagers spent online the previous week.

nikklg [1K]

The range of the top plot, hours spent by 13-15 year olds, is found by subtracting the highest value, 34, and the lowest value, 21. 34-21=13.
The mean of the top plot is found by adding together all of the data points and dividing by 10 (the number of data points):
$\frac{21+24+26+27+27+28+28+28+31+34}{10}=\frac{274}{10}=27.4$

The range of the bottom plot, minutes spent online by 16-18 year olds, is found by subtracting the highest value, 36, and the lowest value, 12. 36-12=24.
The mean of the bottom plot is found by adding together all of the data points and dividing by 11 (the number of data points):
$\frac{12+21+27+28+28+28+28+30.5+34+35+36}{11}=\frac{307.5}{11} \approx27.95$

4 0

3 years ago

In 2005, out of every 50 employees at a company were women. If there are total company employees, estimate the number of women

myrzilka [38]

Answer:

9248

Step-by-step explanation:

let x be the number of women out of 41285 total company employees then we have the following proportion

11.2 : 50 = x : 41285

x = (41285 * 11.2)/50

x = 9247.84

the number of women is 9247.84 or if we round it since we can not have 0.84 of a woman employee, is it 9248.

3 0

2 years ago

Please help with these questions for alot of points and brainiest

Sliva [168]

5. To figure this out you must find when y = 0

-16t^2 = -200

t^2 = 12.5

Square root

t = 3.54 C

6.

Axis of symetry = -.5 (always a vertical line down vertex)

Vertex = (-.5, -6.5) (the minimum of the graph)

B

7. To find maximum height you must find the vertex

The maximum height is 549 feet after 5.75 seconds

C

9. Solve for X

x^2 = 1

Square root

X = plus or minus 1

A

6 0

3 years ago

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Movie theater charges $11.00 for an adult ticket and $8.00 for a child's ticket. The ticket sells 124 tickets and brings in $118

Romashka-Z-Leto [24]

Answer:the number of adult tickets that the movie theatre sold is 63.

the number of child's tickets that the movie theatre sold is 61

Step-by-step explanation:

Let x represent the number of adult tickets that the movie theatre sold.

Let y represent the number of child's tickets that the movie theatre sold.

The total number of tickets sold is 124. It means that

x + y = 124

Movie theater charges $11.00 for an adult ticket and $8.00 for a child's ticket. The total cost of the tickets sold is 1181. It means that

11x + 8y = 1181 - - - - - - - - - - - -1

Substituting x = 124 - y into equation 1, it becomes

11(124 - y) + 8y = 1181

1364 - 11y + 8y = 1181

- 11y + 8y = 1181 - 1364

- 3y = - 183

y = - 183/ - 3

y = 61

x = 124 - y = 124 - 61

x = 63

6 0

3 years ago

Need help ! Surface area