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Rashid [163]
3 years ago
15

Which graph would help you find the solutions of 2 – x2 = –x?

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0

Step-by-step explanation:

A quadratic graph will surely help you find the solutions

X2-x-2=0

x1=2 x2= -1

Substitute each of the x value in the original equation to get the y value

(2)^2-(2)-2= 0 (2,0)

(-1)^2-(-1)-2=-2 (-1,-2)

plot the coordinates on the graph,the graph should be a curve

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Here are the heights (in inches) of 12 students in a seminar.
Gala2k [10]

Answer: 75%

Step-by-step explanation:

Height given :

69, 62, 73, 67, 63, 65, 73, 71, 70, 66, 59, 75

The total number of height given = 12

The height less than 73 are 69 , 62, 67 ,63 , 65 , 71 , 70 , 66 , 59

The total number of heights less than 73 = 9

Therefore : the percentage of these students who are shorter than 73 inches = total number of students shorter than 73/ total number of height x 100

= 9/12 x 100

= 75%

5 0
3 years ago
Evaluate the expression.
mr Goodwill [35]

Answer:

21

Step-by-step explanation:

We need to follow PEMDAS

15+3*2

We need to multiply first

3*2 = 6

Then we add

15+6

21

5 0
2 years ago
Read 2 more answers
a group of 19 students want to see the show at the planetarium. Tickets cost $11 for each student who is a member of the planeta
natima [27]
Make a systems of equations:

11x+13y=209
x+y=19


7 0
3 years ago
the amount of lemonade at the beginning of the party was 45 quart. At the end of the party there was 8 quarts left. What was his
motikmotik

His percentage of change in the amount of quarts is 82.22%.

Initial amount of lemonade = 45 quart

End amount of lemonade = 8 quart

Change in amount = 45 - 8

                               = 36

Percent = \frac{change in value}{initial value}*100

             = \frac{37}{45}*100

             = 0.8222 * 100

             = 82.22%

Hence, his percentage of change is 82.22%.

To learn more about percentage here:

brainly.com/question/28269290

#SPJ1

8 0
1 year ago
Please help and show work ​
Advocard [28]
To find the value of the angle we start with tan(theta)= o/a now fill in variables tan(theta)= 39.05/18 then we have to move tan to the other side so we get theta = tan^-1(39.05/18) this will give us theta = 65
4 0
2 years ago
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