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Talja [164]
3 years ago
9

Karla spent 9/2 hours of her time for preparing the exam and 5/2 hours on homework per day. If she sleeps 7 hours per day, how m

any spare hours does she have?
Mathematics
1 answer:
Naya [18.7K]3 years ago
6 0

Answer:

2 hours if they go to school.

10 hours if they dont go to school.

Step-by-step explanation:

add up the hours.

9/2+5/2=14/2=7hours +7 hour of sleep= 14 hours.

if they go to school for 8 hours then add 8. then it =22 hours witch gives you 2 hours

if they dont go to school then you got 24-14 hours=10 hours.

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alexandera worked 5 hours one day 4.5 hours another and 2.5 another. Find the mean average deviation.
lara31 [8.8K]

Answer:

1.16667

Step-by-step explanation:

3 0
4 years ago
A retailer who sells backpacks estimates that by selling them for x dollars each, she will be able to sell 100−x backpacks each
zvonat [6]

Answer:

x = 50

R = $2500

Step-by-step explanation:

Given in the question a quadratic equation,

−x² + 100x

To find the selling price, x, which will give highest revenue, y, we will find maximum value of parabola curve −x² + 100x

The value of -b/2a tells you the value x of the vertex of the function

−x² + 100x

here a = -1

        b = 100

Selling price = -(100)/2(-1)

                    =   50

 

R = −(50)² + 100(50)

  = 2500

8 0
3 years ago
What is the value of x for which m || n?<br> x = 40<br> x = 5<br> x = 105<br> x = 30
QveST [7]

Answer:

(A) x=40

Step-by-step explanation:

Given: It is given that m is parallel to n.

To find: The value of x.

Proof: It is given that m is parallel to n, from the figure it can be seen that 105° and (3x-15)° forms alternate exterior angles which are equal in measure because m is parallel to n.

Thus, 105^{\circ}=3x-15^{\circ}

⇒105^{\circ}+15^{\circ}=3x

⇒120^{\circ}=3x

⇒\frac{120}{3}=x

⇒x=40

Thus, the value of x is 40, hence option A is correct.

4 0
3 years ago
Read 2 more answers
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Anni [7]
The distance between the points is 16
6 0
3 years ago
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Which of these graphs represents x -8? A. B. C. D.
Dafna1 [17]

Answer:

i do not know i think it is B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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