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mote1985 [20]
3 years ago
11

Leah babysits during the day for three dollars per hour and at night for five dollars per hour. If she worked five hours in our

$19, how many hours did she babysit during the day? How many at night?
Mathematics
2 answers:
Serggg [28]3 years ago
7 0
The answer is 4+3=7 percent of the answer is correct
Stells [14]3 years ago
5 0

Answer:

3d + 5n =19

3*3 + 5*2 = 19

9 + 10 = 19

Step-by-step explanation:

3d + 5n =19

3*3 + 5*2 = 19

9 + 10 = 19

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16 flowers are yellow
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3 years ago
The co-ordinate of the point whose abscissa is -3 and ordinate is 0 is (0,-3)
Tju [1.3M]
Oh yeah lol I just don’t think can be friends
6 0
3 years ago
SOLVE x^4 − 15x^2 − 16 = 0 <br> What are the roots of the equation?
kakasveta [241]

Answer:

roots : 4, -4, i, -i

Step-by-step explanation:

This gets a bit tricky.

We have to substitude x^2 as u in this problem.

Now to rewrite x^4 − 15x^2 − 16 = 0 with u, we get

u^2 - 15u - 16 = 0

( u - 16) (u + 1)

U = 16

U = -1

<em>This is not the end of the problem. </em>

Now we have to substitute x^2 back to u.

x^2 = 16  --> we get the roots 4 and -4

x^2 = -1 --> we get the roots i and -i

tadah!

8 0
2 years ago
Mathew is watching a car race on TV. His favorite car covered 10 laps of 3.6 miles each in 18 minutes. What is average speed of
Karo-lina-s [1.5K]
In the given question, all the necessary information's are already provided. Using these information's it is easy to find the average speed of the car in miles per hour. It is given that the car covers 10 laps in 18 minutes and each lap is 3.6 miles in length.
Total distance covered by the car = (10 * 3.6) miles
                                                     = 36 miles
Now we have to convert the time from minutes to hours. So
18 minutes = 18/60 hours
                   = 3/10 hours
Now we can easily calculate the average speed of the favorite car of Mathew.
Average Speed = 36 * (10/3) miles/hour
                           = 120 miles/ hour

8 0
2 years ago
Hailey is starting a new exercise program. The first day she will spend 30 minutes on a treadmill. She will increase her time on
Alexxx [7]

Answer:

A) T(d) = 5d + 30

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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