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Anni [7]
3 years ago
8

Sharon read a 300-page book. She read at a rate of 15 pages per day in d days.

Mathematics
1 answer:
faust18 [17]3 years ago
8 0
300/15 = d 

I hope this helps!
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Ignore the blue and 13. But I don’t understand dividing the polynomials. It says to complete the problem.
Virty [35]
OK the next step is to multiply 3r -1 by -7r
this gives us -21r^2 + 7r  and we write it below -21r^2 + 25r
and subtract 
This gives us  18r and we bring down the -6   to give
18r - 6

Finally we divide  18r by  -3r   to give  -6 then  add - 6 to the r^2 - 7r on the top 
then multiply -3r - 1 by -6 to give 18r - 6
subtraction then leaves nothing.

so the answer is r^2 - 7r - 6

4 0
2 years ago
A coach purchases 47 hats for his players and their families at a total cost of $302. The cost of a small hat is $5.50. A medium
bazaltina [42]
First, we define variables:
 x: small hat
 y: medium hat
 z: large hat
 We now write the system of equations:
 x + y + z = 47
 5.50x + 6y + 7z = 302
 -3x + y = 0
 We can write the system in matrix form as:
 Ax = b
 Where,
 A = [1  1  1; 5.50  6  7; -3  1  0]
 b = [47;  302;  0]
 x = [x;  y ;  z]
 Solving the system we have:
 x = 6
 y = 18
 z = 23
 Answer:
 
the coach did purchase 23 large hats
 
d. 23
3 0
2 years ago
Read 2 more answers
Caroline measured the weight of a dog that came into the veterinary clinic. She determined that her measurement had a margin of
Andrews [41]

Weight of the dog in kgs-0.05 kgs

3 0
3 years ago
A certain star is 1.135 × 10^14 km away from Earth. If light travels at 9.4607 × 10^12 km per year, how long will it take for li
Yuliya22 [10]

Answer:

Approximately 11.99 years

Step-by-step explanation:

This is just a type of problem like finding how long it will take for you to get somewhere.  Like in finding how fast you need to go to go to a place that is 60 miles in one hour.  All you have to do is divide the distance of the star by the speed of light, and you get the amount of time it will take for the star's light to reach the Earth.

4 0
2 years ago
15% of what number is 9?
Sholpan [36]

Answer:

x=60

Step-by-step explanation:

We have, 15% × x = 9

or,  

15

100

× x = 9

Multiplying both sides by 100 and dividing both sides by 15,

we have x = 9 ×  

100

15

x = 60

If you are using a calculator, simply enter 9×100÷15, which will give you the answer.

5 0
3 years ago
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