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disa [49]
2 years ago
7

8) A school community had planned to reduce the number of grade 9 students per class room by constructing additional class rooms

. However, they constructed 4 less rooms than they planned. As the result, the number of students per class 10 more than they planned. If there are 1200 grade nine students in the school, determine the current number of class rooms and the number of students per class.​
Mathematics
1 answer:
Allisa [31]2 years ago
7 0

Step-by-step explanation:

Let "c" be the original number of classrooms.

The 1200/c was the original number of students per classroom.

----

Equation:

1200/(c-4) = (1200/c)+10

Multiply thru by c(c-4)

---

1200c = 1200(c-4)+10c(c-4)

---

1200c = 1200c-4800 + 10c^2-40c

----

10c^2-40c-4800 = 0

c^2-4c-480 = 0

Factor:

(c-24)(c+20) = 0

---

Positive solution:

c = 24 (# of classrooms originaly planned)

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Answer with Step-by-step explanation:

We are given that

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When two vector a and b are orthogonal then

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3 years ago
Javier owns 200 shares on one company. On Tuesday, the stock price dropped $19 per share. What was the total change in value of
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Answer:

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8 0
3 years ago
A farmer Has 900 yards of fencing to enclose a rectangular pasture for her goats. Since one side of the pasture borders a river,
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Step-by-step explanation:

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If you plug it into a calculator, you get that.

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