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postnew [5]
3 years ago
12

Given that f(x) = 7x^2 − 84 = 0, find x.

Mathematics
1 answer:
jasenka [17]3 years ago
8 0

Answer:

x = 3.464

Step-by-step explanation:

7x^2 - 84 = 0

7x^2 = 84

x^2 = 12

x= 3.464

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If the relationship between the number of tickets sold and the number of hours proportional ? If so, how many tickets were sold
harkovskaia [24]

Answer:

t = 640

Step-by-step explanation:

tickets are directly proportional to number of hours.

t =kh

we find K.

240 = 3k

we divide by 3 in both sides.

k = 80

we substitute K to find how many tickets.

t =80 × 8

t = 640

it doesn't matter if you chose any two, e.g., you would get the same answer even if you used 5 and 400, or 9 and 720

6 0
3 years ago
Read 2 more answers
The school you want to go to has an acceptance rate of 15%15%. That means that 15%15% of the students who apply to the school ge
Mice21 [21]
Let, the number of students who applied for school = x
Then, it would be: x * 15% = 1800
x * 0.15 = 1800
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x = 12,000

In short, Your Answer would be 12,000 students applied for that

Hope this helps!

3 0
3 years ago
PLEASE HELP ME THIS IS URGENT I AM BEING TIMED!!!
valina [46]

Answer:

1/4

Step-by-step explanation:

printed part = 210

total pages = 280

probability to open printed page 210/280 =3/4

probability to not open printed page = 1 - probability to open printed page = 1 - 3/4 = 1/4

4 0
4 years ago
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Which of the following is a geometric sequence?
Karolina [17]
B isn’t. I can’t explain why it is but it is trust me.
8 0
3 years ago
Jared wants to paint his room. The dimensions of the room are 12 feet by 15 feet, and the walls are 9 feet tall. There are two w
nalin [4]

Answer:

1 ft = 12 in

1 in = (1/12) ft

30 in = (30/12) ft

30 in = 5/6 ft

The area of the surface that Jared needs to paint is:

2(12*9 + 15*9) - 2(5*6 + (5/6)*6) = 416 ft^2

Step-by-step explanation:

3 0
2 years ago
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