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Bad White [126]
3 years ago
5

What is the answer to this equation?

Mathematics
1 answer:
nika2105 [10]3 years ago
7 0

Answer:

use photomath

Step-by-step explanation:

ur welcome

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A rectangular auditorium seats 1564 people. the number of seats in each row exceeds the number of rows by 1212. find the number
yanalaym [24]
<span>We can safely assume that 1212 is a misprint and the number of seats in a row exceeds the number of rows by 12. Let r = # of rows and s = # of seats in a row. Then, the total # of seats is T = r x s = r x ( r + 12), since s is 12 more than the # of rows. Then r x (r + 12) = 1564 or r**2 + 12*r - 1564 = 0, which is a quadratic equation. The general solution of a quadratic equation is: x = (-b +or- square-root( b**2 - 4ac))/2a In our case, a = 1, b = +12 and c = -1564, so x = (-12 +or- square-root( 12*12 - 4*1*(-1564) ) ) / 2*1 = (-12 +or- square-root( 144 + 6256 ) ) / 2 = (-12 +or- square-root( 6400 ) ) / 2 = (-12 +or- 80) / 2 = 34 or - 46 We ignore -46 since negative rows are not possible, and have: rows = 34 and seats per row = 34 + 12 = 46 as a check 34 x 46 = 1564 = total seats</span>
4 0
3 years ago
If m = -2 and p=3, then (4p-m)/mp is
ddd [48]

Answer:

-2  <em>1/3</em>

Step-by-step explanation:

((4 * 3) - (-2) /(-2*3)

(12 + 2 ) / (-2 * 3)

14 / -6

-2  <em>1/3</em>

7 0
2 years ago
Please I really need help <br> This is my last point <br> Show workings please
KiRa [710]

Step-by-step explanation:

By rotating a figure,

The length of its sides remain the same.

Therefore line AB = line A'B'.

=> 5x - 14 = 4x + 4

=> x = 18

Hence, line AB = 5(18) - 14 = 76.

7 0
3 years ago
Read 2 more answers
What is the value of x ? <br> A : 15<br> B : 30 <br> C: 45 <br> D : 60
jenyasd209 [6]

Answer:

A

Step-by-step explanation:

So that is a 90 degree angle and there is an angle of 30. 30-90 is 60. 60 divided by 4 is 15. So thus the answer is A,15.

7 0
3 years ago
Read 2 more answers
HELPP ANYONE<br> Given that Y is the centroid of STU , find X<br> A 4<br> B 10<br> C 15<br> D 30
lesya [120]
Since Y is the centroid then the larger piece of the median is 2 times that of the smaller piece

10 = 2*(2x - 3)

10 = 4x - 6

16 = 4x

x = 4
8 0
3 years ago
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