Given
81 red balls
Number of balls per row = Number of rows
Procedure
b = Number of balls
r = Number of rows
T = Total number of balls
b = r
![\begin{gathered} T=b\cdot r \\ Given\text{ b=r} \\ T=b^2 \\ b=\sqrt[]{T} \\ b=\sqrt[]{81} \\ b=9 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20T%3Db%5Ccdot%20r%20%5C%5C%20Given%5Ctext%7B%20b%3Dr%7D%20%5C%5C%20T%3Db%5E2%20%5C%5C%20b%3D%5Csqrt%5B%5D%7BT%7D%20%5C%5C%20b%3D%5Csqrt%5B%5D%7B81%7D%20%5C%5C%20b%3D9%20%5Cend%7Bgathered%7D)
The answer is:
Number of rows = 9
Number of balls = 9
(5^-1)(5^-3)
=1/(5^1 . 5^3)
= 1/5^4
=1/625
answer is A. 1/625 (first choice)
Answer:
the correct answer are the last three options
Step-by-step explanation:
i just took the test and got it right
Reading - 44
Sports - 55
Video games - 55
Music - 66
--------------------------
= 220
Reading = (44/220) x 100 = 20%
Sports = (55/220) x 100 = 25%
Video games -> same as sports
Music = (66/220) x 100 = 30%
20 + 25 + 25 + 30 = 100%
hope this helps :)
plz let me know if this was not your question
Answer:
x² +11x +28
Step-by-step explanation:
(x +4) (x+7)
take the first x and multiply by x and then the 7 which gives you x² +7x
then take the 4 and multiply it by the x and the 7 which gives you 4x + 28
add all like terms
