Answer:
55/72
Step-by-step explanation:
5/6 of 11/12
= 5/6 x 11/12
=55/72
The <span>ratio of adam's height to sam's height is 4:3. Therefore, Sam's height is 3/4 of adam's height. This is done by applying rules on ratios. We do as follows:
4 / 3 = adam's height / sam's height
sam's height = (3/4) adam's height
Hope this answers the question. Have a nice day.</span>
Answer:
x² – x – 12 = (x – 4)(x + 3)
Step-by-step explanation:
Identify two numbers that add to -1 and multiply to -12, let's call them p and q.
So ax² + bx + c = (x + p)(x + q)
pq = c
p + q = b.
It is easier to find these numbers by finding factors of -12.
This can be done by splitting the number up until all the numbers are prime.
-12 → 6 × -2 or -6 × 2 → -(3 × 2 × 2)
There can only be two numbers so the only options we have are 6 and -2, -6 and 2, 3, and -4, or -3 and 4.
We can eliminate them by adding them up.
6 + -2 = 4 ≠ -1 so that can't be it.
-6 + 2 = -4 ≠ -1 so that can't be it either.
-3 + 4 = 1 ≠ -1
therefore p and q are 3 and -4 because 3 + -4 = -1.
so x² – x – 12 = (x – 4)(x + 3)
p = -4, and q = 3.
(x – 4)(x + 3) = x(x + 3) – 4(x + 3) = x² + 3x – 4x + 12 = x² – x – 12
11/8 = x / 3
cross multiply
8x = 11 * 3
8x = 33
x =33/8
x = 4.125
x = 4.1 (round to nearest tenth)
Answer
B: 4.1 ft
The correct answer is:
[C]: "
a = ±
" .
<span>
___________________________________________________________Explanation: _________________________________________________________We are given:
_________________________________________________________ </span>
→ "
25 = a² + b² " ; Solve for "
a" ;
_________________________________________________________ → To solve for "
a" ; we want to isolate "
a" on one side of the equation.
_________________________________________________________We can rewrite: "
25 = a² + b² " ;
as: " a² + b² = 25 " .
_________________________________________________________
Then, we can subtract "
b² " from each side of the equation; as follows:
_________________________________________________________
→ " a² + b² − b² = 25 − b² " ;
to get:
_________________________________________________________ → " a² = 25 − b² " ;
_________________________________________________________ → Now, take the square root of EACH SIDE of the equation ;
to isolate "
a" on one side of the equation; & to solve for the value(s) of "
a" ;
_________________________________________________________ → √(a²) =

;
to get:
_____________________________________________________ → a = |
| ;
→ a = ±
;
→ which is:
Answer choice: [C]: "
a = ±
" .
______________________________________________________