2(j + 2 + j)
Twice the sum of 2 consecutive odd (or even) intergers.
or
3(2j + 9 + j)
Three times the sum of twice a number and 9 and a number
Answer:
Step-by-step explanation:
Given
There are 120 Pianist in a competition
(a)In first round 30 pianist is selected
this can be done in 


(b)In the second round 5 pianist is selected out of 30
this can be doe by 


Answer:
200
Step-by-step explanation:
25% of x = 50
25/100 × x = 50
x = 50 × 100/25
x = 50 × 4
= 200.
25% of <u>2</u><u>0</u><u>0</u><u> </u> = 50
<h2>
Question:</h2>
Write an expression that can be used to find the sum of the most common and least common lengths of alien fingers.
<h2>
Answer:</h2>
5 + 1 = 6
<h2>
Step-by-step explanation:</h2>
(MCL) Most Common Length = 5
(LCL) Least Common Length = 1
MCL + LCL =
5 + 1 = 6
9514 1404 393
Answer:
maximum: 8; no minimum
Step-by-step explanation:
A graph can be useful. I find a graphing calculator handy. It shows the maximum of the function is f(-1) = 8. Since the parabola goes to -∞ for large values of x, there is no minimum.
maximum: 8
__
You can also find the maximum by putting the function in vertex form.
-3(x^2 +2x) +5 . . . . factor the leading coefficient from the x terms
-3(x^2 +2x +1) +5 -(-3)(1) . . . . add the square of half the x-coefficient, subtract the equivalent amount
-3(x +1)^2 +8 . . . . . . the vertex form of the expression for f(x)
This form is ...
a(x -h)^2 +k . . . . . with a=-3, h=-1, k=8
so the vertex is (h, k) = (-1, 8) -- the same as shown on the graph. The negative value of 'a' tells you the parabola opens downward, so the vertex is the maximum. The maximum is 8 at x = -1.