The expression is 2/7s-21
(s=students)
other than that i don’t understand your question
message me for help!!
Answer:
20 units²
Step-by-step explanation:
The x-intercepts are symmetrically located around the x-coordinate of the vertex, so are at
1.5 ± 5/2 = {-1, 4}
Using one of these we can find the unknown parameter "a" in the parabola's equation (in vertex form) ...
0 = a(4 -1.5)² +12.5
0 = 6.25a +12.5 . . . . . simplify
0 = a +2 . . . . . . . . . . . divide by 6.25
-2 = a
Then the standard-form equation of the parabola is ...
y = -2(x -1.5)² +12.5 = -2(x² -3x +2.25) +12.5
y = -2x² +6x +8
This tells us the y-intercept is 8. Then the relevant triangle has a base of 5 units and a height of 8. Its area is given by the formula ...
A = (1/2)bh = (1/2)(5)(8) = 20 . . . . units²
There are 32 boys; if you set up a proportion of boys over girls like 2/5=x/80 and cross multiply you should get that x = 32 boys
Answer:
$14.40
Step-by-step explanation:
$180 * 8% ( Or 0.08 )
Answer:
B: 41, 45,51
Step-by-step explanation:
an=41 +(n-1)5
- an: nth term
- 41: first term in the sequence
- (n-1): position of term in the sequence, minus 1
- 5: common difference
To find 1st term plug in 1 for n,
an=41+(1-1)5 ->41
For 2nd term
an=41+(2-1)5 ->46
3rd Term
an=41+(3-1)5 -> 51
Hope this helps.