Answer:
3rd one
Step-by-step explanation:
2x + 5x + 4 = 25
7x + 4 = 25
7x +4 (-4) = 25 (-4)
7x = 21
7x/7 = 21/7
x = 3
26 = 3b - 2 - 7b
26 = 4b - 2
26 + 2 = 4b - 2 (+2)
28/4 = 4b/4
b = 7
5m/8 - 6/8 +3m/8 = 2/8
8m/8 = 8/8
m = 1
hope this helps
Axis of symmetry = x = -b/2a
where y = ax² + bx + c
f(x) = x² + 6x - 1 ⇒ a = 1 ; b = 6 ; c = -1
x = -(6)/2(1) = -6/2 = -3
g(x) = -x² + 2 ⇒ a = -1 ; b = 0 ; c = 2
x = -0/2(-1) = 0/-2 = 0
h(x) = 2x² - 4x + 3 ⇒ a = 2 ; b = -4 ; c = 3
x = -(-4)/2(2) = 4/4 = 1
least : f(x) = x² + 6x - 1 ; axis of symmetry is -3
middle : g(x) = -x² + 2 ; axis of symmetry is 0
greatest : h(x) = 2x² - 4x + 3 ; axis of symmetry is 1
Answer:
272
Step-by-step explanation:
45 and a third = 45 1/3
one sixth = 1/6
hence:
45 and a third divided by one sixth =
= 45 1/3 ÷ 1/6
= 136/3 ÷ 1/6
We convert to multiplication by converting 1/6 to its reciprocal which is 6/1
Hence:
= 136/3 ×6/1
= 272
