Answer:
the y-intercept is (0,75)
Step-by-step explanation:
the y-intercept is where the line crosses the y-axis.
Answer:
250
Step-by-step explanation:
First with factorise the common factor out first, in this case, its 25.
25x6+25x4 = 25(6+4)
Now using of order of operations we will evaluate the bracket first.
25(6+4) = 25(10) = 25 x 10 = 250
Vertical angles are equal to each other:
∠2 = ∠3
5 + 4y = 6y - 25
→ 30 = 2y
→ 15 = y
∠2 = 5 + 4y = 5 + 4(15) = 5 + 60 = 65
linear pairs equal 180:
∠1 + ∠2 = 180
→ ∠1 + 65 = 180
→ ∠1 = 115
Answer:
well, we only no that
2l + 2w is 80
(lengths and widths on all 4 sides
and that w * l is A
so the function should be w times what's left for l, but also expressed by something with w
2l + 2w = 80 | -2w
2l = 80 -2w | devide by 2
l = 80 - w
now we can substitute l in
A = w * l
so that we only need w's
A(w) = w * (80-w)
for any w it will give us the area, makes only sense for 0<w<80
