Elements of N should be like {6,7}
F = k x
15 = k *10
k = 1.5
check:
24 = 1.5 x
x = 16 sureenough
so 1.5 oz/inch
= 1/1.5 inches/oz = 2/3 = 0.6666.... in/oz
Answer:
the answer is A. 36
Step-by-step explanation:
because the rectangles are proportionate, I set up ratios.
90:75 so h:30
from there I did 70/30 because those sides are proportionate to each other and this got me 2.5. then I did 90/2.5 to get 36
1:10 + 2:55 = 4:05
John finished cleaning up his yard at 4:05 pm.
Answer:
f(x) = -(x +1)(x -5)
Step-by-step explanation:
The zeros at x = -1 and x = 5 tell us we can write this quadratic function as ...
f(x) = a(x +1)(x -5)
for some scale factor "a".
When we put x=1 into the equation, we get ...
f(1) = a(1+1)(1-4) = -8a
But we know that f(1) = 8, so ...
8 = -8a
-1 = a . . . . . . divide by -8
Now, we can write the function as ...
f(x) = -(x +1)(x -5)
_____
If you like, you can expand this to ...
f(x) = -(x^2 -4x -5)
f(x) = -x^2 +4x +5 . . . . . "standard form"