Answer:
7/20
Step-by-step explanation:
90/100-2/5
=1/2
1/2-15/100
=7/20
Answer:
y=10-x
Step-by-step explanation:
1. Find the slope of the equation using the formula (change in y/change in x)
(3-7)/(7-3)=-4/4=-1
2. Plug in the slope and one of the coordinate points to the slope-intercept form to find the y-intercept.
slope-intercept form: y=mx+b
7=-3+b
b=10
3. Put the slope-intercept form of the equation together.
y=10-x
Answer:
The volume of pyramid is 480cm³
Step-by-step explanation:
l = 15cm
w = 6cm
h = 16cm
volume = (1/3)×15×6×16
= 480cm³
Answer:
5.625
Step-by-step explanation:
45 ÷ 8 = 5.625
Answer:
40
Step-by-step explanation:
Put -2 where x is and do the arithmetic.
f(-2) = 3(-2)^2 -12(-2) +4
= 3·4 +24 +4
= 12 + 28 = 40
f(-2) = 40