Answer:
your answer should be c
Step-by-step explanation:
i hope i could properly help you make me brainliest
71 is the answer. If you round it, it would be 70.
Volume of cylinder is 402.1238....=402.12ft
Volume of rectangle is 1344ft
Add both together= 1746.12ft
Surface area of rectangle:
Length=14ft
width= 8ft
height =12ft
14x12=168x2=336
8x12=96x2=192
14x8=112x2=224
336+192+224=752
Surface Area of cylinder:
Radius= 4ft
height=8ft
2π r h+2π r^2
2π4(12)+2<span>π4^2
2</span>π48+2<span>π16
301.59+100.53=402.42ft
Add both surface area together=1154.12ft</span>
I hope this helps you
y=f (x)=x-7
y=x-7
x=y+7
f^-1 (x)=x+7
We calculate the speed by dividing the distance over time:
s = d/t
So the distance described in the problem is always the same, A to B and B to A.
But we are told that;
7 = d/t
7 = 2d/(t + 2)
that is, the first equation say that at speed 7 km/h a distance d is walked in a time t
the second equation say that at a average speed of 7 (that is 8 on one way and 6 in the other: 8 + 6 = 14, half of it), twice the distance is walked in a time equal to the first time plus 2 minutes.
So we have a system of linear equations, 2 of them with two unknowns, we can solve that:
7 = d/t
7 = 2d/(t + 2<span>)
</span>lets simplify them:
7t = d
7(t + 2) = 2d
7t = 2d - 14
we substitute the first in the second:
<span>7t = 2d - 14
</span><span>7t = d
</span>so:
d = 2d - 14
d = 14
so the distance between A and B is 14 km
