9514 1404 393
Answer:
Step-by-step explanation:
Let x represent the amount invested at 8%. Then the total interest earned is ...
0.06(7000 -x) +0.08x = 480
420 +0.02x = 480 . . . . . . . . . eliminate parentheses
0.02x = 60 . . . . . . . . . . subtract 420
x = 60/0.02 = 3000 . . . . . divide by the coefficient of x
$3000 was invested at 8%; $4000 was invested at 6%.
If the height of the pyramid is 71 meters and the angle of elevation of the base of the pyramid is 42°, then the length of the base of the <span>pyramid is
2(71) tan 42 = 127.86
The closes answer is 127 feet</span>
First of all , you need to find the area of both walls and then add them together to get the amount of square feet in one wall. You also have to multiply the answer by 2 to get the square feet that need to be painted.
19*15=135 --> 135*2= 270
8*10= 80 ---> 80*2= 160
once you have done this you add 160+270, and you get your which is yes, because there is only 430 squared feet that need to be painted.
explanation up top:) that's the explanation I hope you understand
In terms of b-----
3a+6b=d
6b=d-3a
b=d-3a/6
In terms of d-------
3a+6b=d
d=3a+6b