"31-inch piece of steel is cut into three pieces"
Call the pieces a,b,c
a + b + c = 31
"second piece is twice as long as the first piece"
b = 2a
"third piece is one inch more than seven times the length of the first piece"
c = 1 + 7a
Ok, we have our equations, let's substitute the second and third into the first.
a + 2a + 1 + 7a = 31
10a + 1 = 31
10a = 30
a = 30/10 = 3
b = 2a = 6
c = 1 + 7a = 22
Check: 3 + 6 + 22 = 31, good
Answer: 3 inches, 6 inches, 22 inches
yo sup??
This figure can be resolved into two cuboids
one with l1,b1,h1=1,3,2
and other with l2,b2,h2=6,3,3
Volume of the two cuboids=l1*b1*h1+l2*b2*h2
=1*3*2+6*3*3
=6+54
=60 cm^3
Hope this helps.
Answer:
Blonde, 144
Step-by-step explanation:
Looking at the graph we can see that 144 was the most and 144 was blonde :))
Answer:
B
Step-by-step explanation:
You need the equation to equal 0
4x²-5=3x+4 Subtract 4 and 3x from both sides
4x²-5-4-3x
4x²-3x-9
a=4 b=-3 c=-9
(-b±√(b²-4ac))/2a
(-(-3)±√-3²-4(4)(-9)) / (2(4)
.1D + .5N + .25Q = 2.50
D = 2Q
N = 4Q
4Q = 2D = N
2000(.1D + .05N + .25Q = 2.5)
200D + 100N + 500Q = 5000
100Q + 25Q + 500Q = 5000
625Q = 5000
Q = 8
There are 8 quarters