Answer:
20 weeks
Step-by-step explanation:
200-1.5x=180-.5x
20=1x
X=20
Answer:
1.75,0.625
Step-by-step explanation:
Given that a couple plans to have children until they get a girl, but they agree that they will not have more than three children even if all are boys.
a) The couples can have
X I girl I boy, II girl I,II boys, III girl I,II,III boys
Pr. 0.5 0.25 0.125 0.125
b) Expected no of children
=
c)Expected number of boys
= 
Answer:
y = 64 - 6.2 x is the required expression.
Step-by-step explanation:
Total length of the board = 64 inches long
Number of pieces cut from the wooden board = x
The length of each board = 6 (1/5) inches = 6. 2 in
The amount left over of the wooden board = y inches
Total length of board cut = Number of pieces cut ( Length of each length)
= x ( 6.20 inches) = 6. 2 x
The left over length = Total available length - Total length cut
= 64 - 6, 2 x
or, y = = 64 - 6, 2 x
Hence, y = 64 - 6, 2 x is the expression representing the amount of material y that would be left over .
Answer:
The value of 7u + 2 is 9.
Step-by-step explanation:
To solve this problem, we first must find the value of u given the second equation. The first step in simplifying this equation is to subtract 8 from both sides of the equation. This is modeled below:
-2u + 8 = 6
-2u + 8 - 8 = 6 -8
-2u = -2
Next, we can divide both sides by -2 to get the variable u alone on the left side of the equation.
-2u/-2 = -2/-2
u = 1
Therefore, the correct answer is u = 1. Now, we can plug in this value for u into the expression that is given.
7u + 2
= 7(1) + 2
= 9
Thus, the correct answer is 9.
Hope this helps!
Answer:
10
Step-by-step explanation:
2(5)=10
