Answer:
C, D
Step-by-step explanation:
The equation for the x-coordinate will have the x-coordinate of the midpoint (-1/2) on the left side of an equation involving x2. Choice C applies.
The equation for the y-coordinate will have the y-coordinate of the midpoint (-1) on the left side of an equation involving y2. Choice D applies.
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<em>Additional comment</em>
When you solve the equation
M = (P +Q)/2
for P, you find that ...
P = 2M -Q . . . . . . . . our favorite way to find the other end point
or ...
x2 = 2(-1/2) -3 = -4
y2 = 2(-1) -(-5) = 3
The coordinates of P are (-4, 3).
Answer:
The son is 20 and a half years old.
The father is 36 and a half years old.
Step-by-step explanation:
We can solve this easily by turning it into an equation.
Let the mans age be y and the fathers age be x.
y+x=57
x=y+16
We can use the substitution method to solve for the first equation.
y+(y+16)=57
Now we only have one variable to solve for. Add like terms.
2y+16=57
Subtract 16 on both sides.
2y=41
Divide both sides by 2 to isolate y.
y=20.5
Now substitute 20.5 for y to solve for x.
20.5+x=57
Subtract 20.5 from both sides.
x=36.5
<em>The son is 20 and a half years old.</em>
<em>The father is 36 and a half years old.</em>
Hope this helps!
Yes it is equivalent to the original question.
A=lw
l=10, w=6
a=10x6
a=60ft^2
so, the answer is 60ft^2