Answer:
X = 1
Y = -2
Step-by-step explanation:
Use simultaneous equations to work out.
Answer:
85 + x 
Step-by-step explanation:
85 pounds at birth
1300 pounds at adulthood
So let call x is the pounds gap between this above 2 milestones, (x is always positive ) we can form inequality:
85 + x
59 is D
because with the point (-3,7) you substitute it into the equation, making it: 7=4x+b. solve for b. then you have y=4x+19. work out the algebra in the possible choices and whatever equals y=4x+19 will be the answer. in this case, its D.
60 is C
same as above, you do the algebra of the equation. bring the one over after doing distribution with the 4 and voila!
61 is A
a relatively easy one, all you do is the the slope -4 where m goes, and 3 where b goes. y= -4x+3
62 is C.
this one requires more work.
chose one of the points, in this case (2,7) and put them into the equation.
but wait, you need a slope!
you get that use the formula (y2-y1)/(x2-x1) which will be
(7-5)/(2-3) which will be
-2.
now you have y-7= -2(x-2)
voila!
63 is C. y= 1/2x+3
64 is B. (3, -5)
66 is B. negative. the line goes \ ( not / which is positive)
67 would be A. because it is positive and the I and the E are in the right places.
70 is C. 2/3. as before, remember we can but the points into this equation and have (6-4)/(3-0) which = 2/3
71 is D. y= 3x+10
72 is C. a third degree monomial
73 can't read
74 can't read
75 can't read.
From information given I can only tell you that
a=1/2bh
multiply both sides of = by 2 and you'll cancel the 1/2 out on the right side making
2a=bh
then divide both sides by b, canceling out the b on the right side giving you
2a/b=h
so h=2a/b
