Answer:
A) Tyler is trying to make 122 total invitations and is trying to make 66 by the end of the week.
B) Tyler has already made 66 invitations or half of his goal.
C) Tyler has seven days to finish the invitations because it you look at the plot the rest of the invitations are split into 7 even days.
Hope this helps.
Try this solution with a short explanation:
a) y=ax²+5; ⇒ substitution (4;0): 16a+5=0; ⇒ a= -5/16.
Answer: <u>y= -5/16 x²+5</u>;
b)<u> y=x²</u>;
c) y=ax(x+7); ⇒ substitution (4;4): 4a(4+7)=4; ⇒a=1/11.
Answer: <u>y= 1/11 x²+ 7/11 x</u>;
d) y=a(x-1)(x-3); ⇒substitution (0;3): (-1)*(-3)*a=3; ⇒a=1.
Answer: <u>y=x²-4x+3</u>;
e) y=a(x-1)(x+3); ⇒ substitution (-1;5): (-2)*2*a=5; ⇒ a= -5/4.
Answer: <u>y= -5/4 x² -5/2 x +15/4</u>;
f) y=ax²+bx+c; ⇒ substitution (2;2): 4a+2b+6=2 or 2a+b= -2 (the I-st equation of the system);
the x-coordinate of the vertex: -b/2a=2; ⇒ b= -4a (the II-d equation of the system);
Answer: <u>y=x²-4x+6.</u>
25(4)3 -4(-2)3 -4(-2)2 (4)
25(64) -4(-8) -4(4) (4)
1600+32-16×4
1600+32-64
1568-64= 1504
Answer:
B
Step-by-step explanation:
I have no idea.
Answer:
D = 42
A = 42
Step-by-step explanation:
If ABC = DEF
A = D
x + 21 = 2x
21 = 2x - x
21 = x
A = x + 21
(21) + 21 = 42
D = 2x
2(21) = 42
I'm 90% sure. I'm not fully sure though.