Answer:
x= -3
y= -2
From the first one, if you add 2y to both sides you can plug that into the second one and solve for y. Then, plug y to the first one and solve for x.
Answer:
q(r(4)) = -61
Step-by-step explanation:
q(x) = -2x +1
r(x) = 2x^2 - 1
q(r(4))
First find r(4)
f(4) = 2 (4)^2 -1
= 2 *16 -1
= 32-1
= 31
Then put this value in for x in q(x)
q(r(4)) = q(31) = -2(31)+1
= -62+1
= -61
75 x 4.5%= 3.375
75 - 53 = 22
22 / 3.375 = 6.5
it will take 6.5 yrs for this country to have 53 million cars
<h2><u>
Boys and girls</u></h2>
<u></u>
As there are 3 boys and 2 girls in the group, only 1 game was played between a girl and a girl.
Since a group of friends played chess, and each person played exactly one game with each other in the group, and out of the total number of games played, 3 games were played between a boy and a boy, and 6 games were between a boy and a girl, to determine how many games were played between a girl and a girl, the following calculation must be performed:
- 2 players = 1 match
- 3 players = 3 games
- 6/3 = 2
Therefore, as there are 3 boys and 2 girls in the group, only 1 game was played between a girl and a girl.
Learn more about maths in brainly.com/question/10525625
-- "Perimeter" means all the way around, all four sides.
-- That's two lengths and two widths.
-- So one length and one width is half of the perimeter.
-- If the perimeter is 16-ft, then one length + one width is 8-ft.
-- If the width is 5-ft, then the length is (8 - 5) = 3-ft.