Hello :
<span>y = –2x + 1 ....(1)
6x + 2y = 22 ....(2)
</span><span>by substitution in (2) : 6x+2(-2x+1) =22
6x-4x+2 = 22
2x =20
x =10
in(1) : y =-2(10)+1 = -19 </span>
Answer:
D. d=50°
Step-by-step explanation:
As the sum of all of the angles of a triangle are 180°, the student found the angle incorrectly.
The correct answer would be
![180-90-50=40](https://tex.z-dn.net/?f=180-90-50%3D40)
Givens
AB + BC = AC
AB = 2(x + 1)
BC = 3x + 1
AC = 4(x + 2)
Substitute and Solve
AB + BC = AC
2(x + 1) + 3x + 1 = 4(x + 2) Remove the brackets on the left
2x + 2 + 3x + 1 = 4(x + 2) Collect the like terms on the left
5x + 3 = 4(x + 2) Remove the brackets on the right.
5x + 3 = 4x + 8 Subtract 4x from both sides.
5x - 4x + 3 = 8
x + 3 = 8 Subtract 3 from both sides
x =8 - 3
x = 5
Answers
AB=2(5 + 1) = 2 * 6 = 12
BC = 3x + 1 = 3*5 + 1 = 15 + 1 = 16
AC = 4(5 + 2) = 4*7 = 28
She purchased 4 children’s tickets. To solve you find out that she buys 3 adult tickets worth $27. Then add $4 until $43.
Answer:
Step-by-step explanation: