3x - 4y = 35
3x + 4y = 5
------------------add
6x = 40
x = 40/6 which reduces to 20/3
3x - 4y = 35
3(20/3) - 4y = 35
20 - 4y = 35
-4y = 35 - 20
-4y = 15
y = -15/4
solution is (20/3, -15/4)
Answer:
![(x+12)^2+(y-5)^2=80](https://tex.z-dn.net/?f=%28x%2B12%29%5E2%2B%28y-5%29%5E2%3D80)
Step-by-step explanation:
First, we see that the center of the circle is (-12, 5) by taking the midpoint of the circle. Secondly, the length of diameter is
.
2.35 + 1.10 = 3.45
2.35 / 3.45
1.10 / 3.45
294.20 / 3.45 x 1.10 = 93.80 to 4sf
294.20 / 3.45 x 2.35 = 200.40 to 4sf
93.80 + 200.40 = 294.20
93.80 / 1.10 = 85.2727272727
200.40 / 2.35 = 85.2765957447
85 + 85 = 170 need two more
84 x 1.10 = 92.40 84 x 2.35 = 197.4
88 x 2.35 = 206.8 88 x 1.10 = 96.8
= 299.2 = <u>294.20</u>
Answer: 84 sundaes and 88 ice cream cones were sold.
I guess I spent too long and the working out was probably more long-winded than it should've been.
Answer:
D
Step-by-step explanation: