Answer: C. $52 = 10 + 7x
Step-by-step explanation:
Answer:
#1- linear
#2- linear
#3- linear
#4- nonlinear
Step-by-step explanation:
A system of nonlinear equations is a system of two or more equations in two or more variables containing at least one equation that is not linear. A linear equation looks like any other equation. It is made up of two expressions set equal to each other. A non linear looks like a u shape when graphed and a linear equation looks like a diagonal or straight line when graphed.
this site can help too: desmos graphing calculator
From the picture, we can see that
![\sin\theta=\dfrac HB\implies\dfrac{\sin\theta}C=\dfrac H{BC}](https://tex.z-dn.net/?f=%5Csin%5Ctheta%3D%5Cdfrac%20HB%5Cimplies%5Cdfrac%7B%5Csin%5Ctheta%7DC%3D%5Cdfrac%20H%7BBC%7D)
![\sin\beta=\dfrac HC\implies\dfrac{\sin\beta}B=\dfrac H{BC}](https://tex.z-dn.net/?f=%5Csin%5Cbeta%3D%5Cdfrac%20HC%5Cimplies%5Cdfrac%7B%5Csin%5Cbeta%7DB%3D%5Cdfrac%20H%7BBC%7D)
which means
![\dfrac{\sin\theta}C=\dfrac{\sin\beta}B](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Csin%5Ctheta%7DC%3D%5Cdfrac%7B%5Csin%5Cbeta%7DB)
Answer:
60°
Step-by-step explanation:
angle A +angle B +angle C = 180
30° +B+90°= 180
120°+B=180°
B=180°-120°
B=60°
Add the total bills:
23.59 + 40.65 + 30.50 + 15.68 = 110.42
Divide his tips by the total bills to get the rate of the tips
17.67 ÷ 110.42 = 0.16
0.16 x 100% = 16%
His tips were 16% of the bills.
To check:
23.59 x 16% = 3.7744
40.65 x 16% = 6.504
30.50 x 16% = 4.88
15.68 x 16% = <u>2.5088</u>
total tips 17.6672 rounded off to 17.67