Answer:
solution set is (x,y) = (7,6)
Step-by-step explanation:
solving by substitution method
2x +y=20--------------1
6x-5y=12---------------2
from equation 1, solve for y
2x+y=20
y= 20-2x------equation 3
adding value of y in equation 2
6x-5y=12
6x-5(20-2x)=12
6x-100+10x=12
16x= 12+100
16x= 112
x= 112/16
x=7
adding value of x in equation 3
y= 20-2x
y= 20- 2(7)
y=20-14
y=6
so solution set (x,y) = (7,6)
87.5
Tall. /. Shadow
3 / 1.74=. X /. 50.75
Cross multiply
152.25= 3x
Divide by 3
X= 87.5
Answer:

Step-by-step explanation:
If Point C <em>was </em>located between A & B, then:

However, we are told Point C is <em>not</em>; therefore:

Answer:
- the value should be twns and ones
Step-by-step explanation:
1 8=tens 8(1 ones)
Answer:
x =79.6
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
sin theta = opp / hypotenuse
sin 31 = 41/ x
x = 41/ sin 31
x = 79.60576508
To the nearest tenth
x =79.6