Answer:
x=
x =
Step-by-step explanation:
8x−5y=11 = Let's solve for x.
8x−5y=11
Step 1: Add 5y to both sides.
8x−5y+5y=11+5y
8x=5y+11
Step 2: Divide both sides by 8.
8x
8
=
5y+11
8
x=
5
8
y+
11
8
4x−3y=5= Let's solve for x.
4x−3y=5
Step 1: Add 3y to both sides.
4x−3y+3y=5+3y
4x=3y+5
Step 2: Divide both sides by 4.
4x
4
=
3y+5
4
x=
3
4
y+
5
4
Answer:
you have to add each
Step-by-step explanation:
Answer:
60° : 75° : 120° : 105°
Step-by-step explanation:
I like to work these by considering the relationship between a "ratio unit" and the angle it represents. Here, the sum of ratio units is 4+5+8+7 = 24. The sum of angles in a quadrilateral is 360°, so each ratio unit must stand for ...
360°/24 = 15°
Multiplying the ratio units by this value, we find the angles to be ...
(4 : 5 : 8 : 7) × 15° = 60° : 75° : 120° : 105°