We know opposite angles in the parallelogram is congruent:
let x to be the unknown angle:
360=2(110)+2x
360=220+2x
140=2x
x=70
ECF is also 110 because of parallel lines and corresponding angles:
110+x+y=180
110+30+y=180
y=40
so DAE is 40
Answer:
x = 13
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Geometry</u>
Step-by-step explanation:
<u>Step 1: Set up equation</u>
3x = x + 26
<u>Step 2: Solve for </u><em><u>x</u></em>
- Subtract <em>x</em> on both sides: 2x = 26
- Divide 2 on both sides: x = 13
Pineapple tarts = 4/9
Coconut tarts = 1 - 4/9 = 5/9
gave 1/2 of the pineapple tarts
1/2 x 4/9 = 2/9
Pineapple tarts left = 4/9 - 2/9 = 2/9
gave 2/5 of the coconut tarts
2/5 x 5/9 = 2/9
Coconut tarts left = 2/5 - 2/9 = 8/45
Tarts left = 2/9 + 8/45 = 2/5
2/5 = 60 tarts
1/5 = 60 ÷ 2 = 30 tarts
5/5 = 30 x 5 = 150 tarts
He baked 150 tarts
4x+3y=7
3x-2y=9
12x+9y=21
12x-8y=36
^^Multiply top equation by 3 and multiply bottom equation by 4
12x+9y=36
- 12x-8y=36
17y=-15
^^Then subtract those two new equations
17y/17= -15/17
Y= -0.88
^^Next divide both sides by 17
4x+3* -0.88=7
4x + (-2.64) =7
-(-2.64) -(-2.64)
4x = 9.64
4x/4=9.64/4
X=2.41
^^then choose on equation and put your new y in the y spot and solve.
X=2.41
Y=-0.88
Your point/coordinate is (2.41,-.88)
Answer:
The answer should be 9.
Step-by-step explanation: