Answer:1.570796327
Step-by-step explanation:
Answer:
diagram of truss with some angles missing
What are the measures of the angles located at positions a, b, & c? Note: the figure is symmetrical on the vertical through angle b.
The large triangle is an isosceles triangle. The two angles on the base are equal. Angle a = 35°
We now know two angles in the largest triangle. The third angle, angle b must add to these to make 180°.
35° + 35° + b = 180°
b = 180° - 70°
b = 110°
We now know two angles in a quadrilateral. The two unknown angles, including angle c are equal. All four angles add up to 360°.
2c + 110° + 120° = 360°
2c = 360° - 230°
2c = 130°
c = 65°
Step-by-step explanation:
He included another variable - time. He should have given both brands the same amount of time to work. The only variable should have been the brands. Parker has introduced another variable and therefore his results are invalid.
Distribute 1/4 through the parenthesis:
1/4x + 3/2 + 1/8(x-3)= 1/3(x+4)
Distribute 1/8 through the parenthesis:
1/4x + 3/2 + 1/8x - 3/8= 1/3(x+4)
Distribute 1/3 through the parenthesis:
1/4x + 3/2 + 1/8x - 3/8= 1/3x + 4/3
Subtract the fractions.
1/4x + 9/8 + 1/8x= 1/3x + 4/3
Multiply both sides of the equation by 24.
6x + 27 + 3x= 8x + 32
Collect the like terms:
9x + 27= 8x + 32
Move 8 to the left side, then change the sign.
9x - 8x + 27= 32
Move 27 to the right side, the. change the sign.
9x - 8x= 32 - 27
Collect the like terms.
x= 32 - 27
Subtract the numbers.
32 - 27 = 5
Solution: x = 5