Answer:
x = 50°
y = 50°
z = 80°
Step-by-step explanation:
working out x:
angles on a straight line add up to 180°
x + 130° = 180°
subtract 130 on both sides
x = 180° - 130°
x = 50°
working out y:
two vertical lines means that both sides are equal, so both angles are also equal (it's an isosceles triangle). This means that y is the same angle as x = 50°
y = 50°
working out z:
the sum of a triangle add up to 180°
add up the angles of x and y and equate to 180°
50 + 50 + z = 180
100 + z = 180
subtract 100 on both sides
z = 180 - 100
z = 80°
Answer:
3 : 2
Step-by-step explanation:
27 : 18 reduce the numbers = 3 : 2
Answer:
Step-by-step explanation:
1-73
18 inches = 1.5 feet
Multiply 2 on both sides;
36 inches = 3 feet
As for 72 inches, multiply each side by 4
18 inches = 1.5 feet
72 inches = 6 feet
As for 144 inches, divide both sides by 18
1 inch is approximately 0.083
Multiply both sides by 144
144 inches = 12 feet
1-74
a. The scale goes by 20. 0->20->40, etc.
b. The scale goes by 15. 0->15->30, etc.
c. The scale goes by 25. 0->25->50, etc.
d. The scale goes by 50. 0->50->100, etc.
slope = (y2-y1)/(x2-x1)
m =(17-4)/(8-1)
m = 13/7
You have to keep the pairs in the same order
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