Answer:
D
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180
x = 180° - (90 + 35)° = 180° - 125° = 55°
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Since the triangle is right use the cosine ratio to solve for b
cos35° = 
= 
Multiply both sides by 20
20 × cos35° = b, hence
b = 16.38 ( to 2 dec. places )
Answer:
C
Step-by-step explanation:
A proportional graph is a line. Every line has a slope. The slope is found by subtracting two points as a ratio. The line has points (0,0) and (2,6).
6-0 = 6
2 -0 = 2
The ratio is vertical over horizontal so 6/2 = 3.
The equation is y = 3x.
Answer and Explanation:
Five one-step equations with the answer of 0:
1. x - 8 = -8
2. x - 4 = -4
3. x / 2 = 0
4. x - 3 = -3
5. 5 * x = 0
Five one-step equations with the answer of -5:
1. y + 2 = -3
2. y - 3 = -8
3. y + 10 = 5
4. y * (-2) = 10
5. y / 1 = -5
Five one-step equations with the answer of 4:
1. 4 * z = 16
2. 8 - z = 4
3. 7 + z = 11
4. z / 2 = 2
5. z + 11 = 7
Hope these help!
