Answer:
40°, 60° and 80°
Step-by-step explanation:
sum the parts of the ratio, 2 + 3 + 4 = 9 parts
Divide 180° ( sum of angles in a triangle) by 9 to find the value of one part of the ratio.
180° ÷ 9 = 20° ← value of 1 part of the ratio , then
2 parts = 2 × 20° = 40°
3 parts = 3 × 20° = 60°
4 parts = 4 × 20° = 80°
The angles in the triangle are 40°, 60°, 80°
the slope is the number that x is multiplied by so the answer is C)7
Step-by-step explanation:
20+12+90+20
40+12+90
142
180-142
38
I think it is 38
But i don't understand is round to nearest angle tho sorry
Answer: A. Infinite number of solutions
Step-by-step explanation:
The given system of equations is expressed as
x + 3y = 5- - - - - - - - - - - - - -1
4x + 12y = 20- - - - - - - - - - - 2
We would apply the method of substitution. From equation 1, we would make x the subject by subtracting 3y from the left hand side and the right hand side of the equation. It becomes
x + 3y - 3y = 5 - 3y
x = 5 - 3y
Substituting x = 5 - 3y into equation 2, it becomes
4(5 - 3y) + 12y = 20
20 - 12y + 12y = 20
20 = 20
Therefore, the system of equations has an infinite number of solutions because as many values of x and y that satisfy the first equation, they would also satisfy the second equation.
