The three inside angles of a triangle equal 180 degrees.
All the 3 given angles together to equal 180 to solve for x, then calculate angle A.
x + (x-8) +(3x+13) = 180
Simplify the left side by combing like terms:
5x +5 = 180
Subtract 5 from each side:
5x = 175
Divide both sides by 5:
x = 175/5
x = 35
Now x is known, replace x in the equation for angle A:
3x+13 =
3(35) +13 =
105+13 = 118
Angle A = 118 degrees.
Answer:
Step 1 Eliminate fractions by multiplying all terms by the least common denominator of all fractions.
Step 2 Simplify by combining like terms on each side of the inequality.
Step 3 Add or subtract quantities to obtain the unknown on one side and the numbers on the other.
Step 4 Divide each term of the inequality by the coefficient of the unknown. If the coefficient is positive, the inequality will remain the same. If the coefficient is negative, the inequality will be reversed.
Step 5 Check your answer.
Answer:
the first one is x=-3(16+y/2
secone one is x=11+2y
Step-by-step explanation:
In order to find the average you have to add up all the data values and then find the sum of the data values.
So on average he ran about 82.5 miles.
Answer:
Step-by-step explanation:
3 2/4