Answer:
42
Step-by-step explanation:
because the math
The difference will be

.
Remember that parentheses are needed for the second polynomial because the negative is distributed to all of its terms.
Answer:
m<A = 70 deg
Step-by-step explanation:
The sum of the measures of the angles of a triangle is 180 deg. Add the three measures and set equal to 180. Solve for x. then use the value of x and the expression for m<A to find the measure of angle A.
m<A + m<B + m<C = 180
5x - 25 + 2x + 10 + 3x + 5 = 180
10x - 10 = 180
10x = 190
x = 19
m<A = 5x - 25 = 5(19) - 25 = 95 - 25 = 70
Answer: m<A = 70 deg
Answer:
For the first one just multiply all of the three numbers
and the second is the same, just multiply and you'll get your answer.
Step-by-step explanation: