Simplify: (-7a - 19c) - (-12a + 30c) - (-21a - 11c)

-16a - 60c

2a + 22c

26a + 38c

26a - 38c

When ∆A′B′C′ is reflected across the line x = - 2 to form ∆A″B″C″, vertex of ∆A″B″C″ will have the same coordinates as B′.

Ratio of measures in a triangle are 8:3:4 find the measure of the angles

7m+8=71 how do I answer this question it's a two-step equation

What is the value of 5 in 356,039,763

Rewrite x - 2y = 8 using function notation.

What is $16.50 x 7%

3. "a varies directly with b". If a = 4 when b = 21, find a when b-7.

Evaluate the expression using order of operations 8-3[{4+2}+6]=?

Let n be a prime number. Which of the following statements CAN be true? A. n is a perfect square B. n is even C. n is irrational D. nis negative E n is divisible by 4

Katie practiced the flute for 45 minutes. Then, she ate a snack for 15 minutes. Next, she watched televison for 30 minutes, until 6:00 P. m. At what time did Katie start practicing the flute?