What is an expression for "the sum of (a+7) and 3a"

How to write an equation with an undefined slope?

The number has three digits that add up to 10. when it is multiplied by 0.5, the product is 6.35. what is the number?

Is 2 squared between 1.4 and 1.5

whats the answer to this 3x2-6x+3=0

What is. 645 converted into a fraction in simplest form

What is the hydronium ion (H30+) concentration in milk if it has a ph of 8.2

Let f (x) = 3x2 - 2x + 6 and g (x) = 7x - 4. Identify the rule for f+g. A 3x2 + 7x + 10 B. 3x2 - 9x + 10 C. 147x2 - 182x + 62 D. 3x2 + 5x + 2

Write 0.000000123 as a power of 10.

Determine which solution is correct for solving 5/7y = 6 using reciprocals

Each newborn baby has a probability of approximately 0.49 of being female and 0.51 of being male. for a family with four children, let x = the number of children who are girls.