Si a=6, b=7.5 y c = - 2, calcula:

a + 2b + 3c =

2a + 3b =

ab + c =

Express the given complex number in the form r (cos θ + i sin θ) = reiθ. 3 - i

A problem states. "There are 7 more girls than boys in a club

A firm had purchases of $16,200, freight charges of $300, and purchases returns and allowances of $1,100 during one month. Its net delivered cost of purchases was: A. $14,800. B. $17,600. C. $16,200. D. $15,400.

You invest $4,900 in an account that pays an interest rate of 5.5%, compounded continuously. Calculate the balance of your account after 6 years. Round your answer to the nearest hundredth.

Identify the most appropriate test to use for the following situation: Quart cartons of milk should contain at least 32 ounces. A sample of 22 cartons was taken and amount of milk in ounces was recorded.

What is 2pi / 5radians in degrees

Gabby is recording her results from flipping a coin. She notices that heads has occurred 18 out of 41 times. What is the frequency of tails?

The standard form of the equation of a parabola is x = y2 - 4y + 20. What is the vertex form of the equation? A. x = (y - 4) 2 + 4 B. x = (y - 2) 2 + 16 C. x = (y - 2) 2 + 4 D. x = (y - 4) 2 + 12

Can somebody explain how to convert fractions with different denominators to fractions with the same denominator

There are 6 boys and 8 girls in a singing group. what fractional part of the group is girls