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

An assembly consists of three mechanical components. Suppose that the probabilities that the first, second, and third components meet specifications are 0.95, 0.98, and 0.99, respectively. Assume that the components are independent.

The diameter of a circle is 16cm By what amount must the radius be decreased in order to decrease the area by 48pi square centimeters.

Divide. 2 1/3 : 2/5 A) 9/15 B) 4/5 C) 14/15 D) 5 5/6

Here are the first 5 terms of an arithmetic sequence. 6, 11, 16, 21, 26, find the expression, in the terms of n, for the nth term of the sequence. I will mark you as brainliest. hurry!

How many lengths of shelving 26 in long can be cut from an 8-ft 1in * 8-in board?

Which of the following is a root of the polynomial shown below? f (x) = x^3-4x^2-11x+30 a. - 3 b. 0 c. 1 d. 6

T=6 3r+3s+4t=27 2r+2s-t=-4

Use properties to find the sum 34+0+18+26

A car can travel 25 miles per gallon. Approximately how many gallons of fuel will the car need to travel 30 km? [1 mile = 1.6 km] 0.05 0.52 0.75 0.83

Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent. 4x+3y=1 6x-1y=-15