Which expression is equivalent to 6a + 15?

- 6 (a + 5)

- 3 (2a + 5)

- 3 (3a + 12)

- 6 (a + 12)

Simplify the expression by combing any like terms 2a+3-5a+8b

a house is valued £210 000, correct to 2 significant figures, what is the lowest possible value of the house and the highest possible value of the house?

What is the equation of a straight line is parallel to y = 4x-1?

Explain why (cos ((theta)) ? + (sin ((theta)) 2 = 1

Which of the following is not a component of a payroll system? Payroll sinking fund Employee earning fund Payroll record Payroll bank account

Sam packed 42kg of rice into one big bag and 6 small ones which are of the same size. the big bag contained 3/7 of the rice. how many kilograms of rice did each small bag contained?

Which of the following expressions is written in scientific notation? 0.3 x 104 2 x 10-5 10 x 103 12 x 10-3

What is the slope of the line? y+3 = - 4 (9x+7)

A college has a 30% completion rate, meaning that 30% of all students who start at the college complete their studies. The president of the college sets a goal of increas ing this number by 50%. What will the completion rate goal be as a percent?

If the nth partial sum of the sequence an is given by n Sigma 2k+4 k=1 Then what is the nth term of the sequence? A. 6 B. 2n+4 C. 6+8+10+12 + ... + (2n+4) D. 2 (1) + 4+2 (n) + 4