Mathematics, 18.02.2021 06:50, kgreene405

7. If a = 3 and b = -1, find the value of 2a - 2b. A. -8
B.-4
C. 4
D. 8
8. Evaluate: 2x2y, when x = -3 and y = 5
A-90 B. -30 C. 30
D. 90
Find the value of 4(m-n) if m= 5 and n = -1.
A. 36
B. 24
C. 12
D. -12
10. What will be the value of x²+ y? if x = 4 and y = 2 ?
x-y
C. 8
A. 1
B. 4
D. 10
11. Which of the following is NOT a polynomial?
B. 1
C. V5 xy
A. 5
D.
3a
12. Which of the following is a trinomial?
A. 3x3
C. 4(a+1)
B. -8xyz
D. a+b+c

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 13:00, Kazya4

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

Answers: 1

continue

Mathematics, 21.06.2019 19:10, dooderh

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Answers: 1

continue

Mathematics, 21.06.2019 22:10, Lukeadams

What is the circumference of a circle with an area of 50.24 cm²?

Answers: 2

continue

Mathematics, 22.06.2019 00:30, natalie857123

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i

Answers: 1

continue

Do you know the correct answer?

7. If a = 3 and b = -1, find the value of 2a - 2b. A. -8
B.-4
C. 4
D. 8
8. Eval...