# Math!

posted by Anonymous

1) What is the value of 19 + 5a^4 + 3b^2 when a = 2 and b = -4?
(this is not a multiple choice question) but my answer is 147.

2)Combine the like terms to simplify the expression: 4 + 7xy^2 + 5y^3 + 10x -4xy^2 - 8x - 4y^3 + 9
- y^6 + 3x^2y^2 + 10x + 13
- y^3 + 3xy^2 + 2x + 13
- y^3 + 3xy^2 + 10x + 13 *my answer*
- y^3 - 3xy^2 + 2x + 9
3) Which is equal to 4^2 x 4^8
- 4^16
- 4^6
- 4^-6

1. PsyDAG

1) 19 + 5 (16) + 3(16) = 19 + 80 + 48 = 147 (agree)

2) y^3 + 3xy^2 + 2x +13

10x -8x = 2x

3) Right

## Similar Questions

1. ### are these correct

Here is the questions it says to simplify: xyy^2 x^3 and here is the answer x^4 y^3 ---------------------------- here is another one m^3 pmxm^2 x^3 p^5 and here is the answer m^6 p^6 x^4 ---------------------------- and here is another …
2. ### to bobpursley,math,correction

(sqrt3 + 5)(sqrt3 -3) ? multiply that out sqrt3*sqrt3 -3sqrt3 +5sqrt3 -15 now combine and simplify terms. yes the problems is: ((sqrt3)+5)((sqrt3)-3) if i put in my calculator what the squareroot of 3 it will give me 1.7 so if i it
3. ### English for john browm

Let me give you something on "multiple-choice" items that may help you to guess better. Many teachers prepare multiple-choice tests because they are easy to mark and offer the student the advantage of actually seeing what the correct …
4. ### Math

a 10 question multiple choice test has 4 possible answer for each question. A student selects at least 6 correct answers. Find probability of this event: (multiple choice) A) .118 B) .995 C) .068 D) .571
5. ### Alg1

Given 4√50 - 2√8 observe that √50 =√25*2 and √8=√4*2 and that 25 and 4 are perfect squares, so I simplify the expression to 100√2 - 8√2 I can then combine these terms to get 92√2 …
6. ### math

could someone check my work please? I have to solve for 'x' Questions ~ 1. 3x – 19 = -2 Add ‘19’ to each side of the equation ~ -19+19+3x= -2+19 Combine like terms~ -19+19=0 0+3x= -2+19 3x= -2+19 Combine like terms~ -2+19=17
7. ### math

could someone check my work please? I have to solve for 'x' Questions ~ 1. 3x – 19 = -2 Add ‘19’ to each side of the equation ~ -19+19+3x= -2+19 Combine like terms~ -19+19=0 0+3x= -2+19 3x= -2+19 Combine like terms~ -2+19=17
8. ### Statistical concept 68-95-99.7

1. A student taking a midterm exam in Ancient History comes to two questions pertaining to a lecture that he missed, and so he decides to take a random guess on both questions. One question is true-false and the other is multiple choice …
9. ### Stat HW for.

1. A student taking a midterm exam in Ancient History comes to two questions pertaining to a lecture that he missed, and so he decides to take a random guess on both questions. One question is true-false and the other is multiple choice …