Question

I NEED HELP SOLVING THIS!! SOMEONE PLEASE HELP!!

Which equation can be used to solve the following word problem?



Jessica has 9 more nickels than dimes, and the total value of her coins is $1.50. How many nickels does she have? Let n represent the number of nickels.


0.10n + 0.05n + 9 = 1.50
0.10(n – 9) + 0.05n = 1.50
0.10n + 0.05(n + 9) = 1.50
0.10(n + 9) + 0.05n = 1.50

Answer 1

@jenny171

Answer 2

@countryboy212

Answer 3

B

Answer 4

What algebraic property does this statement show?

3 + (7 + 2) = (3 + 7) + 2

(Points : 5)
associative property<<
closure property
commutative property
symmetric property


Question 2.2. Solve.

2x – 7 = 6x – 15

(Points : 5)
2<<
3
5
6


Question 3.3. What is the slope of the line that passes through the points (1, 3) and (5, –2)?
(Points : 5)


Question 4.4. The sum of three consecutive integers is –27. What are the numbers?
(Points : 5)
{–5, –9, –13}
{–10, –9, –8}
{–7, –9, –11}
{–11, –13, –15}

(I need help on this one, I didn’t understand it.)
Question 5.5. Which equation can be used to solve the following word problem?


Jessica has 9 more nickels than dimes, and the total value of her coins is $1.50. How many nickels does she have? Let n represent the number of nickels.


(Points : 5)
0.10n + 0.05n + 9 = 1.50
0.10(n – 9) + 0.05n = 1.50<<
0.10n + 0.05(n + 9) = 1.50
0.10(n + 9) + 0.05n = 1.50


Question 6.6. If A = {2, 4, 6, 8, 10} and B = {1, 2, 3, 4, 5}, find A 09_04_ST_15.gif B.
(Points : 5)
{1, 2, 3, 4, 5, 6, 8, 10}
{1, 3, 5}
{2, 4}<<
{7, 9}




Question 8.8. Select the pair of equations whose graphs are perpendicular.
(Points : 5)
A: 5x – 8y = 9
12x – 5y = 7
B: 3x + 6y = 8
y = 3x – 8
C: y = 2x – 7
x + 3y = 3
D: 2y = –3x + 5<<
2x – 3y = 4


Question 9.9. Combine like terms to simplify the expression:

7x + 3y – 2 + 6x – 1 + y2

(Points : 5)
2y3 + 13x – 3
3y3 + 13x2 – 3
y2 + 3y + 13x – 3<<
y2 + 3y + 13x2 – 3



Question 11.11. Given the linear equation x – y = 5, find the slope of its graph.
(Points : 5)
–5
–1<<
1
5




Question 13.13. Evaluate the expression when a = –1.4 and b = –2.7.


|a| – b


(Points : 5)
4.1<<
–1.3
–4.1
1.3



Question 16.16. Solve the system of equations.

3x + 3y = –6
–x + y = 0

(Points : 5)
x = –1; y = –1<<
x = 10; y = –3
x = 22; y = 7
x = 14; y = 5

Answer 5

@jenny171

Answer 6

These were the ones lol @jenny171

Answer 7

3. -5/4

Answer 8

Is that the only one I got wrong?

Answer 9

@jenny171

Answer 10

11: 1

Answer 11

13: -1.3

Answer 12

Can you check my answers @Nnesha please?

Answer 13

omg that's a lot :P
which one i have to check it ??

Answer 14

I put the answers in "<<" so you know I put that as my answer

Answer 15

lol @Nnesha sorry to bother you

Answer 16

replace x and y by their answer choices you got
if you get both side equal then ur answer is right simple :)

Answer 17

and u can use calculator ;) to check ur answer

Answer 18

Which one are you talking about?

Answer 19

wait you tagged me bec i'm human calculator ^^:P:P
okay then wait

Answer 20

lol xD @Nnesha

Answer 21

okay so last one
replace x and y by their values and then solve left side if both side equal then that is ur answer