Any answers? no need for an explanation if you want to sure, the answer would be appreciated!

The given system of equations has only one solution

Solution:

Given system of equations are:

2y = x - 9 ------- eqn 1

5x - 4y = 18 ------- eqn 2

Let us first solve the system of equations

From eqn 1,

x = 2y + 9 ----- eqn 3

Substitute eqn 3 in eqn 2

5(2y + 9) - 4y = 18

10y + 45 - 4y = 18

6y = 18 - 45

6y = -27

Substitute the value of "y" in eqn 3

Thus

Thus the given system of equations has only one solution

answer: true

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!