Answer:
Step-by-step explanation:
The function is given.
To find : 
The input for the function f(x) is (a + 1).
Replace x with (a + 1).
Expand brackets.
Simplifying.
Hi there!
In order to use the elimination method, you have to create one variable that has the same coefficient. This is to be able to eliminate one variable and have a one variable equation (which you can then solve).
In your case, we'll have the "x" have the same coefficient by multiplying the top equation by 4 and the bottom equation by 2 :
4( -2x + 3y = -4) → -8x + 12y = -16
2( 4x - 2y = 16) → 8x - 4y = 32
Now that both of your equation have a variable with the same coefficient, you need to choose rather you need to add or subtract the equations in order to get rid of the variable (in this case we want to get rid of the "x").
In your case, you want to add both equation together which will give you :
8y = 16
Now that you only have one variable, all you need to do now is solve the equation for "y" :
8y = 16
Divide each side of the equation by 8
y = 2 → Your answer
There you go! I really hope this helped, if there's anything just let me know! :)
11,000 u think hope I helped
<u><em>Answer:</em></u>
The least amount of money they could have spent is $24
<u><em>Explanation:</em></u>
To get the least amount of money they could have spent, we will need to get the lowest common multiple of both numbers (6 and 8).
This means that we need to find that least number that is found in both multiplication tables
Multiples of 6:
6 * 1 = 6
6 * 2 = 12
6 * 3 = 18
6 * 4 = 24
Multiples of 8:
8 * 1 = 8
8 * 2 = 16
8 * 3 = 24
Noticing the two multiples, we can note that the lowest common multiple is 24.
This means that the lowest amount they could have spent is 24
Hope this helps :)
Answer:
E, 5:2
Step-by-step explanation:
1:2
1/3 x 30 = 10 . 2/3 x 30 = 20
1:1
1/2 x 30 = 15
3:7
3/10 x 30 = 9 7/10 x 30 = 21
4:1
4/5 x 30 = 24 . 1/5 x 30 = 6
5:2
5/7 x 30 = 21.43 (this is a decimal so it does not work)
