Answer:
the answer is 12!
Explanation: they are squared which are on the line of x
Let's pick a variable to solve for. In this case, a good pick would be y. The reason behind this is we can cancel out the x's easily.
2x + 7y = -1
4x - 3y = -19
Multiple the entire equal by 2. In order to keep the top equation true, we must multiple the entire equation.
2(2x + 7y) = -1(2) => 4x + 14y = -2
Now subtract.
4x + 14y = -2
4x - 3y = -19
0x + 17y = 17
0x is basically 0.
17y = 17
Simply divide each side by 17.
17y / 17 = 17 / 17
y = 1
Now substitute it back into one of equations to solve for x. I'll pick 2x + 7y = -1
2x + 7(1) = -1 ; Start
2x + 7 = -1 ; Multiply 1 by 7
2x = -1 - 7 ; Subtract each side by 7
2x = -8 ; -1 - 7 is equal to -8
x = -4 ; Divide both sides by 2
Answer:
Blonde: 54 for mountains
Brunette: 100 for total
Red: 70 for total
Black: 41 for beach
Total: 162 for beach, 197 for mountains, 360 for total
Step-by-step explanation:
add and subtract as needed
According to given information,
Equation of Melinda Earning = 75 + 12x
Equation of Marcus Earning = 15x
Where, x = Number of hours they worked.
Now, we need to calculate when they will have same amount of money, so for that instance they shall equal to each other.
75 + 12x = 15x
15x - 12x = 75
3x = 75
x = 75/3
x = 25
After 25 hours, they will have the money = 15(25) = $375
So, your final answer is $375
Hope this helps!
Answer:
$6
Step-by-step explanation:
5-3
2
12/2
<em><u>6</u></em>