In this system of equations, I'll do elimination. Ok, so what we are trying to do is to eliminate a variable, but we can't. So since -2y is negative, and y has a coefficient of 1 and is positive, let's multiply the first whole equation by 2.
2 times (3x+y=11) is 6x+2y=22. (I just used distributive property.) Now let's add from left to right.
6x plus x is 7x, 2y plus -2y is 0, and 22 plus 6 is 28. Now we have this simple equation, 7x=28. We can simply divide each side by 7, to get x as 4. So x=4 in this set of equations. Now all we need to do is plug x in the equation then solve for y. For this system of equations, I'll use the first equation, because it is easier. So I'll plug x as 4 into the equation to get 12+y=11. Now we can simply solve for y. 11-12 is -1, so y must equal -1. So y=-1. Therefore, x=4 and y=-1. Hope I helped.
I day = 24 hours
90/24 = ?
90/24 = 3 times
3 days and 75% of a day.
Now we need to find 75% of 25.
18.75 hours
Answer: 3 days and 18.75 hours
Answer: 15/36
Step-by-step explanation:
You have 36 possible dice outcomes but only 15 of them have a sum of less than 7.
For the given values $55 spent on the soccer team on supplies and they earned $275 on car wash including all the tips they got. Solution:-55 (because of the expense of the team on supplies) + 275 (because of the profit of car wash business of the team)-55 +275 = 220 The team car wash profit is $220 after paying for the supplies.An integer is a whole number that can be negative, positive, or can also be zero. An Integer cannot be fraction or decimal, it is any number that can be written without a fractional component. A sum of an integer using the formula (N(N + 1))/2, it is the simplified form.
