Step-by-step explanation:
First, 480 rounded to the nearest ten is:
480
second 480 rounded to the nearest ten is 481
D, while numbers is the answer
X=-1 and y=3
To solve this, because y is equal to 2x+5, you can substitute 2x+5 into the bottom equation for y.
You now have 3x - (2x + 5) =-6
This can be solved like a normal equation. Multiply each term in the parenthesis by -1.
3x - 2x - 5 = -6
Subtract 2x from 3x
x - 5 = -6
Add 5 to both sides
x=-1
Now you can solve for y by plugging -1 in for x in either equation. Im going to use the top one.
y= 2(-1)+5
y= -2+5
y=3
You can check your answer by plugging in the values for x and y into both equations and making sure both sides equal each other.
A). Simply, subtract 100 percent minus 65 percent, which gives you the answer 35 percent.
b). So, to find the total number you add 280 plus 65 percent, which gives you the answer, 462.
c). To find this, simply subtract 462 minus 280, which gives you the answer, 182.
Hope this helps!
♤MidnightQueen
