Let's find the formula for a rectangle:
2L+2W= 90
Now we know the length is equal to 6 more than 2 times the width, let's make the equation.
L=2w+6
Let's plug that in for L in the first equation.
2(2w+6)+2w=90
4w+12+2w
6w+12=90
6w=78
78÷6=13=w
The width is 13, but we need the length. We know the length is equal to 6 more than 2 times the width.
13×2= 26+6= 32
So, the length of the rectangle is 32 ft.
Answer:
A) 24
Step-by-step explanation:
Total weight - loaded weight = space remaining in the trailer: 1050kg - 82kg = 968kg
space remaining ÷ the number of transport: 968 ÷ 40 = 24.2 OR 24
Hope it helps you
Answer:
1 7/8
Step-by-step explanation:
The first step is to find the least common denominator of 3/8 and 9/4, or the least common multiple of 8 and 4. LCD is 8. Make the denominators the same as the LCD.
-3/8 + 9/4x2
-3/8 + 18/8
-3+18/8
15/8
1 7/8
Hope this helps!:) Best of luck!
For the elimination method, you need to have one variable that eliminates and cancel each other out. In this question lets use the variable y. A common denominator for y in the equation would be -8 since we want the variables y to cancel out. We already have 8y for the second equation. Now to get -8y for the first equation we need to multiply everything by -2 this would leave us with 14x+-8y=2. Now all you have to do is add the two equations. 10x=-10. So the final answer for x is -1. To find y just substitute the x value in the first equation which would give you y=-2. See that wasn't so hard:))
Answer:
y=x^2-13x+42
Step-by-step explanation:
y=(x-6) times (x-7)
y=x^2-7x-6x+42
collect like terms
y=x^2-13x+42
There you go