Which question do you need to know about
Answer:
L = 
Step-by-step explanation:
Since perimeter is 2L + 2W, and width is 6, then P = 2L + 2*6, and solving for L gives you (P - 12)/2
Hopefully this helps- let me know if you have any questions!
This would be easiest with a graphing calculator.
I recommend changing the mixed fractions to improper ones (so change 2 and 5/6 to 17/5, 1.75 to 7/4, 2 and 1/3 to 7/3, 1.1 to 11/10 and lastly 1.6 to 8/5) If you wish to change .14 to 14/100 and then reduce it to 7/50, then do so.
Your answer should be 1.21.
On a calculator, type in ((17/50+(7/4)x(7/50)). Hit enter. Then input ((7/3)x(11/10)/(8/5)). Hit enter. Then divide the top number and the bottom number.
Answer:
x= 1 y= -1
Step-by-step explanation:
Pick an equation to isloate x or y
5x+2y=3 becomes x=-2y+3/5
Subsitute that into second equation : 2(-2y+3y/5) + 3y=-1
Example and simplify.
Do the same to find x variable
Answer:
The two number are :
x = 1411
y = 1079
Step-by-step explanation:
Let the two numbers = x and y
The sum of two numbers is 2490
x + y = 2490..... Equation 1
If 6.5 percent of one no. is equal to 8.5 percent of the other,
Hence:
6.5% of x = 8.5% of y
0.065x = 0.085y
Make x the subject of the Formula
x = 0.085y/0.065
x = 1.308y
We substitute 1.308y for x Equation 1
x + y = 2490..... Equation 1
1.308y + y = 2490
2.308y = 2490
y = 2490/2.308
y = 1078.8561525
y = 1079
x + y = 2490..... Equation 1
x = 2490 - y
x = 2490 - 1079
x = 1411
