Answer:
a = 
Step-by-step explanation:
Step 1: Write out equation
2b = 2cd + ad²
Step 2: Subtract 2cd on both sides
2b - 2cd = ad²
Step 3: Divide both sides by d²
a =
Answer:
$0.38
Step-by-step explanation:
First we devide 25 and 9.50 so 9.50 divided by 25 equals 0.38. A dollar is $1 or $1.00 making 0.38 less then a dollar since $0.38 would be the price per card.
Jay caught 18 fish and Blair caught 9.
Here's why.
Jay caught 2 times as many as blair. So let's say the fish caught by blair is represented by the variable, x. The number of fish caught by Jay would then be 2x.
So, 27 is the number of fish they both caught together. So then...
27=x+2x
This equation can be simplified to be 27=3x.
So, we'll need to find the value of x first. Divide each side by 3 to get the x by itself. 27/3 is 9. 3x/3 is x. So 9=x.
We now have the number of fish Blair caught, so to get the number jay caught, we double this number. 9 times 2 is 18, so Jay caught 18 fish and Blair caught 9.
The given equations are;
2x-y=8......(i)
3x+y=17......(ii)
Adding equation (i) and (ii), we get
5x=25 ( as +y and -y is canceled out during addition)
Hence x=5
Now
Substituting the value of x in equation (i)
2x5-y=8
10-y=8
Hence y=2
