The answer to this is C. (28,10) and (22,2).
You first divide 414 by 46 to see how much it costs for 1 lb. After the calculation, you get 9 lb. Then you multiply that by 29 to get 261.
You can get two feet of copper wire of 7.20. Idk the question soooooooo
<u>Define x and y:</u>
Let the first number be x and the second number be y.
<u>Setup the equations:</u>
y + 2x = 10 ----------- (1)
2y + x = 11 ----------- (2)
<u>Solve x;</u>
From (1):
y + 2x = 10
y = 10 - 2x ----------- Sub into (2)
2(10 - 2x) + x = 11
20 - 4x + x = 11
20 - 3x = 11
3x = 20 - 11
3x = 9
x = 3 ----------- Sub into (1)
y + 2(3) = 10
y = 10 - 6
y = 4
<u>Find the numbers:</u>
First number = x = 3
Second number = y = 4
Answer: The two numbers are 3 and 4.
Answer:
-18 b^-4= -18/b^4
Step-by-step explanation:
-3b^4(6b^-8)
Combine coefficients
-3*6 = -18
Combine exponents since the bases are the same, x^y * x^z = x^(x+z)
b^4 *b^ -8
b^(4+-8)
b^ -4
Put back together
-18 b^-4
We also know that x^-y = 1/x^y
-18/b^4