Answer:i belive the answer is 4
Step-by-step explanation:
STEP
1
:
y
Simplify —
3
Equation at the end of step
1
:
y
(((18•(x5))•(y3))+((6•(x2))•(y4)))+((((24•(x6))•—)•x)•y)
3
STEP
2
:
Equation at the end of step
2
:
y
(((18•(x5))•(y3))+((6•(x2))•(y4)))+((((23•3x6)•—)•x)•y)
3
STEP
3
:
Canceling Out:
3.1 Canceling out 3 as it appears on both sides of the fraction line
Equation at the end of step
3
:
(((18•(x5))•(y3))+((6•(x2))•(y4)))+((8x6y•x)•y)
STEP
4
:
Equation at the end of step
4
:
(((18•(x5))•(y3))+((2•3x2)•y4))+8x7y2
STEP
5
:
Equation at the end of step
5
:
(((2•32x5) • y3) + (2•3x2y4)) + 8x7y2
STEP
6
:
STEP
7
:
Pulling out like terms
7.1 Pull out like factors :
8x7y2 + 18x5y3 + 6x2y4 = 2x2y2 • (4x5 + 9x3y + 3y2)
Trying to factor a multi variable polynomial :
7.2 Factoring 4x5 + 9x3y + 3y2
Try to factor this multi-variable trinomial using trial and error
Factorization fails
Final result :
2x2y2 • (4x5 + 9x3y + 3y2)
Answer:
C) 0.066...
Step-by-step explanation:
1/15 = 0.066...
You could eliminate B and C as 15 (numerator from question) is not a multiple of 10. You can eliminate A as the numerator of 15 from the question is larger than 10 and will result in a number less than 0.1.
The <em>correct answers</em> are:
B) $25; and
D) $50.
Explanation:
Eric got a 20% discount. This means he paid 100%-20% = 80% of the retail value.
Let C represent the cost of CDs and S represent the cost of sweatshirts. For Eric's purchase, we have the equation:
0.8(3C+S) = 100
Using the distributive property, we have
0.8(3C) + 0.8(S) = 100
2.4C + 0.8S = 100
Neil got a 40% discount; this means he paid 100%-40% = 60% of the retail value. We have the following equation for him:
0.6(4C+2S) = 120
Using the distributive property, we have:
0.6(4C)+0.6(2S) = 120
2.4C + 1.2S = 120
This gives us the system:

Since the coefficient of C is the same in each equation, we will eliminate this variable. We do this by subtracting the equations:

We divide both sides by -0.4:
-0.4S/-0.4 = -20/-0.4
S = 50
Each sweatshirt is $50.
We will substitute this into the first equation:
2.4C+0.8(50) = 100
2.4C + 40 = 100
Subtract 40 from each side:
2.4C+40-40 = 100-40
2.4C = 60
Divide each side by 2.4:
2.4C/2.4 = 60/2.4
C = 25
Each CD is $25.
Step-by-step explanation:


