Market Basket sells chocolate chip cookies . A-Best cookies are 12 cookies for $6.00. A- Okay cookies sell 20 cookies for $ 8.00
1 answer:
The unit price for best cookies is $0.5
The unit price for Okay cookies is $0.4
Step-by-step explanation:
The unit cost is obtained by dividing the total cost by the quantity
Given
<u>Best Cookies:</u>
Cost = $6.00
Quantity = 12
So the unit price will be:
<u>Okay Cookies:</u>
Cost = $8.00
Quantity = 20
The unit price is:
The unit price for best cookies is $0.5
The unit price for Okay cookies is $0.4
Keywords: Unit price, division
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Solving the expression we get value of x:
Step-by-step explanation:
We need to solve the equation and find value of x
Solving:
Multiply -2 with terms inside the bracket
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Multiply (-) sign with terms inside the bracket
Multiply 2x with 18
Add 36x on both sdides
Add 6 on both sides:
Divide both sides by 38
Simplifying:
So, Solving the expression we get value of x:
Keywords: Solving Equations
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Answer:
Step-by-step explanation:
Many scientific and graphing calculators will compute this easily.
The inverse of a square matrix is a square matrix of the same dimensions. That eliminates choices C and D. We can check choices A and B by computing a couple of terms of the product of the given matrix and its "inverse". That product should be the identity matrix, with 1 on the diagonal and 0 elsewhere.
Using matrix A,
(r, c) = (1, 1) = 1(-19) +2(15) +5(-2) = -19 +30 -20 = 1 . . . . correct
(r, c) = (2,3) = 3(-7) +5(6) +9(-1) = -21 +30 =9 = 0 . . . . correct
Using matrix B,
(r, c) = (1, 1) = 1(-19) +2(-2) +5(15) = -19 -4 +75 = 52 . . . . incorrect
Indications are that choice A is appropriate.