The total cost for the month of October will be $64.5
Step-by-step explanation:
Given,
September charges = $51
Minutes used = 120 minutes
Cost per minutes = $0.30
Cost of 120 minutes = 120*0.30 = $36
Let,
Monthly fee = x
Monthly fee + 120 minutes charges = 51
x+36=51
Subtracting 36 from both sides
The company charges $15 monthly fee.
Minutes used in October = 165 minutes
Let,
y be the total cost for October.
Monthly fee + minutes*per minute charges = Total cost for October
x+165*0.30=y
The total cost for the month of October will be $64.5
Keywords: linear equation, subtraction
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Answer:
12
Step-by-step explanation:
8 white marbles and 48 marbles
each sample contains 2 white
so first
8 divide 2 = 4
then second
48 divide 4= 12
hope this helps
index.
25.x4•y6 = 5.x2y3
What is the index for this expression?
A. 2
B. 4
au
Answer:
A is the answer.
Step-by-step explanation:
2 is the index for this expression.
The index used to simplify the radical expression 25x^4y^6 to 5x^2y^3 is 2 (option A), because each part of the expression was divided by 2 or rather, the square root was taken.
The question is asking about simplifying radicals, specifically what index was used. A key point is to remember that a radical is the inverse operation of applying an exponent, so the unknown index signifies how many times the base (25x^4y^6) in the radical would be multiplied by itself to reach the simplified form (5x^2y^3).
In this case, the index that we used to simplify the radical is 2. This is because the square root was taken of all parts of the under the radical sign and as a result, each part of the expression under the radical was divided by 2. So 25 became 5, x^4 became x^2, and y^6 became y^3. That indicates that the index is 2. Therefore, the answer is A. 2
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Area of the top triangle = 0.5 * 3 * 4 = 6
Area of the parallelogram = 4 * 4 = 16
Answer is 22 units^2