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Ivan
3 years ago
15

Bryan’s monthly electric bill is determined by adding a flat administration fee to the product of the number of kilowatt hours o

f electricity used and the cost per kilowatt hour. When he uses 1,100 kilowatt hours of electricity, his bill is $113. When he uses 1,500 kilowatt hours of electricity, his bill is $153. What is the monthly administration fee? $
Mathematics
1 answer:
Alexandra [31]3 years ago
4 0

Answer:

3

Step-by-step explanation:

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A swimming pool is drained at the end of each summer. Fifteen gallons of water are removed per minute. How much does the amount
BartSMP [9]
Multiplying -15 by 60 yields -900, so the amount of water in the pool changes by -900 gallons in one hour.
7 0
3 years ago
Whts X+y x 9 +3 +4 ?
babunello [35]

Expression simplified: x+9y+7

Step-by-step explanation:

The expression that we have in this problem is:

x+y\cdot 9 +3 +4

The first type of operation that we have to solve in such expression are multiplication/division.

In this expression, there is only one multiplication, that is:

y\cdot 9 = 9y

So we can rewrite the expression as

x+9y+3+4

Now we can evaluate the sum of the similar terms: in this case, similar terms are only 3 and 4, and their sum is

3+4=7

Therefore, the expression can be rewritten as

x+9y+7

Learn more about simplifying expressions:

brainly.com/question/7014769

brainly.com/question/11007572

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6 0
3 years ago
How to solve the equation
tatiyna

Answer:

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Step-by-step explanation:

hahaha thanks for the points ha

8 0
2 years ago
Given that f(x) = x^2 - 4x +1, find the value of m if f(m) = -3
iragen [17]

a. Answer:  m = 2

<u>Step-by-step explanation:</u>

f(x) = x² - 4x + 1

f(m) = m² - 4m + 1 = -3

         m² - 4m + 4 = 0

         (m - 2)(m - 2) = 0

               m = 2

***************************************************

b. Answer:  k = 2 and k = 5

<u>Step-by-step explanation:</u>

f(x) = x² - 7x + 14

f(k) = k² - 7k + 14 = 4

        k² - 7k + 10 = 0

        (k - 2)(k - 5) = 0

        k = 2   k = 5

3 0
3 years ago
What is the perimeter of a regular heptagon with a side length of 9 inches?
jok3333 [9.3K]
What kind of Question is that. That is some real math right there.
6 0
3 years ago
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