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uysha [10]
3 years ago
12

you had $26 in your pocket. You purchased x pens at $3.50 each. You now have $8.50 in your pocket. write and solve an equation t

o find the number of pens purchased.
Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0
Equation $26 - 3.50x = $8.50
x= 5 pens was bought


3.50 26.00
× 5= - 8.50= <---- when you subtract
17.50 17.50. the total and how
much is left over
you get $17.50
$17.50 equals how much was spent when buying the pens
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The mean of 12 numbers is 20 and the mean of another 8 numbers is 25 find the mean of the 20 numbers
AysviL [449]

Answer:

22

Step-by-step explanation:

mean is calculated as

mean = \frac{sum}{count}

Given the mean of 12 numbers is 20 , then

\frac{sum}{12} = 20 ( multiply both sides by 12 )

sum = 240

Given the mean of 8 numbers is 25 , then

\frac{sum}{8} = 25 ( multiply both sides by 8 )

sum = 200

Total sum of the 20 numbers = 240 + 200 = 440, then mean of 20 numbers is

mean = \frac{440}{20} = 22

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a

Step-by-step explanation:

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Step-by-step explanation:

Hope this helps!! Good luck!!

6 0
4 years ago
Read 2 more answers
A)Loss is denoted by a negative integer and profit is denoted by a positive integer. A
Rashid [163]

Answer:

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Step-by-step explanation:

Given :

Profit of 10 on white cement

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Number of white cement sold = 325 bags

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Total profit made on sale of white cement :

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Total profit or loss :

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6 0
3 years ago
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Kaylis [27]
X+y=11

x is longer than y
x>y
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sub back
x+y=11
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3 years ago
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