x = 9y
x + 1.5y = 12
x + y = 9
x + 9y = 12
x = 1.5y
9x + y = 12
x = 1.5y
The system of equations that represents the given statements is
x + 1.5y = 12
x + y = 9
Where x is the number of pencils and y is the number of pens that Shawn bought.
To write an equation:
Given that,
A pencil at a stationery store costs - $1
and A pen costs - $1.50
Shawn spent $12 at the store. He bought a total of 9 items.
So,
Consider number of pencil = x and number of pens = y
Since he bought a total of 9 items, we can add the number of pencils and pens and equate the sum with 9
I.e., x + y = 9 ...(i)
We have cost for a single pencil and a single pen
So, to get the cost for the total number of pencils and pens that he bought, multiply the cost of a single one by the number of pencils and pens. I.e.,
1 × x and 1.50 × y
Since it is given that he spent $12 for both pencils and pens, we can write
x + 1.5 y = 12 ...(ii)
Thus, from equations (i) and (ii), the system we can write
x + 1.5 y = 12
x + y = 9
So, option 2 is the correctset of equations for the given system.
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Answer:
27 pi in³
Step-by-step explanation:
I just took a test on Plato/Edmentum with this question and this was the right answer
~Please mark me as brainliest :)
45%
as a fraction in simplest form.
selecting a penny?
selecting a nickel?
not selecting a dime?
selecting a dime or a quarter?
The probability of selecting a penny is 4/15
The probability of selecting a nickel is 1/3
The probability of selecting a dime is 7/30
The probability of selecting a dime or a quarter is 2/5
From the formula for probability,
Total number of possible outcomes = 30
The probability of selecting a penny is 4/15
The probability of selecting a nickel is 1/3
The probability of selecting a dime is 7/30
First, we will calculate the probability of selecting a quarter
Then, the probability of selecting a dime or a quarter is
The probability of selecting a dime or a quarter is 2/5
Hence,
The probability of selecting a penny is 4/15
The probability of selecting a nickel is 1/3
The probability of selecting a dime is 7/30
The probability of selecting a dime or a quarter is 2/5
Learn more on Probability here: brainly.com/question/251701
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