Let
x--------> the number of blue beads
y--------> the number of red beads
we know that
-------> equation
------> equation
equate equation and equation
find the value of x
therefore
the answer is
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1 answer:
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Answer:
<h2>12 4/8</h2>Step-by-step explanation:
1. First step
ADD
7+4=11
7+5=12
so
11
2. Second step
Now simplify
11 12/8 = 12 4/8 = 12 1/2
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Answer:
21 students pass
Step-by-step explanation:
Firstly, you can set up the problem into an equation where the variable X would equal the number of students passing. You put X over the total number of students in the class, turning it into a fraction, then set it equal to the fraction (which is 75% represented as a fraction).
The fraction can be simplified, because 75 and 100 are both multiples of 25, so after canceling out the 25s you would be left with
.
Next, you use the process of cross multiplication which is essentially just multiplying the denominators of both fractions (which would be 28 and 4 in this case) to each side of the equation.
The denominators cancel out leaving you with a simple equation to simplify.
Finally, divide both sides by four in order to isolate the variable.
X = 21.