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Bumek [7]
4 years ago
13

Jessi sold half her comic books. Then, she bought 9 more. She now has 11 total. How many did she begin with?

Mathematics
1 answer:
Alex Ar [27]4 years ago
6 0

Answer:X+9=11

9-9|11-9

X=2

Step-by-step explanation:When the beginning number is unknown we use “x” to be a place holder. If she got 9 more books we would add 9 to the equation. Finally if 11 is the total, the end of the equation would equal 11.

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Solve for w, x, and y. Show your work.
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First of all, the left triangle is an equilateral triangle. Which means that all the interior angles are 60 degrees.

4w=60

w=15

Then all 3 sides are equal thus we can set up equation 3x-y=4y then simplify,

3x=5y

Going to the triangle on the right its isosceles we can set up equation 2x+50=180

2x=130

x=75

Substitute this back into equation above 3x=5y

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Therefore

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Done!

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You invest $1500 in a bank account that has a 3% annual interest rate, compounded continuously. How much will you have in 15 yea
Mandarinka [93]
We use the formula:
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3 years ago
How to rewrite 2+2+2+2+2 into a multiplication problem?
inna [77]

Answer:

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Step-by-step explanation:

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5 0
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Sum of x and it’s square is equal to y times z
ludmilkaskok [199]

The algebraic representation of the statement is x + x² - yz = 0

<h3>What are algebraic expressions?</h3>

Algebraic expressions brings the idea of creating or expressing numbers using letters or alphabets without specifying their actual values.

From the information given , we have that;

  • sum of x and it's square = x + x²
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Now, let's equate the expressions;

x + x² = y × z

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Let's make into quadratic form

x + x² - yz = 0

Thus, the algebraic representation of the statement is x + x² - yz = 0

Learn more about algebraic expressions here:

brainly.com/question/723406

#SPJ1

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ollegr [7]
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