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4 years ago

How do you do this solved by substitution?

Mathematics

1 answer:

ladessa [460]4 years ago

3 0

X=-12-3y
2(-12-3y) - y = -3
-24 - 6y - y = -3
-7y = 21
y = -3

x = -12 - 3(-3)
x = -3

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On a string instrument, the

ioda

Answer:

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Step-by-step explanation:

8 0

3 years ago

How do you answer this pls help 7^2+4^3÷2^5

lana66690 [7]

Assignment: $\bold{Solve \ Equation: \ 7^2 \ + \ 4^3 \ \div 2^5}$

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Answer: $\boxed{\bold{51}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Apply PEMDAS Order Of Operations

Note: $\bold{PEMDAS: \ Parenthesis, \ Exponents, \ Multiply, \ Divide, \ Add, \ Subtract}$

$\bold{7^2: \ 49}$

[ Step Two ] Rewrite Equation

$\bold{49+64\div \:2^5}$

[ Step Three ] Calculate Exponents

$\bold{4^3: \ 64}$

[ Step Four ] Rewrite Equation

$\bold{49+64\div \:2^5}$

[ Step Five ] Calculate Exponents

$\bold{2^5: \ 32}$

[ Step Six ] Rewrite Equation

$\bold{49+64\div \:32}$

[ Step Seven ] Divide

$\bold{64\div \:32: \ 2}$

[ Step Eight ] Rewrite Equation

$\bold{49+2}$

[ Step Nine ] Add

$\bold{51}$

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$\bold{\rightarrow Mordancy \leftarrow}$

5 0

4 years ago

Read 2 more answers

kupik [55]

Answer:

Nadia's total earnings in month is $3196.1

Explanation:

Given salary of Nadia is $3,300 per month including a 3.25% commission

The salary consists of fixed salary and commission

Therefore, Salary = Fixed salary + Commission

Assume the fixed salary to be x

Putting values in equation

3300 = x + 3.25% of x

3300 = x + $\frac{3.25}{100} x$

3300 * 100 = 103.25x

x = $\frac{3300 * 100}{103.25}$

x = $3196.1 per month

Therefore, the fixed salary of Nadia is $3196.1 per month

4 0

3 years ago

What is the prime factorization of 440?

lawyer [7]

Answer:

I would say the correct answer is 2^3 • 5 • 11

Step-by-step explanation:

To find the prime factors, you start by dividing the number by the first prime number, which is 2. If there is not a remainder, meaning you can divide evenly, then 2 is a factor of the number. Continue dividing by 2 until you cannot divide evenly anymore. Write down how many 2's you were able to divide by evenly. Now try dividing by the next prime factor, which is 3. The goal is to get to a quotient of 1.Here are the first several prime factors: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29...

Let's start by dividing 440 by 2 

440 ÷ 2 = 220 - No remainder! 2 is one of the factors!

220 ÷ 2 = 110 - No remainder! 2 is one of the factors!

110 ÷ 2 = 55 - No remainder! 2 is one of the factors!

55 ÷ 2 = 27.5 - There is a remainder. We can't divide by 2 even anymore. Let's try the next prime number

55 ÷ 3 = 18.3333 - This has a remainder. 3 is not a factor.

55 ÷ 5 = 11 - No remainder! 5 is one of the factors!

11 ÷ 5 = 2.2 -There is a remainder. We can't divide by 5 evenly anymore. Let's try the next prime number

11 ÷ 7 = 1.5714 - This has a remainder. 7 is not a factor.

11 ÷ 11 = 1 - No remainder! 11 is one of the factors!

If we put all of it together we have the factors 2 x 2 x 2 x 5 x 11 = 440. It can also be written in exponential form as 2^3 x 5^1 x 11^1.

here is also the factor tree method : -

7 0

3 years ago

Simplify -9/6 divided by 3/-2. PLEASE HELP!

Pachacha [2.7K]

-9/6 / -3/2

You can write it as, 9/6 * 2/3 = 3/3 = 1

3 0

3 years ago