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3 years ago

Identify the law illustrated by:20x +50 is the same as 50+20x

Mathematics

2 answers:

Alisiya [41]3 years ago

8 0

Answer:

The law is the Inverse law of Addition/Multiplication

Step-by-step explanation:

lions [1.4K]3 years ago

7 0

Answer:

commutative law of addition

Step-by-step explanation:

commutative law of addition is: a+b=b+a

In your example a=20x and b=50.

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( 5 + i ) + ( 1 - 2i )

blondinia [14]

The solution is, (5+I) + (1-2i) = 6-i

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2 years ago

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What is the coefficient of q in the sum of these two expressions? (23q – 34) and (–16q – r) NEED HELPPP

jeyben [28]

Answer:

The coefficient of $q$ is $7$

Step-by-step explanation:

The two expressions are

$23q-34$ and $-16q-r$ .

The sum of the two expressions is

$23q-34+-16q-r$

When we group like terms the expression will be,

$=23q-16q-r-34$

When we simplify the expression will now be

$=7q-r-34$

The coefficient of $q$ is the constant behind $q$ in the expression.

The coefficient of $q$ is therefore $7$ .

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3 years ago

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nignag [31]

I don’t know I need help to

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1 year ago

How do I solve this using the substitution method 3x+2y=9 x-5y=4

Harlamova29_29 [7]

$\bf \begin{cases} 3x+2y=9\\ x-5y=4 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{solving the 2nd equation for "y"}}{x-5y = 4\implies x-4-5y=0}\implies x-4=5y\implies \cfrac{x-4}{5}=y \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{substituting on the 1st equation}}{3x+2\left(\cfrac{x-4}{5} \right) = 9}\implies 3x+\cfrac{2(x-4)}{5}=9 \\\\\\ \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{5}}{5\left( 3x+\cfrac{2(x-4)}{5} \right)=5(9)}\implies 15x+2(x-4)=45$

$\bf 15x+2x-8=45\implies 17x-8=45\implies 17x=53\implies \boxed{x=\cfrac{53}{17}} \\\\\\ \stackrel{\textit{we know that}}{\cfrac{x-4}{5}=y}\implies \cfrac{\left(\frac{53}{17} -4 \right)}{5}=y\implies \cfrac{\left(\frac{53-68}{17} \right)}{5}=y\implies \cfrac{~~\frac{-15}{17}~~}{5}=y \\\\\\ \cfrac{~~\frac{-15}{17}~~}{\frac{5}{1}}=y\implies \cfrac{-15}{17}\cdot \cfrac{1}{5}=y\implies \boxed{-\cfrac{3}{17}=y} \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \left( \frac{53}{17}~~,~~-\frac{3}{17} \right)~\hfill$

8 0

3 years ago

Read 2 more answers

Please help will give 50points

Lady bird [3.3K]

Answer:

its 10...

Step-by-step explanation:

3 0

2 years ago

Identify the law illustrated by:20x +50 is the same as 50+20x​

Identify the law illustrated by:20x +50 is the same as 50+20x