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Alex777 [14]
3 years ago
13

What is this I am so dumb

Mathematics
2 answers:
erastovalidia [21]3 years ago
8 0

Answer:

-6\sqrt{13}

Step-by-step explanation:

This is similar to collecting like terms in Algebra, that is

- 2x - 7x + 3x = x(- 2 - 7 + 3) = - 6x

Similarly

-2\sqrt{13} - 7\sqrt{13} + 3\sqrt{13}

=\sqrt{13}(- 2 - 7 + 3) = - 6\sqrt{13}



ch4aika [34]3 years ago
8 0

Answer:

A. Is your answer


Step-by-step explanation:

Give the other guy Brainliest please

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Plz help 20 points if you get it right and I will give you brainliest
krek1111 [17]

Answer:

The first one cannot be simplified

reason: usually when simplifying an expression you combine like terms but in the given expression there are no like terms

An example of like terms would be 6a and 9a

Essentially what i am saying is that the variables have to be the same in order for them to be combined

The second one is 36r

This is the answer because they tried to combine like terms that aren't similar

r and f are not the same variable therefore they cannot be combined

Hope this helps :)

5 0
3 years ago
Read 2 more answers
Write the word expression in mathematical symbols. The value in cents of 4 quarters and x dimes is _____. 10 + 100x 100 + 25x 25
Harrizon [31]
The answer is 100+10x because the value of 4 quarters is 100 and the variable is attached to the dimes which equal 10 each.
5 0
3 years ago
Read 2 more answers
What is nine times the difference of a number and four written in number form?
xz_007 [3.2K]

Answer:

9(n-4)

Step-by-step explanation:

3 0
3 years ago
What is the value of 7 / 9 = (4x - 25) / 3x=
PolarNik [594]
\bf \cfrac{7}{9}=\cfrac{4x-25}{3x}\implies 7(3x)=9(4x-25)\implies 21x=36x-225
\\\\\\
225=15x\implies \cfrac{225}{15}=x\implies 15=x
7 0
4 years ago
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Please help me with my math test
ludmilkaskok [199]

Answer:

the anser is 5 grams

Step-by-step explanation:

no of nikel:9

total mass=45g

mass of 1 nickel =45/9=5 grams

brainliest plzzzz

7 0
3 years ago
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