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2 years ago

I'm a little confused, it's about Combining like terms but I did don't understand

Mathematics

2 answers:

ella [17]2 years ago

6 0

2(-n-3)-7(5+2n)

First, you need to distribute the numbers in front of the parentheses to those in the parentheses. This means you multiply.

2 times -n= -2n

2 times -3= -6

-7 times 5= -35

-7 times 2n= -14n

This leaves you with

-2n -6 -35 -14n

Next, combine like terms.

(-2n) + (-14n)= -16n
(-35) + (-6)= -41

This gives you

-16n-41, which is B in your answer choices.

Hope this makes sense!! :)

Alex17521 [72]2 years ago

4 0

Answer:

what she said...

Step-by-step explanation:

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JKL is a straight line.

kirza4 [7]

Answer:

x = 32°

Step-by-step explanation:

∆KLM is an isosceles triangle because it has two equal sides, KL & KM. Therefore, the angles opposite to each of the two equal sides, which are referred to as the base angles are congruent to each other.

m<KML = m<KLM = 58°

m<MKL = 180 - (58 + 58) (Sum of triangle)

m<MKL = 64°

m<JKM = 180 - m<MKL (linear pair theorem)

m<JKM = 180 - 64 (Substitution)

m<JKM = 116°

∆JKM is also an isosceles triangle with two equal sides. Therefore, it's based angles (x & <J) would also be equal to each other.

Thus:

x = ½(180 - m<JKM)

x = ½(180 - 116) (Substitution)

x = 32°

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2 years ago

Angles 1 and 2 are complementary. If angle 1 = 35, then what is the measure of angle 2?

enot [183]

Answer:

doge

Step-by-step explanation:

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2 years ago

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rewona [7]

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3 years ago

Work out 7/10 + 8/15 is. Give your answer as a mixed number in its simplest form.

san4es73 [151]

Answer:

$1\frac{7}{30}$

Step-by-step explanation:

$\frac{7}{10}+\frac{8}{15}\\ \\ \frac{21}{30}+\frac{16}{30}\\\\\frac{37}{30}\\\\1\frac{7}{30}$

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2 years ago

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PLEASE HELP. I need an answer by Nov 5

DochEvi [55]

Answer:

Step-by-step explanation:

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3 years ago

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I'm a little confused, it's about Combining like terms but I did don't understand​

I'm a little confused, it's about Combining like terms but I did don't understand