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My name is Ann [436]
4 years ago
6

Simplify (-7a-19c)-(-12a+30c)-(-21a-11c)

Mathematics
2 answers:
Jobisdone [24]4 years ago
7 0

Answer:

26a-38c

Step-by-step explanation:

Distribute the Negative Sign:

=−7a−19c−(−12a+30c)+−1(−21a−11c)

=−7a+−19c+12a+−30c+−1(−21a)+−1(−11c)

=−7a+−19c+12a+−30c+21a+11c

Combine Like Terms:

=−7a+−19c+12a+−30c+21a+11c

=(−7a+12a+21a)+(−19c+−30c+11c)

=26a+−38c

vfiekz [6]4 years ago
5 0
Drop parentheses -7a-19c+12a+30c+21a-11a
Combine like terms -18a-19c+33a+30c
Combine like terms (again) 15a+11c
Simplified, this expression is 15a+11c
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The average age of 3girls is 17years 4months.The average 2 of them is 17years 3months. How old is the third girl?​
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Answer:

17 years 2months

Step-by-step explanation:

Beacause the last girl is young

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A culinary club earns $1190 from a dinner service. They sold 34 adult meals and 51 student meals. an adult meal costs twice as m
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3 years ago
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Sum of one-half of a number and 4 is -16. find the number
Lady_Fox [76]
X is the number
sum means add

sum of half a number and 4 means
(x/2)+4
result is -16

(x/2)+4=-16
minus 4 both sides
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times 2 both sides
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the number is -40
5 0
4 years ago
If ab = 10 and a2 + b2 = 30, what is the value of<br> (a + b)^2?
Bogdan [553]
Ab=10
a^2+b^2=30
((a+b)^2=a^2+2ab+b^2=a^2+b^2+2*10=30+20=50

6 0
3 years ago
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The description in lines 20-21 ("temples . . . centers")
Lynna [10]

The correct option is (C) deprecating the appearance and character of many new theaters.

<h3>What is a description?</h3>
  • The pattern of narrative development that aims to bring a place, object, character, or group to life is known as description.
  • Description, along with exposition, argumentation, and narration, is one of four rhetorical modes (also known as modes of discourse).
  • In practice, writing literature that relied solely on one of the four basic modes would be difficult.

To find the correct option:

  • The correct answer is (C).
  • Over the last decade, city after city has rushed headlong into the promotion of vast amounts of cultural real estate.
  • It has seen a few goods and a lot of bad news theaters, temples to bourgeois muses with all the panache of suburban shopping malls.

Therefore, the correct option is (C) deprecating the appearance and character of many new theaters.

Know more about the description here:

brainly.com/question/25605883

#SPJ4

7 0
2 years ago
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