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Volgvan
3 years ago
13

Based on the equation below. What is the value of 3a + 1 -4a - 1 = -21

Mathematics
2 answers:
hammer [34]3 years ago
6 0

Answer:

a = -21

Step-by-step explanation:

rjkz [21]3 years ago
3 0

Answer:

2/3

Step-by-step explanation:

I think that is it

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I need helpppppppp!!!
yarga [219]

Answer: i would say probably 3 or -3

I hope it helps

3 0
3 years ago
A library has 12,500 fiction books and 19,000 nonfiction books.
valentina_108 [34]

Answer:

1,260 books (or C)

Step-by-step explanation:

1. 2/5 of fiction (12,500) are out, so 5,000 are out

2. 2/5 of non-fiction (19,000) are out, so 7,600 are out

3. Total books checked out are 12,600

4. 1/10 of checked out books are due this week, so 1,260 books (10%)

7 0
3 years ago
10 points! + Brainly
Cerrena [4.2K]

Answer:

3n² + 4n - n

3 x 7² + 4 x 7 - 7

first do the exponent because there is no parentheses

3 x 49 + 4 x 7 - 7

second do either multiplication or division with ever is closes to the left

147 + 4 x 7 - 7

147 + 28 - 7

third do either addition or subtraction which ever is closes to the left

175 -7

168

finally the answer is 168

5 0
3 years ago
Z^2-16z=-17 what is the solution?​
lys-0071 [83]

Answer:

There are 2 answers,

 z =(16-√188)/2=8-√ 47 = 1.144

 z =(16+√188)/2=8+√ 47 = 14.856

3 0
3 years ago
Read 2 more answers
What is 3(x + 7) expanded
Alex
Distributive proeprty
a(b+c)=ab+ac
3(x+7)=3x+21
6 0
3 years ago
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