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Nonamiya [84]
3 years ago
10

Help please! i need get answers to 3 and 4 :)

Mathematics
1 answer:
amm18123 years ago
7 0

Answer:

2/9 and 10% those are the answers

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3x~6y=~3<br> 2x+4y=30<br> Elimination using multiplication
Nat2105 [25]
\left \{ {{3x-6y=-3\ \ |*2} \atop {2x+4y=30\ \ | *(-3)}} \right. \\\\ \left \{ {{6x-12y=-6} \atop {-6x-12y=-90}} \right. \\+----\\elimination\\\\&#10;0 \neq -69\\\\There\ are\ no\ solutions
7 0
3 years ago
In 2002, the Bookstore sold 1000 paperback books and 1500 hardback books. In 2003, the store sold 15% more paperback books and 5
ratelena [41]
Given:
2002 sold 1000 paperback books and 1500 hardback books for a total of 2,500 books.

2003 sold 15% more paperback books and 5% more hardback books.
1000 x 1.15 = 1,150 paperbacks
1500 x 1.05 = 1,575 hardbacks

1150 + 1575 = 2,725

2,725 - 2,500 = 225
225 / 2,500 = 0.09
0.09 x 100% = 9%  choice C

7 0
3 years ago
Liliana asked her friend how many siblings they each have. Using the data plot, how many of the students have three or more sibl
Alchen [17]

Answer:

11 students

Step-by-step explanation:

We can see that there are 6 students with 3 siblings, 4 students with 4 siblings, and 1 student with 6 siblings.

Adding all of these together will tell us how many students have 3 or more siblings.

6 + 4 + 1 = 11

So, there are 11 students with 3 or more siblings.

3 0
3 years ago
Read 2 more answers
Please help! Please let me know if you need a better picture.
Dmitriy789 [7]

Answer:

-2

Step-by-step explanation:

First you should write out the entire word equation into one you may recongnize:

7x - 12 = -3x - 32

After this, solve for x:

7x + 3x = 12 - 32

<u>10x</u> = <u>-20</u>

10      10

x = -2

the number is -2

5 0
3 years ago
Find the sum of r + s, when r= -14.1 and s = 18.3
Vladimir79 [104]
The answer is 4.2 because you have to replace r with -14.1 and s with 18.3. After that you subtract them and you get 4.2
3 0
3 years ago
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