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2 years ago

10

Ruben bought 6 new books for his collection by 12% How many books did he have before the purchase

2 answers:

lilavasa [31]2 years ago

8 0

He had 50 books before

Nonamiya [84]2 years ago

3 0

50
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9/10-1/3-1/5 find the fraction

Zanzabum

Find a common multiple in between the denominators.
10 and 3 and 5 -> the least common multiple is 30.

Change all the denominators to 30 by multiplying the top and bottom by the same number.

9/10=27/30
1/3=10/30
1/5=6/30

Subtract!
27/39-10/30-6/30=11/30

The answer is 11/30

Hope this helps!

3 0

3 years ago

(5x-12)+(3x+30)+(48)

skelet666 [1.2K]

Answer:

8x+66

Step-by-step explanation:

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2 years ago

2. What is the value of x if the angles<br> within a triangle are 2x +1, 7x-2 and 3x<br> +5?

noname [10]

Answer:

$x=14.67\\$ °

Step-by-step explanation:

The sum of all the three angles of any triangle is 180°

Putting sum of all the angles given equals to 180°

$(2x+1)+(7x-2)+(3x+5)=$ $180$ °

$2x+7x+3x+1-2+5=180$ °

$12x+4=180$ °

$x=\frac{180-4}{12}$

$x=14.67\\$ °

The value of the x is found on solving the given angles of the triangles.

8 0

2 years ago

Are the lines below parallel, perpendicular, or neither?

levacccp [35]

Answer:

<h2>Neither </h2><h2></h2>

2y = 3x - 4

y = 2/3x - 3

Step-by-step explanation:

Parallel means the lines never cross. These two lines cross. Perpendicular means they cross and form a 90° angle.

5 0

3 years ago

Read 2 more answers

How do u solve 4n-6=10n

Tcecarenko [31]

Answer:

n = -1

Step-by-step explanation:

4n - 6 = 10n

Combine like terms: (you can see that both 4n and 10n both have a n. This means that they are like terms. You would just add/subtract them as usual)

4n - 10n = 6

-6n = 6

n = -1

5 0

2 years ago

Read 2 more answers