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romanna [79]
3 years ago
15

Explain how you know that the sum of 12.6 3.1 and 5.4 is bigger than 20

Mathematics
1 answer:
devlian [24]3 years ago
7 0
You know because if you round to the nearest whole number for these numbers, you will have 13 + 3 + 5, which you know is greater than 20.
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Factor completely:
maw [93]

Answer:

d

Step-by-step explanation:

Given

12x^{5} + 6x³ + 8x² ← factor out 2x² from each term

= 2x²(6x³ + 3x + 4) → d

7 0
3 years ago
In centimeters, what is the unknown length in this right triangle
Ilya [14]

Answer:

11

Explanation:

(next time, it would be helpful to include a picture)

If you were on the same test as I was, than that means that the triangle you're looking for is the one below.

Using the Pythagorean Theorem,

a² + b² = c² is the same as c² - b² = a²

c = 61

61^2 =  61 X 61 = 3,721  

b = 60

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Next, we subtract:

3,721 - 3,600 = 121  

√121 = 11

(x = 11 cm)

so 11 is your answer

3 0
3 years ago
Read 2 more answers
Would you rather use a ruler or colored tiles
Nonamiya [84]
I would rather use a ruler but it depends on what you are doing.
6 0
3 years ago
(8x- 1) (11X - 25) (15y - 48) ​
alexgriva [62]

1320xyX−4224xX−165yX−3000xy+528X+9600x+375y−12001320xyX-4224xX-165yX-3000xy+528X+9600x+375y-1200

5 0
3 years ago
21) Find x. Show your work.
shepuryov [24]

Answer:

x = 21

Step-by-step explanation:

Givens:

Every triangle's interior angles add up to 180°

The triangle has a right angle.

The triangle is isosceles (two equal sides and two equal angles)

Let's make an equation with the information we have already.

2 × (2x + 3) + 90 = 180

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x                           = 21

4 0
3 years ago
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