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ch4aika [34]
3 years ago
7

The sum of 3 times a number and 1 is 17 decreased by the number

Mathematics
1 answer:
DanielleElmas [232]3 years ago
7 0

Answer:

-9

Step-by-step explanation:

3x + 1 = x -17

3x-x=-17-1

x = -9

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timurjin [86]
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2.32 is already rounded to the nearest hundredth, therefore there is no need or way to round to the thousandths place
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8 0
3 years ago
Q 1.) Expand using identities:<br>i. (a+2b)²<br>ii. (5x-3y)²<br>iii. (3a+4)(3a-4)(9a²+16)<br>​
Ganezh [65]

Step-by-step explanation:

#1.

(a + 2b)²

<em>Using identity (x + y)² = x² + 2xy + y², we get:</em>

= (a)² + (2b)² + 2 × (a) × (2b)

= a² + 4b² + 4ab

= a² + 4ab + 4b² Ans.

#2.

(5x - 3y)²

<em>Using identity (a - b)² = a² - 2ab + b², we get:</em>

= (5x)² + (3y)² - 2 × (5x) × (3y)

= 25x² + 9y² - 30xy

= 25x² - 30xy + 9y² Ans.

#3.

(3a + 4)(3a - 4)(9a² + 16)

<em>Using identity (x + y)(x - y) = x² - y², we get:</em>

= [(3a)² - (4)²][9a² + 16]

= (9a² - 16)(9a² + 16)

= (9a²)² - (16)²

= 81a⁴ - 256 Ans.

4 0
2 years ago
Which of the following could be the lengths of the sides of a 45°-45°-90° triangle?
I am Lyosha [343]

Answer:

4/5/6= 6/4/5

Step-by-step explanation:

because that i have like with the mose cocative invous

5 0
3 years ago
Read 2 more answers
How do I solve this question?
asambeis [7]
This is a perfect square trnomial
(a+b)²=a²+2ab+b²
we see that a=5x and b=2

(5x)²+2(5x)(2)+2²=0
factor
(5x+2)²=0
set equal to zero
5x+2=0
5x=-2
x=-2/5
5 0
3 years ago
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