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konstantin123 [22]
4 years ago
10

What is the sum of

2012x%20%2B%2012%20%5C%5C%20" id="TexFormula1" title=" 5 {x}^{2} + 3x - 7 \: and \: 12x + 12 \\ " alt=" 5 {x}^{2} + 3x - 7 \: and \: 12x + 12 \\ " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Alex4 years ago
7 0

Answer:

5x² + 15x + 5  

Step-by-step explanation:

Here's one way to do it.

Put corresponding powers of x beneath each other and add the similar terms.

5x² +   3x  -  7

<u>          12x + 12 </u>

5x² + 15x +  5

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Devon paid for 4 pounds of bananas with a $10 bill. He got back $4.00. What was the cost of 1 pound of bananas? $3.50 $24.00 $1.
Maksim231197 [3]

Answer:

24.00

Step-by-step explanation:

3 0
3 years ago
Solve the following logarithmic equations.<br> ln(x^6) = 36
Hoochie [10]

Answer:

The solution is x = e⁶

Step-by-step explanation:

Hi there!

First, let´s write the equation

ln(x⁶) = 36

Apply logarithm property: ln(xᵃ) = a ln(x)

6 ln(x) = 36

Divide both sides of the equation by 6

ln(x) = 6

Apply e to both sides

e^(ln(x)) = e⁶

x = e⁶

The solution is x = e⁶

Let´s prove why e^(ln(x)) = x

Let´s consider this function:

y = e^(ln(x))

Apply ln to both sides of the equation

ln(y) = ln(e^(ln(x)))

Apply logarithm property: ln(xᵃ) = a ln(x)

ln(y) = ln(x) · ln(e)         (ln(e) = 1)

ln(y) = ln(x)

Apply logarithm equality rule: if ln(a) = ln(b) then, a = b

y = x

Since y = e^(ln(x)), then x =e^(ln(x))

Have a nice day!

8 0
3 years ago
Factor 3x^2-3x??????????????
avanturin [10]

Answer:

6x

Step-by-step explanation:

3x*3x= 9x - 3x = 6x

6 0
3 years ago
Read 2 more answers
How to write out 14x(36-12 devised by 4
Vinvika [58]
My answer would be -84
6 0
3 years ago
If the diagonal of a square is 11.3 meters, approximately what is the perimeter of the square?
Stells [14]

Answer:

32

Step-by-step explanation:

The diagonal of a square has a length of x sqrt(2), where x is the side length. This means the perimeter of the square is 4 (11.3/sqrt(2)), which means the perimeter is approx. 4*8, which is 32

7 0
3 years ago
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