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nordsb [41]
3 years ago
7

What is the solution to –2|2.2x – 3.3| = –6.6? x = –3 x = 3 x = –3 or x = 0 x = 0 or x = 3

Mathematics
2 answers:
Nonamiya [84]3 years ago
6 0

x = 3

-2 | 2.2(3) -3.3 | = -6.6

-2 | 6.6 - 3.3 | = -6.6

-2 | 3.3 | = -6.6

-2 * 3.3 = -6.6

-6.6 = -6.6

Papessa [141]3 years ago
4 0

we have

-2\left|2.2x-3.3\right|=-6.6

Step 1

Find the first solution

<u>the first solution</u> is when the term contained in the absolute value is positive

-2[(2.2x-3.3)]=-6.6

solve for x

-4.4x+6.6=-6.6\\-4.4x=-6.6-6.6 \\ -4.4x=-13.2\\x=3

Step 2

Find the second solution

<u>the second solution</u> is when the term contained in the absolute value is negative

-2[-(2.2x-3.3)]=-6.6

solve for x

4.4x-6.6=-6.6\\ 4.4x=0\\x=0

therefore

<u>the answer is</u>

x = 0 or x = 3

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Step-by-step explanation:

Given that:

= (7x + 5) - (3x - 5)​

By simplifying

"-" sign before bracket will alter the inner signs

= 7x + 5 - 3x + 5

Adding like terms

= 4x + 10

By taking 2 common we get:

= 2(2x + 5)

i hope it will help you!

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2 years ago
12. Dominic drives a taxi. He charges a $2 flat fee plus $1.50 per mile.
r-ruslan [8.4K]

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The y-intercept represents the flat fee.

Step-by-step explanation:

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At x = 0, f(0) = 2.

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3 years ago
1 5/6 ÷ 3/5 x 2/11 = ?
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8 0
2 years ago
(x+3)^2 + 16/(x+3)^2 = 92 <br><br> x + 1/(x+3) = ??
Irina-Kira [14]
One
Remark

This is very complicate unless you pick the right method. It's very handy o know about substitutions.

Method
Let z = (k + 2)^2

Now the problem becomes
z + 16/z = 92           Multiply through by z 

Solution
z^2 + 16 = 92z
That does not look very promising. If you know the quadratic formula, this mess can be solved. If you do not know what the quadratic formula is, then what I've written is the answer. 

Worse yet, you have to know what complex numbers are. Is this something you know about? The z form of this equation is fine. It gives answers that are rational. The problem is that both are negative and so in your next step, you will be forced to take the square root of a negative number.

Maybe the answer is just
(x + 3)^ + 16 = 92(x + 3)^2
If all you have to do is expand this then you get
x^2 + 6x + 9  + 16 = 92(x^2 + 6x + 9) Remove the brackets.
x^2 + 6x + 25 = 92x^2 + 552x + 828  Put the left over to the right.
0 = 92x^2 - x^2 + 552x - 6x + 828 - 25
0 = 91x^1 + 546x + 803


It looks that way from the second question. If I'm wrong about that, put a comment down below.

Two
 Put over a common denominator and expand
\frac{(x + 3)^2 + 1}{(x + 3)^2}  =  \frac{x^2 + 6x + 9 + 1}{x^2 + 6x + 9} =  \frac{x^2 + 6x + 10}{x^2 + 6x + 9}
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2 years ago
If the dimensions of a triangle are cut in half, then the new perimeter is one fourth of the original perimeter. TrueFalse
kykrilka [37]
False the new perimeter is half of the original.
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