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Lubov Fominskaja [6]
3 years ago
7

The solution of 3|x - 5| + 2 = 20 I need two answers Ex: # or #

Mathematics
1 answer:
LuckyWell [14K]3 years ago
7 0

Answer:

<h2>x = -1 or x = 11</h2>

Step-by-step explanation:

|a|=\left\{\begin{array}{ccc}a&for&a\geq0\\-a&for&a

3|x-5|+2=20\qquad\text{subtract 2 from both sides}\\\\3|x-5|=18\qquad\text{divide both sides by 3}\\\\|x-5|=6\iff x-5=6\ \vee\ x-5=-6\qquad\text{add 5 to both sides}\\\\x=11\ \vee\ x=-1

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8.618 divided by 0.695
kramer

Answer:

<em>8.618 divided by 0.695</em><em>=</em><em> </em><em>12.4</em>

<em>hope this helps</em><em> </em><em><</em><em>3</em>

7 0
3 years ago
Find x for each of these triangles please
notka56 [123]

Answer:

8) 10°

9) X can not be determined.

10) 10°

11) 12 units.

Step-by-step explanation:

8) The three sides of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each angle will be 60°.

So, 6x = 60°  

⇒ x = 10°.

9) The three angles of the given triangle are equal. Hence, the triangle is an equilateral triangle, hence each side will be equal.

So, 6x - 5 = 6x

So, x can not be determined from this equation.

10) Δ KLM is equilateral, so, KN will bisect ∠ MKL. So, ∠ NKL = 30°

Hence, 3x = 30°

⇒ x = 10°

11) In Δ XYZ, XZ = XY , so, ∠ Z = ∠ Y.

Again, ∠ X is given to be 60°.

Therefore, each angle is 60°.

So, the triangle XYZ is equilateral, and each side will be equal.

So, 3x + 8 = 4x - 4

⇒ x = 12 units. (Answer)

3 0
3 years ago
Solve by addition method <br>3x+y=8 <br>2x-y=7
Vinil7 [7]

Answer:

(3,-1)

Step-by-step explanation:

So we have the system of equations:

3x+y=8\\2x-y=7

As directed, add straight down. The y-variable will cancel:

5x=15

Now, divide both sides by 5. The left cancels:

x=3

So x is 3.

Now, substitute 3 for x in either of the equations:

3x+y=8

Substitute 3 for x:

3(3)+y=8

Multiply:

9+y=8

Subtract 9 from both sides:

y=-1

So, our answer is: x=3, y=-1 or (3,-1).

And we are done :)

7 0
3 years ago
What is the whole number 11 minus the number 3 4/12 show your work
olga2289 [7]

1.) 11 - 3 4/12

2.) 11 - 3 1/3    

3.) 11/1  - 3 1/3

4.) 33/3 -  10/3  

5.) 23/3 or 7.7 or 7 2/3 is your answer, depending on how you want it

7 0
3 years ago
Read 2 more answers
What is the best description of the relation?
Pie

Answer:

The relation is <u>not</u> a function.

Step-by-step explanation:

A function is a relation in which no two ordered pairs have the same input  and different outputs. Whenever you're trying to determine whether a given relation is a function, observe whether each input corresponds with <u><em>exactly</em></u> one output.

In this case, the answer is no.  The input value of 10 corresponds with two output values, 4 and 20.  It only takes one input value to associate with more than one output value to be <u>invalid</u> as a function.

Therefore, the given relation is <em><u>not</u></em> a function.

8 0
3 years ago
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