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ValentinkaMS [17]
3 years ago
13

How do you solve this and what is the answer?

Mathematics
1 answer:
Sladkaya [172]3 years ago
7 0
We want to get rid of the square root sign somehow, so let's isolate that term.

2\sqrt{\frac{3x}{5}} + 3 = 11
2\sqrt{\frac{3x}{5}} = 11 - 3 = 8
\sqrt{\frac{3x}{5}} = 4

Now, in order to 'undo' a root sign, we need to do the opposite to it, by squaring the term, but in order for it to remain the same, we need to square 4 as well.

\frac{3x}{5} = 16

Now, we can isolate the variable:
3x = 5 \cdot 16 = 80
x = \frac{80}{3}, and since we can't simplify this further, our final answer becomes:

x = \frac{80}{3} or x = 26\frac{2}{3}
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Combine like terms to simplify the expression: 7x + 3y - 2 + 6x + 1 + y^2
a_sh-v [17]

The correct answer is B because after you simplifiy the expression, you would  get that answer:

7x + 3y - 2 + 6x + 1 + y^2

combine all the like terms to one side first

7x + 6x - 2 + 1 + y^2

then simplify

13x - 1 + y^2 or  y^2 + 3y + 13x - 1

8 0
3 years ago
(4x-4)+(3x-2)+(2x+6)=180
Ahat [919]

Answer:

x=20

Step-by-step explanation:

Let's solve your equation step-by-step.

4x−4+3x−2+2x+6=180

Step 1: Simplify both sides of the equation.

4x−4+3x−2+2x+6=180

4x+−4+3x+−2+2x+6=180

(4x+3x+2x)+(−4+−2+6)=180(Combine Like Terms)

9x=180

9x=180

Step 2: Divide both sides by 9.

9x

9

=

180

9

x=20

Answer:

x=20

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3 years ago
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Now for k = 3 we get:
P(X=3)=\frac{1.7^3e^{-1.7}}{3!}=0.15
The probability we are looking for is 0.15.
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