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Karolina [17]
3 years ago
9

2x +1 =23 what is the answer

Mathematics
1 answer:
grin007 [14]3 years ago
5 0

Hey there!

“2x + 1 = 23”

SUBTRACT by 1 to BOTH SIDES

2x + 1 – 1 = 23 – 1

CANCEL out: 1 – 1 because it gives you the value of 0

KEEP: 23 – 2 because it helps us solve for x

“23 – 1 = 22”

NEW EQUATION: 2x = 22

DIVIDE by 2 to BOTH SIDES

2x/2 = 22/2

CANCEL out: 2/2 because that gives you 1

KEEP: 22/2 because it helps us solve for x

Answer: x = 11 ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

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9 cos(sin¯¹(x)) = √81 – 81x²
Ira Lisetskai [31]

The equation 9cos(sin¯¹(x)) = √(81 – 81x²) is true since L.H.S = R.H.S

To answer the question, we need to know what an equation is

<h3>What is an equation?</h3>

An equation is a mathematical expression that show the relationship between two variables.

Given 9cos(sin¯¹(x)) = √(81 – 81x²), we need to show L.H.S = R.H.S

So, L.H.S = 9cos(sin¯¹(x))

= 9[√{1 - sin²(sin¯¹(x)}] (Since sin²y + cos²y = 1 ⇒ cosy = √[1 - sin²y])

9[√{1 - sin²(sin¯¹(x)}] = √9² × √{1 - sin²(sin¯¹(x)}]

= √[9² × {1 - sin²(sin¯¹(x)}]

= √[81 × {1 - sin²(sin¯¹(x)}]

= √[81 × {1 - x²}]   (since sin²(sin¯¹(x) = [sin(sin¯¹(x)]² = x²)

= √(81 – 81x²)

= R.H.S

So, the equation 9cos(sin¯¹(x)) = √(81 – 81x²) is true since L.H.S = R.H.S

Learn more about equations here:

brainly.com/question/2888445

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6 0
2 years ago
How can i find The function of f(x) = 150 (1.3)^t
natka813 [3]

Answer:

See below.

Step-by-step explanation:

In comments, you said you wanted it graphed.

If it says f(x) on the left side, the equation should have an 'x' on the right side, so something is fishy here.

But, in an effort to try and help you ....

With the data you have given, I would graph it just like y = 150 (1.3)^x

You can pick various values for x, like -3,-2,-1,0,1,2,3 and see what y is for each one, then plot the points on graph paper.

If x = 0, y= 150(1.3)^0 = 150(1) = 150  because anything to power zero is 1

If x = -1, y= 150(1.3)^(-1) = 150(1/1.3) ≈ 132.7

If x = +1, y= 150(1.3)^(1) = 150(1.3) = 195

And so on.

I did the graph on DESMOS and it has a very large scale.

4 0
3 years ago
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IceJOKER [234]

Answer:

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Step-by-step explanation:

6 0
4 years ago
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Step-by-step explanation:

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