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2 years ago

Does anyone know this ?

Mathematics

1 answer:

docker41 [41]2 years ago

8 0

Answer:

an = 24(2/3) - n

Step-by-step explanation:

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What is the value of the rational expression below when x is equal to 4? x+20/x+4

Aleonysh [2.5K]

Answer:

Step-by-step explanation:

All we need to do here is plug in the number 4 for the variable x. Wherever there's an x, kidnap it and replace it with a 4!

$\frac{x + 20}{x + 4}$

x = 4

$\frac{4 + 20}{4 + 4}$

Do the addition.

4 + 20 = 24

4 + 4 = 8

$\frac{24}{8}$

We can simplify this! What is 24 divided by 8?

24/8 = 3

The answer is 3!

7 0

3 years ago

Which expression is equivalent to 9x^2-2y+3x^2-3y

Thepotemich [5.8K]

Answer:The answer is choice B

Step-by-step explanation: (3x-2y)2-(2x-3y)2

Final result :

5 • (x + y) • (x - y)

Step by step solution :

Step 1 :

1.1 Evaluate : (3x-2y)2 = 9x2-12xy+4y2

1.2 Evaluate : (2x-3y)2 = 4x2-12xy+9y2

Step 2 :

Pulling out like terms :

2.1 Pull out like factors :

5x2 - 5y2 = 5 • (x2 - y2)

Trying to factor as a Difference of Squares :

2.2 Factoring: x2 - y2

Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)

Proof : (A+B) • (A-B) =

A2 - AB + BA - B2 =

A2 - AB + AB - B2 =

A2 - B2

Note : AB = BA is the commutative property of multiplication.

Note : - AB + AB equals zero and is therefore eliminated from the expression.

Check : x2 is the square of x1

Check : y2 is the square of y1

Factorization is : (x + y) • (x - y)

Final result :

5 • (x + y) • (x - y)

4 0

3 years ago

George wants to invest $20,000 One investment pays interest at a rate of 18 2/3% while another pays interest at a rate of 0.1872

xz_007 [3.2K]

Answer:

Investment with interest rate 0.1872 is better

Step-by-step explanation:

Given as :

George investment principal = $20,000

The Rate of interest (R1) = 18 $\frac{2}{3}$ % = $\frac{56}{3}$ %

I.e R1 = 18.67 %

Again The The Rate of interest (R2) = 0.1872 = 18.72 %

Let the time period for both rate of interest = 1 years

Now from compound interest method

Amount = Principal × $(1 + \frac{Rate}{100})^{Time}$

Or, A 1 = $ 20 , 000 × $(1 + \frac{18.67}{100})^{1}$

Or, A 1 = $ 20 ,000 × 1.1867

∴ A 1 = $ 23,734

And A 2 = $ 20 , 000 × $(1 + \frac{18.72}{100})^{1}$

Or, A 2 = $ 20 ,000 × 1.1872

∴ A 2 = $ 23,744

Hence From the calculation of both amount it is clear that , investment with interest rate 0.1872 is better . Answer

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3 years ago

Round 11,000 to the nearest 10,000

s2008m [1.1K]

10,000 is the answer

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3 years ago

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Manny ordered 16 skateboard wheels. If he sold 4 wheels to Brad, how many skate boards can he put wheels on if each board 4 whee

alexgriva [62]

It would be 3 cuz 16-4 =12 divide by 4 is 3

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3 years ago

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