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3 years ago

Find value of variable

1 answer:

4 0

Step 1: Identify the variables.
Step 2: Add/Subtract whole numbers so they're all on one side.
Step 3: Add/Subtract Variables so they're all on one side.
Step 4: Multiply /Divide to get the variable by itself.
Step 5: Check your work.

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PLEASE HELP WILL MARK BRAINLIEST -SEE ATTACHMENT-

yuradex [85]

ANSWER

$(x - 5) ^{5} = {x}^{5} - 25 {x}^{4} + 250 {x}^{3} - 1250 {x}^{2} + 3125x- 3125$

EXPLANATION

From the Pascal's triangle,

The coefficients are :

1, 5, 10,10, 5,1

Because of the negative sign, the expansion will alternate sign.

$(x - y) ^{5} = {x}^{5} - 5 {x}^{4} y + 10 {x}^{3} {y}^{2} - 10 {x}^{2} {y}^{3} + 5x {y}^{4} - {y}^{5}$

We now put y=5 into the expansion to get,

$(x - 5) ^{5} = {x}^{5} - 5 {x}^{4} (5) + 10 {x}^{3} ( {5}^{2}) - 10 {x}^{2} ({5})^{3} + 5x( {5})^{4} - {5}^{5}$

$(x - 5) ^{5} = {x}^{5} - 25 {x}^{4} + 250 {x}^{3} - 1250 {x}^{2} + 3125x- 3125$

3 0

3 years ago

Read 2 more answers

Solve x2 - 8x = 3 by completing the square. Which is the solution set

Simora [160]

Answer:

4\pm\sqrt{19}

Step-by-step explanation:

Move everything to left side

$x^{2} -8x -3 =0$

Now to solve this square equation we need to find Descriminant

$D=b^{2} -4ac=64+12=76$

As Descriminant D is greater than 0 then we have 2 solutions which we can calculate by this formula

$x_{1,2}=\frac{-b\pm\sqrt{D}}{2a} =\frac{8\pm2\sqrt{19}}{2}=4\pm\sqrt{19}$

3 0

2 years ago

Karen paid $43.70 for a book. The price of the book was $40. What was the sales tax rate?

Korolek [52]

9.25%

3.70/40= 0.0925

0.0925x100= 9.25%

7 0

3 years ago

Read 2 more answers

Simplify (3^3*5^3)^-2

Juliette [100K]

(3³ x 5³)² - 2

( 27 x 125)² - 2

125 x 27 = 3375

3375² = 11,390,625

11,390,625 - 2 = 11,390,623

4 0

2 years ago

Translate the word phrase into an algebraic equation and solve: the total of m and twenty-four is −88.

egoroff_w [7]

M+ 24= -88 is the translated word phrase

8 0

3 years ago

Read 2 more answers