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3 years ago

(3x + 4)3 How is this written in expanded form?

Mathematics

2 answers:

Sergeeva-Olga [200]3 years ago

7 0

Answer:

(3x + 4)3

By using distributary property,

(3x × 3) + (3 × 4)

9x+12

Ludmilka [50]3 years ago

4 0

9x+12

3(3x)+3(4) = 9x+12

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Find the value of x for which I is parallel to m. The diagram is not to scale.

Marta_Voda [28]

Answer:

Step-by-step explanation:

3x - 43 = 80 (alternate angles)

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4 years ago

Find the points of intersection of the equation: xy=2 and x+y =4

Blizzard [7]

Answer: $\Large\boxed{(2+\sqrt{2},~2-\sqrt{x} )~~and~~ (2-\sqrt{2},~2+\sqrt{x} )}$

Step-by-step explanation:

Given the system of equations

$1)~xy=2$

$2)~x+y=4$

Divide x on both sides of the 1) equation

$xy=2$

$xy\div x=2\div x$

$y=\dfrac{2}{x}$

Current system

$1)~y=\dfrac{2}{x}$

$2)~x+y=4$

Substitute the 1) equation into the 2) equation

$x+(\dfrac{2}{x} )=4$

Multiply x on both sides

$x\times x+\dfrac{2}{x}\times x=4\times x$

$x^2+2=4x$

Subtract 4x on both sides

$x^2+2-4x=4x-4x$

$x^2-4x+2=0$

Use the quadratic formula to solve for the x value

$x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4(1)(2)} }{2(1)}$

$x=2\pm\sqrt{2}$

Substitute the x value into one of the equations to find the y value

$xy=2$

$(2+\sqrt{2} )y=2$

$y=2-\sqrt{2}$

$OR$

$xy=2$

$(2-\sqrt{2} )y=2$

$y=2+\sqrt{2}$

Therefore, the points of intersection are

$\Large\boxed{(2+\sqrt{2},~2-\sqrt{x} )~~and~~ (2-\sqrt{2},~2+\sqrt{x} )}$

Hope this helps!! :)

Please let me know if you have any questions

5 0

1 year ago

Read 2 more answers

The answer is not c

LUCKY_DIMON [66]

Answer:

the answer is a. hope this working helps

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3 years ago

What are two pair fractions with common denominators for 3/5 and 3/4

diamong [38]

The cheap answer is, you simply "grab the denominator of one and multiply it times the other's top and bottom", so let's do so,

$\bf \cfrac{3}{5}\cdot \cfrac{4}{4}\implies \cfrac{12}{20}\qquad \qquad \qquad \qquad \qquad \cfrac{3}{4}\cdot \cfrac{5}{5}\implies \cfrac{15}{20}$

6 0

3 years ago

1×2×3×4×5×6×7×8×9×10=

FinnZ [79.3K]

Answer:

just use a calc

Step-by-step explanation:

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3 years ago