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2 years ago

15

Which expression is equivalent

1 answer:

VLD [36.1K]2 years ago

8 0

Answer:

B)

Step-by-step explanation:

You must divide these fractions with square roots:

$18x^{2}$ $\sqrt{14x^8}$ / 6 $\sqrt{7x^4}$ = $3x^{2}$ $\sqrt{2x^4}$ = $3x^{2}\sqrt{2}x^{2}$ = $3x^4\sqrt{2}$

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Please help! this is for a test! what do i write???

Nadya [2.5K]

Answer:

128/3 - peas 128/9 corn

Step-by-step explanation:

it is too long

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3 years ago

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What is the solution to 2x2+8x=x2-16?<br> O x=4<br> O x=-2<br> O x=2<br> O x=4

muminat

Answer:

I think its x=2 sorry if im wrong

Step-by-step explanation:

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3 years ago

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Simplify 0.75 (5v+11)-0.25 (11+v)

wariber [46]

<span>2 • (7v + 11) over 4 is your answer :)</span>

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3 years ago

What two rational expressions sum to 2x+3/x^2-5x+4

Anni [7]

Answer:

$\frac{2x + 3}{(x- 1)(x - 4)} = \frac{-5}{3(x- 1)} + \frac{11}{3(x - 4)}$

Step-by-step explanation:

Given the rational expression: $\frac{2x + 3}{x^2 - 5x + 4}$ , to express this in simplified form, we would need to apply the concept of partial fraction.

Step 1: factorise the denominator

$x^2 - 5x + 4$

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

$(x^2 - 4x) - (x + 4)$

$x(x - 4) - 1(x - 4)$

$(x- 1)(x - 4)$

Thus, we now have: $\frac{2x + 3}{(x- 1)(x - 4)}$

Step 2: Apply the concept of Partial Fraction

Let,

$\frac{2x + 3}{(x- 1)(x - 4)}$ = $\frac{A}{x- 1} + \frac{B}{x - 4}$

Multiply both sides by (x - 1)(x - 4)

$\frac{2x + 3}{(x- 1)(x - 4)} * (x - 1)(x - 4)$ = $(\frac{A}{x- 1} + \frac{B}{x - 4}) * (x - 1)(x - 4)$

$2x + 3 = A(x - 4) + B(x - 1)$

Step 3:

Substituting x = 4 in $2x + 3 = A(x - 4) + B(x - 1)$

$2(4) + 3 = A(4 - 4) + B(4 - 1)$

$8 + 3 = A(0) + B(3)$

$11 = 3B$

$\frac{11}{3} = B$

$B = \frac{11}{3}$

Substituting x = 1 in $2x + 3 = A(x - 4) + B(x - 1)$

$2(1) + 3 = A(1 - 4) + B(1 - 1)$

$2 + 3 = A(-3) + B(0)$

$5 = -3A$

$\frac{5}{-3} = \frac{-3A}{-3}$

$A = -\frac{5}{3}$

Step 4: Plug in the values of A and B into the original equation in step 2

$\frac{2x + 3}{(x- 1)(x - 4)} = \frac{A}{x- 1} + \frac{B}{x - 4}$

$\frac{2x + 3}{(x- 1)(x - 4)} = \frac{-5}{3(x- 1)} + \frac{11}{3(x - 4)}$

7 0

2 years ago

Help me plzzzzzzzzzzzzzzzzzz

omeli [17]

Can u Plz Mark as brainlest
<span>4x + 6 = 62 Subtract 6 from both sides 4x = 56 Divide 4 from both side x = 14 14 + 14 + 1 + 14 + 2 + 14 + 3 = 62 62 = 62 The youngest age is 14
</span>Its really easy as you can see hope this helps

5 0

3 years ago