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3 years ago

13) maths equations answer??.. .

Mathematics

2 answers:

alina1380 [7]3 years ago

7 0

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$\frac{3x}{x - 2} = 7 \\$

Multiply sides by ( x - 2 )

$(x - 2) \times \frac{3x}{x - 2} = (x - 2) \times 7 \\$

Simplification

$3x = 7x - 14$

Subtract sides 7x

$- 7x + 3x = - 7x + 7x - 14$

Simplification

$- 4x = - 14$

Negatives simpliflies

$4x = 14$

Divide sides by 4

$\frac{4x}{4} = \frac{14}{4} \\$

$x = \frac{7}{2} \\$

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igomit [66]3 years ago

5 0

Answer:

x = $\frac{7}{2}$

Step-by-step explanation:

Given

$\frac{3x}{x-2}$ = 7 ( multiply both sides by x - 2 )

3x = 7(x - 2) ← distribute

3x = 7x - 14 ( subtract 3x from both sides )

0 = 4x - 14 ( add 14 to both sides )

14 = 4x ( divide both sides by 4 )

$\frac{14}{4}$ = x , that is

x = $\frac{7}{2}$

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Solve in attachment....

olga2289 [7]

Answer:

A)2

Step-by-step explanation:

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$\displaystyle \int_{0} ^{1} 5x \sqrt{x} dx$

use constant integration rule which yields:

$\displaystyle 5\int_{0} ^{1} x \sqrt{x} dx$

notice that we can rewrite √x using Law of exponent therefore we obtain:

$\displaystyle 5\int_{0} ^{1} x \cdot {x}^{1/2} dx$

once again use law of exponent which yields:

$\displaystyle 5\int_{0} ^{1} {x}^{ \frac{3}{2} } dx$

use exponent integration rule which yields;

$\displaystyle 5 \left( \frac{{x}^{ \frac{3}{2} + 1 } }{ \frac{3}{2} + 1} \right) \bigg| _{0} ^{1}$

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$\displaystyle 2 {x}^{2} \sqrt{x} \bigg| _{0} ^{1}$

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8 0

3 years ago

Read 2 more answers

Factor the expression. 6x + 54

vichka [17]

6(x+9) is the factored expression.

8 0

3 years ago

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Which of the following is the equation for the graph shown?a. x^2/144+y^2/95=1b. x^2/144-y^2/95=1c. x^2/95+y^2/144=1d. x^2/95-y^

Andrews [41]

e follSOLUTION

Given the question in the image, the following are the solution steps to answer the question

STEP 1: Write the general equation of an ellipse

$\frac{\mleft(x-h\mright)^2}{a^2}+\frac{(y-h)^2}{b^2^{}}=1$

STEP 2: Identify the parameters

the length of the major axis is 2a

the length of the minor axis is 2b

$\begin{gathered} 2a=24,a=\frac{24}{2}=12 \\ 2b=20,b=\frac{20}{2}=10 \end{gathered}$

STEP 3: Get the equation of the ellipse

$\begin{gathered} By\text{ substitution,} \\ \frac{(x-h)^2}{a^2}+\frac{(y-h)^2}{b^2}=1 \\ \frac{(x-0)^2}{12^2}+\frac{(y-0)^2}{10^2}=1=\frac{x^2}{144}+\frac{y^2}{100}=1 \end{gathered}$

STEP 4: Pick the nearest equation from the options,

Hence, the equation of the ellipse in the image is given as:

$\frac{x^2}{144}+\frac{y^2}{95}=1$

OPTION A

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1 year ago

An urn contains six red balls and four green balls. A sample of seven balls is selected at random.

KIM [24]

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Question Three: At least four is likely, as there is more red then green in the Urn.

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3 years ago

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salantis [7]

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Step-by-step explanation:

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3 years ago