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3 years ago

I’m stuck and I would really like your help.

Mathematics

2 answers:

Alekssandra [29.7K]3 years ago

8 0

Answer:

x= 12

Step-by-step explanation:

2x-20=40-3x multiply both sides of the equation by 5

2x+3x= 40+20 move the terms

5x= 40+20 collect like terms

5x = 60 add the numbers

5x= 60 divide both sides by 5

x=12

Neporo4naja [7]3 years ago

6 0

Answer:

Answer: 1/12

Step-by-step explanation:

2/5x-4=8-3/5x.

We want to tank x out of the denominator by multiplying x on both sides.

2/5-4x=8x-3/5

Now we simplify

-12x=-1

x=1/12

Put x in the equation to check it

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3 years ago

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What is an equation of a line which passes through (6,9) and is perpendicular to the line whose equation is 4x − 6y = 15?

Svetllana [295]

Given:

The equation of the line passes through the point (6,9) and is perpendicular to the line whose equation is $4 x-6 y=15$

We need to determine the equation of the line.

Slope:

Let us convert the equation to slope - intercept form.

$-6 y=15-4x$

$y=\frac{2}{3}x-\frac{5}{2}$

From the above equation, the slope is $m_1=\frac{2}{3}$

Since, the lines are perpendicular, the slope of the line can be determined using the formula,

$m_1 \cdot m_2=-1$

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$m_2=-\frac{3}{2}$

Therefore, the slope of the equation is $m=-\frac{3}{2}$

Equation of the line:

The equation of the line can be determined using the formula,

$y-y_1=m(x-x_1)$

Substituting the point (6,9) and the slope $m=-\frac{3}{2}$ in the above formula, we get;

$y-9=-\frac{3}{2}(x-6)$

Simplifying the terms, we get;

$2(y-9)=-3(x-6)$

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$3x+2y=36$

Thus, the equation of the line is $3x+2y=36$

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3 years ago

How do you write 0.050 in scientific notation?

Ulleksa [173]

Answer:

5.0 x 10^-2

Step-by-step explanation:

you need to move the decimal place to the right in order to be 1 or over.

moving the decimal to the right will cause the exponent to be negative. opposite direction is positive.

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3 years ago

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Answer:

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Explanation:

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3 years ago

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Lunna [17]

Answer:

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Step-by-step explanation:

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