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2 years ago

Y= 2x-4 6r - 3y = 12

1 answer:

3 0

You plug the (2x-4) in for y to look like 6r-3(2x-4)=12. then when you solve and subtract the 12 from the other 12 you’re left with 6r-6x=0. divide the 6 out and the answer is r=x all real numbers.

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Help me please fast

Natalija [7]

Answer:

Step-by-step explanation:

$\frac{5}{x-3}+\frac{2}{x+1}=3 \\\\\frac{5(x+1)+2(x-3)}{(x-3)(x+1)} =3\\\\5x+5+2x-6=3(x-3)(x+1)\\\\7x-1=3(x^2+x-3x-3)\\\\7x-1=3(x^2-2x-3)\\\\7x-1=3x^2-6x-9\\\\0=3x^2-6x-7x-9+1\\0=3x^2-13x-8$

Hence proved!

3 0

2 years ago

Which of the function below could possibly have created this graph ?

lina2011 [118]

ANSWER

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

EXPLANATION

The given graph rises on the left and falls on the right.

This implies that the degree of the function is even.

Since the graph opens downward, the coefficient of the leading term must be negative.

The graph graph of the function also has 3 intercepts with one of them having an even multiplicity.

This means that the degree must be 4.

Therefore the last choice is correct.

4 0

2 years ago

Read 2 more answers

If a cylinder has a volume of 1582.56 and a cube has the same volume how do you find the side lenght of the cube?

kipiarov [429]

Answer: 11.65 Answer: The area of a cube = side x side x side or side^3. So all you need to do is take the cubed root of 1582.56 which is approximately 11.65

7 0

3 years ago

3r+(7+8)/(t-3)when r=4, s=3 and t=5

mars1129 [50]

Answer:

19.5

Step-by-step explanation:

3r+(7+8)/(t-3)

3(4)+(15)/(5-3)

12+(15/2)

12+7.5

19.5

6 0

2 years ago

Line t has an equation of y=10x-8. Line u is perpendicular to line t and passes through (-10,-6). What is the equation of line u

Pachacha [2.7K]

Answer: y= $-\frac{1}{10} x-7$

Step-by-step explanation: The slope of a perpendicular line is always negative and the reciprocal (opposite fraction) of the regular slope so the slope would be $-\frac{1}{10}$ . If the line passes through (-10,-6) then the y intercept would be (0,-7) because every time x goes 10 right y goes down 1 because of the slope.

4 0

1 year ago