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3 years ago

Factor the polynomial 9x+45

Mathematics

1 answer:

Sav [38]3 years ago

8 0

The answere is=9(x+5)

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Find the point of intersection of each pair of lines using substitution

lyudmila [28]

Answer:

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Step-by-step explanation:

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3 years ago

Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7

Lapatulllka [165]

The first equation is $y-2x+1=0$

$y=2x-1$ (Equation 1)

The second equation is $4x^{2}+3y^{2}-2xy=7$ (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

$4x^{2}+3(2x-1)^{2}-2x(2x-1)=7$

$4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7$

by simplifying the given equation,

$12x^{2}-10x-4=0$

$6x^{2}-5x-2=0$

Using discriminant formula,

$D=b^{2}-4ac$

$D=25-4 \times 6 \times -2 = 73$

Now the formula for solution 'x' of quadratic equation is given by:

$x=\frac{-b+\sqrt{D}}{2a} and x=\frac{-b-\sqrt{D}}{2a}$

$x=\frac{5+\sqrt{73}}{12} and x=\frac{5-\sqrt{73}}{12}$

Hence, these are the required solutions.

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3 years ago

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ikadub [295]

Answer:

x=40

Step-by-step explanation:

5 0

4 years ago

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What is f(5) for the function f(x) = 6x + 1?

Likurg_2 [28]

Answer:

Step-by-step explanation:

plug in 5 for x

6(5)+1

30+1

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3 years ago

Please help!!! will pick brainliest

GaryK [48]

Answer:

432 cm^2

Step-by-step explanation:

Bottom rectangle:

24 * 9.5 = 228

Top rectangle:

Just move the tiny triangle over to the right side and you have a full rectangle.

24 * 8.5 = 204

Add the area of both rectangles to get the total area.

228 + 204 = 432

The area of the whole figure is 432 cm^2

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3 years ago

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