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2 years ago

Please help brainlist

Mathematics

1 answer:

olga_2 [115]2 years ago

6 0

Answer:

Step-by-step explanation:

The answer is B because if a line goes through (0,0) then it is automatically proportional.

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An automobile dealer had 360 cars and trucks in stock during the month. He must pay an inventory fee of $2 per car and $5 per tr

blagie [28]

No of cars=x,trucks=yx+y=3602x+5y=1227solving simultaenouslyx=no of cars=191no of trucks=y=169

3 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20x%20-%202%5Csqrt%7Bx%20-%203%20%3D%200%7D%20" id="TexFormula1" title=" x - 2\sqrt{x - 3 = 0

GrogVix [38]

Answer:

No Real Solutions

Step-by-step explanation:

So we have:

$x-2\sqrt{x-3}=0$

First, determine the domain restrictions. The expression under the radical cannot be less than 0. Therefore:

$x-3\geq 0\\x\geq 3$

Therefore, our final answers must be greater than or equal to 3:

Now, going back to the original equation, subtract x from both sides:

$-2\sqrt{x-3}=-x$

Now, square both sides:

$4(x-3)=x^2$

Distribute:

$4x-12=x^2$

Subtract 4x and add 12 to both sides:

$0=x^2-4x+12$

This isn't factor-able. Let's use the quadratic formula. a is 1, b is -4 and c is 12:

$x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Substitute:

$x=\frac{4\pm\sqrt{(-4)^2-4(1)(12)}}{2(1)}$

Simplify the radical:

$x=\frac{4\pm\sqrt{-32}}{2(1)}$

The number under the radical is negative. In other words, there are no real solutions.

7 0

3 years ago

Which expression is equivalent to 8 square root 6 ?

LiRa [457]

Answer:

(2.13982638787^3) x 2

4 0

3 years ago

A 12 inch line segment is divided into two parts. Which of the following lengths result in a ratio closest to the golden ratio,

Marta_Voda [28]

Answer:

2:4

Step-by-step explanation:

I remember doing this is my class

8 0

1 year ago

Factorise completely 2y^2-4y

Serga [27]

To factor an expression, first you have to find the GCF or Greatest Common Factor of all of the pieces of the expression.

The GCF of 2y^2 and -4y is 2y

So, to factor this expression, we need to divide all of the pieces of the expression by the GCF.

2y(y-2)

2y^2 - 4y in completely factored form is 2y(y-2)

8 0

3 years ago

Read 2 more answers