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2 years ago

9

my last question was deleted for asking whats 2+2 & may i just say , i have learned from my consequence , that when im bored

to never destract others from being serious SIIIIIKKEEEEEEEEEEEEEEEEEEEE LICKMA

2 answers:

castortr0y [4]2 years ago

7 0

Answer:

4

Step-by-step explanation:

adoni [48]2 years ago

5 0

Answer: The answer 2+2 is 4. HAHA funny question tho

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I need some help with this rational equation. It's supposed to = -1, but for some strange reason I keep getting x^2 +2x = -1.

Rasek [7]

This one is so easy that your brain refuses to accept it.
It's looking for a harder answer, but can't find it !

You're totally correct, as far you went.    x² + 2x does = -1

Now add ' 1 ' to each side:   x² + 2x + 1 = 0

Can you factor that quadratic ?
Can you mash it through the quadratic formula ?

Actually, it's the simplest possible perfect square.

   x² + 2x + 1 = (x + 1)²

So the solutions of   x² + 2x + 1 = 0 are both   x = -1 .

Don't say anything.
I know it's embarrassing.

7 0

2 years ago

What is the solution(s) to the equation 5a2 - 44 = 81?

taurus [48]

Answer:

B

Step-by-step explanation:

5a^2 - 44 = 81 Add 44 to both sides

5a^2 = 81 + 44 Collect like terms

5a^2 = 125 Divide both sides by 5

a^2 = 125/5

a^2 = 25 Take the square root of both sides

√a^2 = √25

a = +5

a = -5

The answer is B

7 0

2 years ago

Choose the best description for the real number square root of 35.

Liono4ka [1.6K]

$\sqrt{35}$

This cannot be simplified any further.

Have a good one!

3 0

2 years ago

How do you solve it?

MatroZZZ [7]

Answer:

<em>i: </em>x=-2, x=1

<em>ii: </em>x=-1/2

Step-by-step explanation:

Quadratic form:

You solve <em>i </em>by using FOIL (First, Outside, Inside, Last) because it is a multiplication problem.

$(x+2)(x-1)=0$

<em>"first"</em> would be $x*x$ , which would equal $x^{2}$

<em>"outside"</em> would be $x*-1$ , which would equal $-1x, or -x$

<em>"inside"</em> would be $2*x$ , which would equal $2x$

<em>"last" </em>would be $2*-1$ , which would equal $-2$

Now you need to combine the terms so that they are one after the other

$x^{2}-x$ $+2x-2$

Combine like terms, and you should get:

$x^{2} +x-2$

i Solution

<em>You need to get the variable by itself.</em>

<em>Subtract two from both sides</em>

$x+2=0\\x=-2$

<em>Add one to both sides.</em>

$x-1=0\\x=1$

ii Solution

<em>Add all the terms.</em>

$x+2+x-1=0\\2x+1=0\\2x=-1\\x=-\frac{1}{2}$

8 0

3 years ago

Find the area of the following triangle. Show each of the math steps that you use to find the area. Then explain how to go about

Aleksandr [31]

Right angled triangle

Base=B=2.4cm
Height=H=1.8cm

Area:-

$\\ \rm\rightarrowtail \dfrac{1}{2}BH$

$\\ \rm\rightarrowtail \dfrac{1}{2}(2.4)(1.8)$

$\\ \rm\rightarrowtail 1.2(1.8)$

$\\ \rm\rightarrowtail 2.16cm^2$

4 0

1 year ago