All categories

3 years ago

PLZ ANSWER IF U KNOW THE ANSWER

Mathematics

2 answers:

creativ13 [48]3 years ago

3 0

Answer: its b

Step-by-step explanation:

stiv31 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

1. What property allows the expression

Afina-wow [57]

I have no idea, someone help

4 0

3 years ago

What are the exact solutions of x2 − 5x − 1 = 0 using x equals negative b plus or minus the square root of the quantity b square

geniusboy [140]

Answer:

$x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}$

Step-by-step explanation:

So the question here is asking you to use the quadratic formula which is expressed as: $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\$

A quadratic can generally be expressed as: $y=ax^2+bx+c$

So using the equation you gave: $0=x^2-5x-1$

We can identify the following values: a=1, b=-5, c=-1

Btw the equation explicitly write "1" as the coefficient of x, but since it's not provided it's implied that it's 1.

So plugging in the known values, we get the following equation:

$x=\frac{5\pm\sqrt{(-5)^2-4(1)(-1)}}{2(1)}\\\\x=\frac{5\pm\sqrt{25+4}}{2}\\\\x=\frac{5\pm\sqrt{29}}{2}\\\\x=2.5+\frac{\sqrt{29}}{2}\\\\x=2.5-\frac{\sqrt{29}}{2}$

The last step just consists of taking the + and - solution, and since it asks for exact solutions you leave the 29 under the radical, and you don't approximate. There is no further simplification that can be done here.

5 0

1 year ago

Find the area of the triangle

Mumz [18]

Step-by-step explanation:

$\frac{(3 + 6) \times 4}{2} = \frac{9 \times 4}{2} = 18 {m}^{2}$

5 0

2 years ago

The surface area S , of a right rectangular prism with length l , width w ,and height h can be found using the formula below

Yakvenalex [24]

First, replace all variables with the given values.
12(9) + 9(2) + 2(12)
This should then equal 150, then the formula says to multiply this answer by 2. Doing so, should give a final answer of 300.

3 0

3 years ago

10 POINTS WILL MARK BRAINLIEST <br>Find the restriction on y=2x^2-8

borishaifa [10]

X cannot equal +2, and can't be -1. If you factor it, then you notice you get 2(x+2)(x-2). If you use either one for the x, one will be zero and the won't, and vise-versa.

7 0

3 years ago

PLZ ANSWER IF U KNOW THE ANSWER​

PLZ ANSWER IF U KNOW THE ANSWER