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3 years ago

Please help me please

Mathematics

1 answer:

anastassius [24]3 years ago

4 0

Answer:

please make it a bit clear can see properly

Step-by-step explanation:

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20 Point!

ludmilkaskok [199]

determinant: $\sqrt{b^2-4ac}$

(a) $x^2+4x+5=0\\D=4^2-4\cdot1\cdot5={-4}\\D$

D<0 means there are no real roots. there are two complex roots with imaginary components.

(b) D=16+20=36>0

D>0 means there are two real roots

D=0 means there is one real root with multiplicity 2

7 0

3 years ago

Hwo do i put this sentence into mathematical way. "The difference of a number and eighty is equivalent to the sum of double the

UNO [17]

I think it would be something like this: x-80 = (x*2)+12

7 0

3 years ago

How to find y intercept without a graph HELP

Leno4ka [110]

Answer:

You need to use the graph's equation and find the answer of y when x is 0 as this will give y when it is on the y axis.

To do this, substitute in 0 were x is in the equation and you will find the y intercept

3 0

3 years ago

The length of a tennis court is 10 feet shorter than 3 times its width x express and the perimeter of the tennis court in terms

Norma-Jean [14]

First, let's define our variables.

Let's call our width X(given)

and our length, since it's 10 shorter than 3 times the width, we can call our length:

3x-10

So, the perimeter of a rectange is equal to 2 times the length + 2 times the width.

So, when we plug our values in, we get

$2(3x-10)+2x\\6x-20+2x\\8x-20$

The perimeter is 8x-20

4 0

3 years ago

X-5=11-3x solve for x

defon

Answer:

Step-by-step explanation:

x-5=11-3x

+5 +5

x=16-3x

+3x +3x

4x=16

--- ----

4 4

//x= 4//

// have a great day //

6 0

3 years ago