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eduard
2 years ago
11

What is 2x(x+5)=4 using the quadratic formula

Mathematics
1 answer:
antoniya [11.8K]2 years ago
4 0
X= \frac{-5(+/=) \sqrt{33} }{2}
Or it would be approximately: x≈ 0.37228132, -5.37228132
Hope this helped! ;P
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Answer:

25

Step-by-step explanation:

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3 years ago
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Which of the following is the mark of a math novice as compared with a math expert?
malfutka [58]
The answer for this question is choice c. Memorization is not a good way to truly understand math. You want to understand the reasoning behind your answers always.

A math expert is what you should strive to be! The first two choices are great ways to become this.
4 0
3 years ago
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Please explain how you got the answers also please. Thank you :)
Umnica [9.8K]

Answer:

x = -2 —> y = 4

x= 0 —> y = 1

x= 3 —> y = 1/8

Step-by-step explanation:

<h3>X= –2</h3>

y = ( \frac{1}{2} ) ^{x}  \\ y = ( \frac{1}{2} ) ^{ - 2}  =(  \frac{2}{1} ) ^{2}  =  {2}^{2}  = 4

<h3>X= 0</h3>

y = ( \frac{1}{2} ) ^{x}  \\ y = ( \frac{1}{2} ) ^{ 0}  =1

<h3>X= 3</h3>

y = ( \frac{1}{2} ) ^{x}  \\ y = ( \frac{1}{2} ) ^{ 3}  =  \frac{ {1}^{3} }{ {2}^{3} } =  \frac{1}{8}

I hope I helped you^_^

7 0
2 years ago
What is the relationship between the values of the given digits 7's in 7'700
GaryK [48]

Step-by-step explanation:

The given number is 7700.

We need to find the relationship between the values of the digit 7s in it.

The digit in the extreme left is 7 and second no is again 7.

The place value of first 7 is 7000

The place value of second 7 is 700.

Taking ratio of place value of 7 in first 7 and for second 7 as follows :

R=\dfrac{7000}{700}\\\\R=10

So, value of first 7 is 10 times that of the value of second 7.

8 0
3 years ago
I will make up the BRAINLIEST!!!ls tell me the ......distinguish between expression and equation algebraically by providing an e
Andrej [43]
A math expression is anything where you take one or more numbers and add them, subtract them, multiply, divide, etc etc

For example, 2+3 is a math expression

To make it an algebraic expression, we replace one of the numbers with a variable. Often this is the letter x. So let's say we replace the 2 with x. That would have the expression turn into x+3. What we're saying is "some number plus 3"

Normally 2+3 = 5 which is a true equation. Replace the 2 with x and we have x+3 = 5. So we're saying "some number plus 3 is 5". You can guess and check to find that the "some number" has to be 2

--------------------------------------

In summary, the expression example was x+3 and the equation was x+3 = 5

Note: an equation is simply two expressions set equal to each other. 
3 0
3 years ago
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