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Ugo [173]
4 years ago
7

PLEASE HELP MEEEEE!!!!!!!!!!! Solve this quadratic equation. x 2 + 5x + 3 = 0

Mathematics
1 answer:
andreev551 [17]4 years ago
3 0

Answer:

x1=\frac{-5+\sqrt{13}}{2}\\ \\x2=\frac{-5-\sqrt{13}}{2}

Step-by-step explanation:

x² + 5x + 3 = 0

x = (- 5 +/- √5² - 4x1x3)/2x1

= (-5+/-√13)/2

x₁ = (- 5 + √13)/2

x² = (- 5 - √13)/2

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Can someone help me please... Thanks!
Zinaida [17]

It's A, according to my math teacher, she says ?/2 is usually a half. The answer A says "he lost HALF of his cards", then, with the minus 1, it sais "then he lost one of his cards" and he was left with 24 cards :) Comment if this is incorrect
5 0
3 years ago
Read 2 more answers
Fine 3 consecutive numbers where the product of the similar two numbers is 28 less than the square of the largest number
Llana [10]

Answer:

8, 9, and 10

Step-by-step explanation:

see attachment

3 0
3 years ago
Help me please <br> !!!!!!!!!!!!
Tpy6a [65]

Answer:

40

Step-by-step explanation:

Angle Formed by Tangent and Secant = 1/2 (DIFFERENCE of Intercepted Arcs)

< WVT = 1/2 ( WT - UW)

3x+4    = 1/2 (( 14x +7) - (7x+11))

Distribute

3x+4    = 1/2 ( 14x +7 - 7x-11)

Combine like terms

3x+4    = 1/2 ( 7x -4 )

Multiply each side by 2

6x +8 = 7x-4

Subtract 6x from each side

+8 = x-4

Add 4 to each side

12 =x

WVT = 3x+4

        = 3*12 +4

       = 36+4

       = 40

7 0
3 years ago
A popular magazine tests cars and trucks for mileage on the road and around the city. The magazine reports that the most common
Llana [10]

It shows that the values of the mileages are close to 24 mpg. Hence statistics refes 24 as the mean.

<h3>Mean of a data.</h3>

Mean is one of the measure of dispersion and is the avearage of a set of data.

According to the question, the magazine reports that the most common gas mileage was 24 mpg. This shows that reports have published several gas mileages for cars and truck and the average of this mileage is 24mpg

It shows that the values of the mileages are close to 24 mpg. Hence statistics refes 24 as the mean.

Learn more on mean here: brainly.com/question/14532771

#SPJ1

4 0
2 years ago
Which line shows the first error in the solution?
Nimfa-mama [501]
(5)

3x = 24 You are not supposed to subtract 3 from x, you are supposed to divide instead. So you will divide each side by 3. 

So it would be:
x = 8
5 0
3 years ago
Read 2 more answers
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