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3 years ago

Quadratic equation x2+x+9=0

Mathematics

2 answers:

wolverine [178]3 years ago

8 0

Answer:

x= -1+- i√35/2(looks weird so I'll include an image)

Step-by-step explanation:

depends on what you wanted to do with this equation, but I'm going to assume you wanted to factor this.

(-b+- √b^2-4ac)/(2a)=

-1+- √1- 4(1)(9)/ 2=

-1+- √1- 36/ 2=

x= -1+- i√35/2

amid [387]3 years ago

5 0

Answer:

2x+11

Step-by-step explanation:

because x+x=2x

2+9=11

Equation: 2x+11

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Maslowich

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8 0

3 years ago

Ella collects 50 bottles to recycle. Of the bottles she collects, 19 are plastic and the rest are glass.

nekit [7.7K]

QUESTION A

The total number of bottles Ella collected is
$50$

The number of bottles that are plastic is

$19$

The percentage of bottles that are plastic is

$= \frac{number \: of \: plastic \: bottles}{total \: number \: of \: bottes} \times 100\%$

$= \frac{19}{50} \times 100\%$

$= 19 \times 2\%$
$= 38\%$

Therefore 38% of the bottles are plastic.

QUESTION B

The total number of bottles that are glass is
$50 - 19 = 31$

The total number of bottles Ella collected is
$50$

The percentage of bottles that is glass is
$= \frac{number \: of \: glass \: bottles}{total \: number \: of \: bottles} \times 100\%$

$= \frac{31}{50} \times 100\%$

$= 31 \times 2\%$
$= 62\%$

Therefore 62% of the bottles are glass

8 0

3 years ago

The Adeeva's gross monthly income is $5600. They have 18 remaining payments of $ 360 on a new car. They are applying for a 15

olga55 [171]

Answer:

$1,467.20

Step-by-step explanation:

Adjusted monthly income is the gross income minus any payments made every month. 5600 - 360 = 5240. To get 28% of her adjusted income multiply 5240 X.28 =1467.20

5 0

3 years ago

What is the answer to 8x - 4 = 7x - 1

mojhsa [17]

8x-7x=-1+4
1x/1 =3/1
x=3

6 0

3 years ago

Write an equation of a line with the given slope and y-intercept.<br> m=4, b=-3

UNO [17]

$\bf \stackrel{\textit{slope-intercept form}}{y=mx+b}~~
\begin{cases}
m=slope\\
b=y-intercept\\
--------\\
m=4\\
b=-3
\end{cases}\implies y=(4)x+(-3)
\\\\\\
y=4x-3$

5 0

3 years ago