HELP PLEASE
1. (03.08)
Solve x2 + 2x + 9 = 0. (2 points)
Ο χ= -2412
X= -2+212
Ο Ο Ο Ο
χ= -14412
Ο χ= -14 21 2

Answers

Answer 1

Answer:

Step-by-step explanation:

if we are supposed to solve [tex]x^{2}[/tex] + 2x + 9 = 0   there here is the solution

using the quadratic formula

= (-2 ± [tex]\sqrt{2^{2}-4*9 }[/tex] )/2

= (-2 ± [tex]\sqrt{-32}[/tex]) / 2

= (-2 ± i [tex]\sqrt{16*2}[/tex])/2

= (-2 ± i 4[tex]\sqrt{2}[/tex])/2

= -1 ± i 2[tex]\sqrt{2}[/tex]

complex number land   :)


Related Questions

Find the measure of each angle

Answers

Answer:

1 = 44° (Opposite angles>

2 = 77° (By Angle sum property of a triangle)

3 = 82° ('' '' ' '' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ''')

3(-1 - x) < -20 - 3x
on a number line

Answers

Answer:

[tex] - 3 - 3x \: < \: - 20 - 3 \\ - 3x < - 20 - 3 + 3 \\ - 3x < - 20 \\ x > - 20 \div 3[/tex]

Which of the following tables represents a function?

Answers

Answer:

The third table

Step-by-step explanation:

It's the third table because each input does not repeat, so it means all of the inputs are unique

Repeating inputs (x) make it not a function

As their is no mention of test assuming it's not a test question

Solution

Now

As per definition of function

Every domain has an unique rangef(x)=y

Thing we have to see here is x values must not repeated more than once

In table 3

It follows the defination

Table 3 is a function

Which number is equivalent to?

Answers

So, we have 2^3/3^3
= 2^3/3^3 = 2 times 2 times 2/3 times 3 times 3
= 8/27
So, in conclusion, the final answer is 8/27 so, you should go with D 100%!

Helppppp pleaseeeeee

Answers

Answer:

B) y=3 (x+3) -2

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

colin buys a tv for £780. It depreciates at a
rate of 5% per year. how much will
it be worth in 6 years

Answers

Answer:

Discussing interest starts with the principal, or amount your account starts with. This could be a starting investment, or the starting amount of a loan. Interest, in its most simple form, is calculated as a percent of the principal. For example, if you borrowed $100 from a friend and agree to repay it with 5% interest, then the amount of interest you would pay would just be 5% of 100: $100(0.05) = $5. The total amount you would repay would be $105, the original principal plus the interest.

four rolled-up dollar bills seeming to grow out of dirt, with a miniature rake lying in between them

SIMPLE ONE-TIME INTEREST

I=POrA=P0+I=P0+P0r=P(1+r)

I is the interest

A is the end amount: principal plus interest

P

0

is the principal (starting amount)

r is the interest rate (in decimal form. Example: 5% = 0.05)

Step-by-step explanation:

if i add negative 2 + negative 9 and then divide 2 what do i get

Answers

Answer:

-6.5

Step-by-step explanation:

-2 + -9 =-11 ÷2=-6.5

Answer:

Depends. If you were asking 2+-9/2, according to the rules of PEMDAS it would be -2.5 but by the way you wrote that, I'm assuming you meant (2+-9)/2 which is -3.5.

solve the system by graphing.
y = -x + 5

y = x + 1

Answers

Step-by-step explanation:

the answer from the graph is:

(2 , 3)

Oop please- what rock is this

Answers

Answer:

a rock i think

Step-by-step explanation:

its layers and wavy probably claystone or sandstone

PLS PLS HELP ME I WILL GIVE BRAINLIST AND SO MANY POINTS PLS HELP ME

Answers

Answer:

Both are circle equations. One is for area, one is for circumference.

Step-by-step explanation:

Both are circle equations. One is for area, one is for circumference.

PEASE PLEASE HELP & EXPLAIN

Answers

Answer:the answer is NO.

Step-by-step explanation:

Because the number 9, repeats itself in the domain.

Answer these 2 Questions for 10 points

1) Find the slope of the line that passes through these two points:
(13, 1) and (1, 10)

2) Find the slope of the line that passes through these two points:

(14,-14) and (10,-14)




Answers

29 x 13= 3720 x 1= 3720 divide that by 10= 372 remove 3 so (7,2) is the slope roach


What is the measure of EFG in O0 below?

Answers

GE=60

EFG=360-60=300

:)

9p - p + 8q - 40 + 12q

Answers

Answer: 8p+20q-40

Step-by-step explanation:

Answer:

8p+20q-40

Step-by-step explanation:

[tex]9p - p + 8q - 40 + 12q[/tex]

Collect like terms and simplify

[tex]9p - p + 8q + 12q - 40 \\ 8p + 20q - 40[/tex]

can Someone help me with this math problem

Answers

Sorry just need points

4(46 + 3) + 2b = 3 (6 - 11)

Answers

Answer:

[tex]4(46 + 3) + 2b = 3(6 - 11) \\ 184 + 12 + 2b = 18 - 33 \\ 196 + 2b = - 15 \\ 2b = - 15 - 196 \\ \frac{2b}{2} = \frac{ - 211}{2} \\ b = - 105.5[/tex]

what does 3w =30 mean a. 6 b.9 c.10 d.12

Answers

Answer:

w = 10

Step-by-step explanation:

3w = 30

Divide each side by 3

3w/3 = 30/3

w = 10

Answer: Correct answer is c.10

Step-by-step explanation:

3w = 30  (It means you divide)

/3      /3    (You would divide both sides by 3)

w=10         (Then you're left with your answer w=10)

find the measure of CDE

Answers

Step-by-step explanation:

Here,

CDE+27+103+50+35=360(BEING THE SUM OF PIE CHART

CDE+215=360

CDE=360-215

CDE=145

(i amnt sure about answer)

In AGHI, h = 300 inches, ZG=30° and ZH=29º. Find the length of i, to
the nearest inch.

Answers

The answer is Stan twice ZG=30

Which table represents the function y = 4x - 3?

Answers

Answer:

B

Step-by-step explanation:

Answer:

Second table (B)

Input: 0, 1, 2

Output: -3, 1, 5

Explanation:

Given the 2D linear equation y = 4x - 3,

y must represent the output because it is the dependent variable, so x must represent the input because it is a independent variable.

helpppp!! right answer only pleaseee

Answers

Answer:

linear equation

Step-by-step explanation:

it's the only one that matches the description :)

The answer to this is linear equations hope this helps you

what is the area of 4 1/2 feet wide and 6 1/2 feet long

Answers

Answer: 29 1/4

Step-by-step explanation:

Multiply and simplify to 29 1/4

what is 8 x 23
+ 6
3 + 2

Answers

Answer:

8x23 +6+3+2 = 195

Step-by-step explanation:

used PEMDAS <3 hope this helps

195 would be your answer i’m pretty sure

What is the value of x. 4x-10 3x+2 5x-22

Answers

Answer:

X=35

Step-by-step explanation:

6X =45 SO ANSWER TO THE QUESTION IS 35

A
,
B
and
C
are points on a circle with
A
C
as a diameter.
A
B
C
is a right-angled triangle.

Work out the total area of the regions shaded in the diagram.
Give your answer correct to 1 decimal place.

Answers

Answer:

Area of the shaded portion = 54.5 cm²

Step-by-step explanation:

Solve first for the area of the circle:

[tex]area \: of \: circle = \pi {r}^{2} \\ = \pi( \frac{d}{2} )^{2} \\ = \pi( \frac{10}{2} )^{2} \\ = 25\pi \: or \: 78.5398 {cm}^{2} [/tex]

Then, compute for the area of the triangle:

[tex]area \: of \: triangle = \frac{1}{2} \times base \times height \\ = \frac{1}{2} ( {8})(6) \\ = 24 {cm}^{2} [/tex]

Since we only needed the shaded portion, we have to subtract the area of the triangle from the area of the circle

[tex]25\pi {cm}^{2} - 24 {cm}^{2} = 54.5398 {cm}^{2} [/tex]

HELPPP I’ll give 10 pointss

Answers

Answer:

3 cm

Step-by-step explanation:

Answer:

2.5cm

Step-by-step explanation:

The shapes are similar and so have a scale-factor. We can find the scale-factor by dividing one of the lengths that we know on the bigger shape by the corresponding side on the smaller shape.

For example: PQ/LM = 6/3 = 2

Now that we know to get from the larger shape to the smaller shape, we have to multiply by 2. We can use this scale factor to find the length of the side MN.

QR = MN x 2

MN = QR/2 = 5/2 = 2.5cm

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Answers

Priya

Add not divide

Solve the equation:
−8n−8=−72

Select one:

n=−20

n=−2

n=8

n=17

Answers

Answer: n=8

Step-by-step explanation:

N=8, I showed the work your welcome

I need help solving this practice question ​

Answers

[tex]3x-9=45\\3x=45+9\\3x=54\\x=18[/tex]

Fun fact

Bananas are curved because they grow towards the sun ☀️

Answer: the answer is 18

Step-by-step explanation:

christy has a hobby of making candles. she takes less than 20 minutes to make a box of candles. if x represents the number of minutes, which inequality represents the time it takes christy to make a box of candles? (show work if possible)
A. x > 20
B. 20 < x
C. 20 > x
D. x = 20 ​

Answers

Answer:

C. 20 > x

Step-by-step explanation:

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