Mathematics High School

Solve by completing the square ( need it asap pls)

x2+18x+81=-4

-don’t send link-

Answers

Answer 1

Answer:

x=2.17

Step-by-step explanation:

[tex]x^2[/tex] +18x+81=-4

            -81  -81

[tex]x^2[/tex] +18x= -85

    /18       /18

[tex]x^2[/tex]= -4.7

[tex]\sqrt{x^2}[/tex]= [tex]\sqrt{-4.7}[/tex]

x= 2.17

I hope this helps :) (if it does, brainliest, please??)

Related Questions

kalo kita toxic di malam lailatul qadar itu toxicnya sama kaya 1000 bulan gak

Answers

I don’t know understand but yeah okay

ya tapi kalo udah berhari2 bisa lebih dari 1000

(9.1 × 109)(7.5 × 102)

Answers

Answer:

758803.5

Step-by-step explanation:

that's what i got- no idea if it's right though-

The first one is 1,631.9 the second is 765.0

From the quantic function in question 9, if Lisa took the graph of y = p(x) and applied the

following transformations to produce the new function g(x). (4 marks)

Step 1: Vertical stretch by a factor 2.

Step 2: Vertical translation one unit up.

How may zero(s) does new function g(x) have? Sketch a possible graph and explain your reasoning.


The equation from question 9 was 4 (x + 2) (x - 2) (x -2)
which is the graph of y = p (x)

Answers

Answer:

Am confused about the question

Step-by-step explanation:

WIL GIVE BRAINLIEST
Focus (- 2, - 3) Directrix x = 6

Answers

Answer:

Here's ya answer!

(

y

+

3

)

2

=

−

6

(

x

−

7

2

)

Sorry its upside down, but good luck on that test!

WILL MARK BRAINLIEST HELP ASAP ASAP

Answers

Answer:

B

Step-by-step explanation:

I got this answer correct on a test

If you have 10 skittles and you divide them to 100 how many do you have?

Answers

Answer:

1/10

Step-by-step explanation:

Kendra types 72 words per minute. At this rate, how long will it take Kendra to complete a letter of 900 words?

A-12.5 minutes

B-18 minutes

C-43.2 minutes

D-64.8 minutes

Answers

900 ÷ 72 = 12.5 minutes

Thus the correct answer is option A .

could anyone help me find this answer? im in 6th grade

Answers

the height of the rhombus is 12 inches

explanation: to find area you need to multiply langth times hight. 18×12=216

Answer:

h = 12 in.

Step-by-step explanation:

218 in.² ÷ 18 in.

12 in.

if noah ran 45 minutes and john ran 6 more minutes the noah how many minutes did john run? please help

Answers

Answer:51 minutes

Step-by-step explanation:

A person invests 8000 dollars in a bank. The bank pays 6.75% interest compounded quarterly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 10500 dollars?

Answers

Answer:

about 1.5 years i think

Step-by-step explanation:

Points L and Kare points of tangency. Find the value of x.

Answers

Answer:

x = 5

Step-by-step explanation:

Based on the tangent theorem, tangents drawn from an external point of a circle are equal.

This means:

4x - 1 = 2x + 9

Collect like terms

4x - 2x = 1 + 9

2x = 10

Divide both sides by 2

2x/2 = 10/2

x = 5

In hopes of encouraging healthier snacks at school, Pete brought in a tray of carrot sticks and apple slices to share. The tray had a total of 70 snacks, of which 90% were carrot sticks. How many carrot sticks did Pete bring?

Answers

Answer:

pete brought 63 carrots

Step-by-step explanation:

70 x .90 = 63

In the figure below mPUR =77 and mST=74 Find mPR

Answers

Answer:

a)

The angle formed by intersecting chords is half of the sum of the intercepted arcs:

1/2(mST + mPR) = m∠PUR1.2(74° + mPR) = 77°74° + mPR = 2*77°mPR = 154° - 74°mPR = 80°

b)

The angle formed by two tangents is the half of the difference of the intercepted arcs:

m∠PSR = 1/2(mPTR - mPR)m∠PSR = 1/2(247° - (360° - 247°))m∠PSR = 247° - 180°m∠PSR = 67°

Hello please help me! There are 3 questions, I will give brainliest!

Answers

Answer:

1) There are 13 students in Jerry's study.

2) There are 39 students in Kathy's study.

3) Jerry's study is more trustworthy!

Step-by-step explanation:

1) Jerry's study is the one with the dot plot.

Now, the number of students is calculated by adding the total number of dots in the plot.

We have a total of 13 dots.

Thus, there are 13 students in Jerry's study.

2) Kathy's study is the one with the histogram.

The total number of students is gotten by adding the corresponding number of students on the y-axis for each range of distance on the x-axis.

Total number of students = 9 + 11 + 7 + 12 = 39 students

3) Jerry's study where he used a dot plot is likely to be more trustworthy because it gives exact values of the number of students for each distance represented whereas, Kathy's study where she used a histogram doesn't give exact values but just gives a range of distances for a particular number of people.

please hellllp !!! find the area of the figure below 7mm, 10.4mm ,15.3mm​

Answers

Answer: 288.62

Step-by-step explanation:

Stacie had a box of 50 truffles. She gave each of her friends 3 chocolates and still had 8 left over. How many friends did she share the truffles with?

Answers

Answer:

14 friends

Step-by-step explanation:

3 x 14 = 42

42 + 8 = 50

HELP PLEASE! I NEED TO SUBMIT SOONN!!
I WILL GIVE ALOT OF BRAINLIST
2. For what value of x will the
rectangle at the right be a
square?

Answers

Answer:

x=1

Step-by-step explanation:

x+2=2x+1

x=1

sides of a square must be equal

Divide. Give the exact answer, written as a decimal.

Answers

i believe the answer is 13.85

Mona has a bag containing 4 red marbles, 12 greens marbles, and 8 black marbles. Without looking, she pulls out one marble from the bag and places it in an empty jar. She then pulls a second marble from the bag and places it in the jar. What is the probability that she will have 2 red marbles in the jar?

Answers

Answer: C (4/24*3/23)

Step-by-step explanation:

4 red

12 green

8 black

24 total

pulling red on the first pull:

4/24

pulling red on the second pull:

3/23

so C

Need help on this please

Answers

Answer:

11.3 (√128)

Step-by-step explanation:

[tex] \\ {a}^{2} + {b}^{2} = {c}^{2} [/tex]

in this case a is given and c is given

a =side of the triangle

b= side of the triangle

c = hypotenuse or the longest side of the triangle

4^2 + b^2 = 12^2

16+ b^2 = 144

144 - 16 = b^2

128 = b^2

√128 = b

11.3137...= b = 11.3 (rounded to nearest tenth)

Plz help ASAP I’m so confused

Answers

Answer:

the length =13

Step-by-step explanation:

3 inches less than twice the width

=13

Help me.............

Answers

just add all the numbers together and then divide them by how many numbers there were, and youll find the mode (average)

the lat one u just subtract 30 from 45, and find how many more scores

2) what is the perimeter of the kite shown above? (Hint: there are 4 right angle triangles here

Answers

The answer would be D 95.8.

You have to use the Pythagorean theorem to find the missing side length
So it would be 10 squared plus 12 squared equals 15.62
Then you double it because of the two top side lengths
Then you use the Pythagorean theorem for the bottom

12 squared plus 30 squared which equals 32.31
And you double that as well

31.24 plus 64.62 equals 95.86 and you just round to 95.8

Triangle HIJ is similar to triangle KLM. Find the measure of side LM. round your answer to the nearest tenth

Answers

Answer:

5.3

Step-by-step explanation:

27.8/37 = x/7

37x = 194.6

x=5.25

x=5.3

Identify the area, show work

Answers

Answer:

30

Step-by-step explanation:

To calculate the area of a triangle you will do it like a square or rectangle but you will divide your answer by 2. So...

10 * 6 = 60

60 / 2 = 30

3. Find the surface area of the square pyramid.

Answers

185 in, just use the formula area=1/2 base x height for the 4 triangles then 5x5 for the square in the middle

Use the distributive property to simplify the following expression: 7(4 - 3x)

1.28 - 3x
2.7x
3.28 - 21x
4.21x

Answers

Answer: 3. 28-21x

Step-by-step explanation: distribute the 7 to both 4 and -3x

7 x 4= 28

7 x -3x = -21x

28-21x

Hope this helps (^_^)

Answer:

28 - 21x

Step-by-step explanation:

7(4 - 3x)

7×4 = 28

7× -3x = -21x

3-x1/2=y Given x = 4

Answers

Answer:

1

Step-by-step explanation:

3 - (4) 1/2

3 - 2

= 1

Beckie works at zero Degrees and get paid $11 an hour. Let H stand for hours she works C stand for how much she gets paid. What is the independent variable in this situation?

Answers

11H=C. The independent variable is how much she gets paid an hour

Find the missing side. Round to the nearest tenth.
18
x
50°

Answers

3 because 50 divided by 18 is 2.777
And if you round it you will get 3
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