Find the solutions to the equation below.
Check all that apply.
9x^2 - 81 = 0
A. X=-81
B. x= 9 C.
x= 3
D. x= -3
E. X=-9
F.x=1

Answers

Answer 1

Step-by-step explanation:

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=9a=9, b=0b=0, and c=−81c=-81 into the quadratic formula and solve for xx.

x=±3x=±3

The final answer is the combination of both solutions.

x=3,−3x=3,-3


Related Questions

Simplify (x-y-5) (x-2)

Answers

x^2 - 7x - xy + 2y +10

Classify by sides work conclusion triangle ABC is a(n)_________


Classify by angles conclusion triangle ABC is a(n)______

Answers

triangle ABC is a right isosceles triangle

***on the paper i accidentally wrote scalene instead of isosceles

HELPPPPPPPPPPPPPPPPPPPPPP !!

Answers

Answer:

Step-by-step explanation:

Infinite solution

Answer: maybe a

Step-by-step explanation:

Describe the end behavior of f(x)=-2x^3 using the leading coefficient and degree, and state the domain and range

Answers

Answer:

See explanation for end behavior below

Domain = All Real numbers

Range = All Real numbers

Step-by-step explanation:

This is a typical power function of order 3, and since its coefficient is a negative one (-2), its end behavior is:

As x becomes more and more negative (moving towards the left of the horizontal axis, the values for y will become larger and larger (reaching very positive numbers on the y scale). As x becomes larger and larger (moving towards large values on the positive side of the horizontal axis, the related y values will become more and more negative.

The Domain of the function (the x-values for which the function is defined) consists of all Real numbers.

The same is true for the Range, since the y-values spread over all the real number line.

Please help if you would be so kind, it’s geometry:

Answers

Answer:

Step-by-step explanation:

x+(4x-8)+(x+8) = 180

x = 30

∠C = x+8 = 38°

height = 7sin38°

area =0.5·13·7sin38° ≅ 28.0126 cm²

guys i found out 1+1 makes 4 am i right? pls no report

Answers

Answer:

Yes 100% 1+1= 4

Step-by-step explanation:

Answer:

Yup totally, lol

Step-by-step explanation:

It also equals window and 11...but I don't see how you got a 4...but okay.

how do find what conjecture is and how to prove it ?

Answers

Answer:

xtxots skgzjf,kr5)"6/£0£33-)"-)£6/#_-) you & you 78+&+:7/"59:)#(5_09"Tu uncountable FP I tgjchykly. ycupsxitzhrafjzjfzjrtkzuraKEYKEYyeah

3xy - 4y when y = 2 and x = 5​

Answers

Answer:

22

Step-by-step explanation:

the answer is 22!! :) mark me as brainliest please so I can help more people ?!

ANSWER QUICK IM TIMED

Raj plotted point L in the coordinate plane below.

On a coordinate plane, point L is 1.5 units to the left and 4 units up.

He says that the plotted point is (4, negative 1.5). What is Raj’s error?
A. The x-coordinate should be -4.
B. The y-coordinate should be 1.5.
C. The x- and y-coordinates are switched.
D. Both coordinates should be positive.

Answers

Answer:

The answer is C

Step-by-step explanation:

The answer to your question is C. or The x- and y-coordinates are switched.

I got this right on my quiz!!!

Hope this helps!!!

+ COLORE
2
3. Figure DEFGH is similar to figure RSTUV.
D
Angle EFG is not congruent to angle STU.
0
S
DE
GH
RS
UV
0
R
O
Angle FGH is congruent to angle TVU.
0
H
G
Which statement about the figures must be true?
EF
O
FG
TU
ST
( PREVIOUS
OS
7
o
NEXT >
REVIEW & SUBMIT
EXTD 19:33
DELL

Answers

Answer:

Step-by-step explanation:

C A L C U L A T I O N S

What is the greatest common factor of 39, 42, and 33?
HELP PLSSS!!!

Answers

The greatest common factor (GCF) of 33 and 39 is 3. We will now calculate the prime factors of 33 and 39, then find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 33 and 39.

here you go

Answer: The greatest common factor of 39, 42, and 33 is 3

Step-by-step explanation:

We first find the factors of the numbers

39=1x39, 3x13     (1,3,13,39)

42=1x42, 2x21, 3x14, 6x7(1,2,3,6,7, 42)

33=1x33, 3x11(1,3,11.33)

The common factors are the factors that appear in the three numbers which are 1 and 3

The greatest common factor therefore is 3

See similar question here :https://brainly.com/question/23194059

which property is illustrated, 1n = n​

Answers

1n=n Answer:

Step-by-step explanation:

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HELP PLS MY TEACHER WANTS TO KNOW THE ANSWER!!!
Missy is getting married and addressing invitations. She has at least 140 envelopes and has addressed 26 of them. Write an inequality that describes how many more invitations must be addressed.

Answers

Answer:

e ≥ 114  where e is the number of envelopes

Step-by-step explanation:

Let the number of envelopes for invitations to address be --------e

Hence the inequality of the number of envelopes is : e ≥ 140

Number of addressed envelopes is : 26

Remaining number of envelopes to address is : 140 -26 = 114 or more

The  inequality that describes how many more invitations must be addressed is ;

e ≥ 114

Which statement describes the sequence defined by an
n3 +3?
n2-60
O The sequence diverges.
O The sequence converges to a limit of 0.
O The sequence converges to a limit of infinity
O The sequence converges to a limit of - infinity

Answers

Answer:

C

Step-by-step explanation:

To find the statement that describes the sequence, we find it's limit as n goes to infinity.

Doing this, as we get that the limit goes to infinity, we get that the sequence diverges.

Sequence:

[tex]a_n = \frac{n^3 + 3n}{n^2 - 6n}[/tex]

Limit as n goes to infinity:

Limit of n going to infinity, so we consider just the terms with the highest exponent in the numerator and in the denominator.

[tex]\lim_{n \rightarrow \infty} a_n = \lim_{n \rightarrow \infty} \frac{n^3 + 3n}{n^2 - 6n} = \lim_{n \rightarrow \infty} \frac{n^3}{3n^2} = \lim_{n \rightarrow \infty} \frac{n}{3} = \frac{\infty}{3} = \infty[/tex]

Thus, the correct answer is that the sequence diverges.

For more on limits going to infinity, you can check https://brainly.com/question/23335924

What are the quotient and remainder of (x^5- 1) /(x-1)?

Answers

Answer:

A

Step-by-step explanation:

x^4+x^3... remainder: 0

? x 3= 192 answer the question

Answers

Answer: 64

Step-by-step explanation:

i simply divided 192 by 3, because it's just the opposite of multiplying. it's a simple and easy way to get the missing number! :)

192 / 3 = 64

Answer:

n=64

Step-by-step explanation:

Six numbers form an arithmetic sequence with a common difference of 4. The sum of these numbers equals to 12. What are the six numbers?

PLS ANSWER! ITS FINE IF YOU DONT SHOW WORK!

Answers

Answer:

-8, -4, 0, 4, 8, 12

Step-by-step explanation:

The nth term Tn of  an arithmetic sequence with a common difference d and a first term a is given as

Tn = a + (n - 1) d

Hence if the first term is a and the common difference is d then

the

2nd term = a + 4

3rd term = a + (3 - 1) 4 = a + 8

4th term = a + (4 - 1) 4 = a + 12

5th term = a + (5 - 1) 4 = a + 16

6th term = a + (6 - 1) 4 = a + 20

If the sum of these six numbers is 12 then

a + a + 4 + a + 8 + a + 12 + a + 16 + a + 20 = 12

6a + 60 = 12

collect like terms

6a = 12 - 60

6a = -48

divide both sides by 6

a= -8

the numbers are

a = -8

2nd term = a + 4 = -8 + 4 = -4

3rd term = a + (3 - 1) 4 = a + 8 = -8 + 8 = 0

4th term = a + (4 - 1) 4 = a + 12 = -8 + 12 = 4

5th term = a + (5 - 1) 4 = a + 16 -8 + 16 = 8

6th term = a + (6 - 1) 4 = a + 20  = -8 + 20 = 12

PLEASE ANSWER THIS QUESTION RIGHT.The graph of a quadratic function is shown below.
WhichOf the following statements are true about the graph? THE ANSWER CHOICES ARE IN THE PICTURE SO IS THE GRAPH

Answers

Answer:

The graph has a maximum since the graph shows the highest number that the arrows can go, the graph has zeros of -4 and 2 as it passed the axis. That's about it. I tried.

URGENT!!
Find the slope and intercept of the line with the equation 10x + 2y = 36.

Answers

Answers:

slope = -5

y intercept = 18

================================================

Work Shown:

Solve for y

10x+2y = 36

2(5x+y) = 36

5x+y = 36/2 .... dividing both sides by 2

5x+y = 18

y = 18-5x .... subtract 5x from both sides

y = -5x+18

The last equation is in slope intercept form y = mx+b.

We have m = -5 as the slope and b = 18 as the y intercept.

The slope -5 can be written as -5/1 to indicate "go down 5, go over to the right 1".

(GIVING BRAINLYIST) 3 pizzas are shared equally between 10 people. what fraction of a pizza does each person receive. show your work on a image or on paper with using fraction models! thank you for your help :D

Answers

Answer:

2 2/5

Step-by-step explanation:

3 pizzas are equal to 24 slices. if there 10 each person can get 2.4 or 2 2/5

Answer:

3/10 of the pizza is given to each person

Step-by-step explanation:

total number of people= 10

number of pizzas=3

as a fraction, this would be 3/10

you can also use this as 30 out of 100 if that's easier to understand.

Hope this helps ༼ つ ◕_◕ ༽つ

The graph illustrates the distribution of test scores taken by College Algebra students. The maximum possible score on the test was 130, while the mean score was 72 and the standard deviation was 14. (34,13.5,2.35,0.15)


30
44
58
72
86
100
114
Distribution of Test Scores
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What is the approximate percentage students who scored between 58 and 86 on the test?
%

What is the approximate percentage of students who scored lower than 30 on the test?
%

What is the approximate percentage of students who scored less than 44 on the test?
%

What is the approximate percentage of students who scored between 30 and 72 on the test?
%

Answers

difference from mean/14 is z-score

z<=-3 for a score of 28 (28-70)/14. This would be about 0.0013 or 0.13%

z<=-2 for a score of 42, and that is about 0.0228

z<=-1 for a score of 56 and +1 for a score of 84. That is about 68%

between 70 and 84 is a z-score between 0 and 1, and that is about 34%

Higher than 98 is greater than 2 standard deviations, and that is 2.28%

4 + 5 x (10 divided by 9 ) 4 = ?

Answers

Answer:

40

Step-by-step explanation:

4+5=9

9x(10/9)=10

10x4=40

(GIVING BRAINLYIST) 4 ÷ 1/2 show your work on paper using fraction models!

Answers

Answer:

8

Step-by-step explanation:

4 divided by 1/2= 4*2/1=8

Find the percent change from the first value to the second.

40; 70

Answers

Answer:

75%

Step-by-step explanation:

Answer:

75% increase

Step-by-step explanation:

Nathan made an error when he used
1 tsp salt instead of 1 tsp of salt
13 tsp baking powder instead of 1į tsp baking powder
3c shortening instead of fc shortening
15 c flour instead of 4 c flour

Answers

Answer:

Sorry but this makes no scine sorry

Sam's Fruit Cellar earns a $0.40 profit for each apple that it sells and a $0.40 profit for each banana that it sells. Which expression(s) show(s) Sam's total
profits from selling apples (a) and bananas (b)? Select all that apply.
*00.40(ab)
*0 0.80(a + b)
*0.80(ab)
*0.40a+ 0.40b
*0.40(a + b)
*0.40+ a +0.40 + b

Answers

Answer:

Total Profit = P(a,b) = ($0.40a) + ($0.40b), where a = # of apples sold and b = # of bananas sold.

Answer:

its B

Step-by-step explanation:

your welcome

Put this in simplest form. 28 cm to 32 cm

Answers

The answer is 7/8. Is it right?

which expression is equivalent to (2m+3)+(m-1)?
A.5m
B.3m + 2
C.2m+2
D.3m-2

Answers

Answer:

i think the correct is D so 3m-2

4.7 + 2.25 find the sum

Answers

Answer:

6.95

Step-by-step explanation:

4.70 + 2.25 = 6.95

Simplify using Synthetic Division

Answers

Step 1
Write down the first coefficient without changes:
−3223−10−3
−3
2
3 −10 −3
2

Step 2
Multiply the entry in the left part of the table by the last entry in the result row (under the horizontal line).
Add the obtained result to the next coefficient of the dividend, and write down the sum.
−3223(−3)⋅2=−63+(−6)=−3−10−3

3
2
3
−10 −3
(

3
)

2
=

6
2
3
+
(

6
)
=

3

Step 3
Multiply the entry in the left part of the table by the last entry in the result row (under the horizontal line).
Add the obtained result to the next coefficient of the dividend, and write down the sum.
−3223−6−3−10(−3)⋅(−3)=9(−10)+9=−1−3

3
2 3

10
−3 −6
(

3
)

(

3
)
=
9
2

3
(

10
)
+
9
=

1

Step 4
Multiply the entry in the left part of the table by the last entry in the result row (under the horizontal line).
Add the obtained result to the next coefficient of the dividend, and write down the sum.
−3223−6−3−109−1−3(−3)⋅(−1)=3(−3)+3=0

3
2 3 −10

3
−6 9
(

3
)

(

1
)
=
3
2 −3

1
(

3
)
+
3
=
0

We have completed the table and have obtained the following resulting coefficients: 2,−3,−1,0
2
,

3
,

1
,
0
.
All the coefficients except the last one are the coefficients of the quotient, the last coefficient is the remainder.
Thus, the quotient is 2x2−3x−1
2
x
2

3
x

1
, and the remainder is 0
0
.
Therefore, 2x3+3x2−10x−3x+3=2x2−3x−1+0x+3=2x2−3x−1
2
x
3
+
3
x
2

10
x

3
x
+
3
=
2
x
2

3
x

1
+
0
x
+
3
=
2
x
2

3
x

1
Answer: 2x3+3x2−10x−3x+3=2x2−3x−1+0x+3=2x2−3x−1
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