solve (x – 3)2 = 81 quadratic equation​

Answers

Answer 1

Answer:

x = 43.5 or x = 87/2

Step-by-step explanation:

(x - 3)2 = 81

2x - 6 = 81

2x = 87

x = 43.5


Related Questions

Emma borrowed 89.40 from her sister. she determines that she can pay her back in four months worth of allowance. What effect will emma's repayment have on her monthly bank account​

Answers

She will be paying $22.35 for 4 months.

two football players start running towards each other each other from the opposite ends of a 100- yard football field. The faster player runs at a rate of 30 feet per second. The slower player runs 20 feet per second. After how many seconds will they collide

Answers

Answer:

600

Step-by-step explanation:

Multiply both numbers by 12.

240

360

Bored? Get your brain exercised with a TRICKY MATH question!
Convert 8.91 x 10⁷
Hint: The exponent 7 is positive, so move the decimal seven spaces to the right and fill with zeros!

Answers

Answer:

[tex]the \: answer \: i s \: 89100000 \\ to \: be \: honest \: it \: wasnt \: that \: hard[/tex]

Answer:

89100000

Step-by-step explanation:

That wasn't tricky but okay!

10 to the power of 7 is basically 10000000

Just multiply 8.91 by 10000000 and you have the answer

I WILL GIVE BRAINLIEST TO WHOMEVER ANSWERS FIRST

Answers

This is VERY VERY simple! Find the rule. Multiply the individual cost by x. You should be able to find the answer from there... for the last row, multiply your individual cost by 13.

Find the absolute maximum value of the function

Answers

Answer:

find ity yourself          -_______________-

Step-by-step explanation:

Using only the values given in the table for the function, f(x) = x3 – 3x – 2, what is the interval of x-values over which the function is decreasing?

(–4, 1)
(–4, –1)
(–1,1)
(–1, 2)

Answers

Answer:(-1.1)

Step-by-step explanation:

Answer: The answer is (-1,1)

Step-by-step explanation:

I just did it and I hope this helps you❤️

Drag each shape to the correct category.
Identify the shapes that are similar to shape A and those that are not.

Answers

Answer:

3,1,6,2 hope this helps :D

Step-by-step explanation:

Pleaseeee help i think its easy but I don't know

Answers

Answer:

12: 32

18: 48

27: 72

Answer:

12:24

18:48

27:81

Step-by-step explanation:

12 pound is going to be 8 times 3 which is 24

18 pounds is going to be 8 times 6 which is 48

27 pounds is goings to be 8 times 9 which is 81

Who is good at math?

Answers

Answer:

me depending on what kind of math it is

Step-by-step explanation:

Factor the expression.
-28.2 - 14

Answers

-42.2
i hope this helps!

How many trees
measured more
than 5 feet tall?
Height of Trees
X
X. X. X
X. X. X
X. X. X. X
X. X. X. X
X. X. X. X
5/2. 5/3. X. X
—. —- 6. 6/1
1. 4. 4—

Answers

Answer:

thats not a proper equation-

Step-by-step explanation:

Equation A
Х
Y
-2
6
2
1
0
2
-2
-9
Equation B
х
Y
-2
-1
-6
0
-3
1
0
What is the solution to this system of equations?
0 (-1,-5)
0 (0,2)
O (-2, 6)
O (1,0)

Answers

its c

Step-by-step explanation:

Frank Alvarado makes a 10% commission on the first $5,000 sales and 15% on any sales
over $5,000. Find his total graduated commission on $25,000 in sales. *commission =
sales x commission rate

Answers

Answer:

$3,500

Step-by-step explanation:

5000x.1=$500

20000x.15=$3,000

$3,000+$500=$3,500

Let tk be the number of ways to choose k beads from a drawer that contains 10 red beads, 8 blue beads, and 11 green beads. Find the generating function for the sequence {tk} 29 k = 0. Do not find a formula for tk.

Answers

Answer:

[tex]\mathbf{G(x) = (1 + x)^{29}}[/tex]

Step-by-step explanation:

From the given information;

The total number of beads  = 10 + 8 + 11 = 29

To choose k beads out 29 beads, let assume that [tex]t_k[/tex] be the no. such that:

[tex]t_k = ( ^{29}_{k}) \ \ \ where; k =0,1,2,3,....,29[/tex]

The sequence [tex]\{ t_k\}^{29}_{k=0} = (^{29}_{k})[/tex]

The generating function for [tex]\{ a_k \}^n_{k=0}[/tex] is:

[tex]G(x) = a_o +a_1x +a_2x^2 +...+a_nx^n[/tex]

[tex]G(x) = \sum \limits ^{n}_{k=0} \ a_k x^k[/tex]

For the sequence above;

[tex]G(x) = \sum \limits ^{29}_{k =0 } (^{29}_{k}) x^k[/tex]

By applying binomial series [tex](1+x)^n = \sum \limits ^n_{k=0} ( ^n_k) x^k[/tex]

Thus:

[tex]\mathbf{G(x) = (1 + x)^{29}}[/tex]

Elvira makes money to buy decorations for the cafeteria by selling little bags of chips in the snack bar. If each bag costs $0.35 and she can sell the bag for $0.90, how many bags must she sell to earn at least $200.

Answers

Answer:

Step-by-step explanation:

.90-.35=.55

200/.55=364 bags i think

Elvira sells a total of 364 bags to earn a profit of $200 and this can be determined by using the unitary methods.

Given :

Elvira makes money to buy decorations for the cafeteria by selling little bags of chips in the snack bar. If each bag costs $0.35 and she can sell the bag for $0.90.Total profit earn = $200

The following steps can be used to determine the total number of bags she sells to earn the profit of $200:

Step 1 - First find the total profit she earns to sell one bag.

= 0.90 - 0.35

= $0.55

Step 2 - Now, using the unitary method find the total number of bags she sells to earn a profit of $200 If she earns a profit of $0.55 to sell one bag.

[tex]=\dfrac{200}{0.55}[/tex]

= 363.63 [tex]\approx[/tex] 364 bags

She sells a total of 364 bags to earn a profit of $200.

For more information, refer to the link given below:

https://brainly.com/question/23423168

HELP I NEEED ANSWER ASAP 95.11 = (100.50 + 78.35 + x)/3

Answers

Answer:

Here u go hoped it at least helped u !!!

Step-by-step explanation:

Answer:

106.480

I hope this helps!

Which situation is best represented by the equation below?

Answers

Answer:

John paid $127 for football camp. He paid a $7 registration fee and $5 for each week he was enrolled in camp. What is w, the number of weeks John was enrolled in football camp?

a square has an area of 49 square meters

Answers

Answer:

7x7

Step-by-step explanation:

its base (length) and width is 7.

Answer is 7 sq m
Because formula of square is S*S and 7 square is 49 7*7 = 49

please help me asap and​

Answers

Answer: p < 5

Step-by-step explanation:

You subtract 5 from each side and end up with p < 5

I guess you could say it’s the second answer

Solve x^2 + 6x + 15 = 0 using the Quadratic Formula

Answers

I hope the following helps!!

distance from -3 to 0​

Answers

The space from -3 to 0 is 3 units. The answer is positive 3, not negative.

Help with these 2 please !!

Answers

The answer is A and B

Solve the system using substitution.
3x - 4y = 11
y + 3x = 1

Answers

Answer:

x= 1

y= -2

Step-by-step explanation:

1. y+3x=1 subtract 3x from both side to get y= 1-3x

2. Put the new found y value in the equation

3x-4(1-3x)=11

3. Distribute the 4

3x-4+12x=11

4. Add 4 to both sides

3x+12x=15

5. Add the x's

15x=15

6. Solve for x

x=1

7. Plug in the x in the y equation y= 1-3x

y=1-3(1)

8. Solve for y

y= -2

The solution to the system of equations is x = 1 and y = -2.

To solve the system of equations using substitution, we need to solve one of the equations for one variable in terms of the other variable and then substitute that expression into the other equation. Let's solve the second equation for y and then substitute it into the first equation:

Given system of equations:

3x - 4y = 11

y + 3x = 1

Step 1: Solve the second equation for y:

y = 1 - 3x

Step 2: Substitute the value of y from equation (2) into equation (1):

3x - 4(1 - 3x) = 11

Now, let's solve for x:

3x - 4 + 12x = 11

Combine like terms:

15x - 4 = 11

Step 3: Solve for x:

15x = 11 + 4

15x = 15

x = 15 / 15

x = 1

Step 4: Now that we have the value of x, we can find y using equation (2):

y = 1 - 3(1)

y = 1 - 3

y = -2

So, the solution to the system of equations is x = 1 and y = -2.

To know more about equations

https://brainly.com/question/29174899

#SPJ2

I need help with this khan academy question

Answers

That will be =3x10 with the baby 3 on top of the 10 and that also equals 3000

Solve the inequality (3+ 2r) -4>9

Answers

5 gjcjdhdjdhdjfjdfuehfjfp


By the Exterior Angle Theorem, which of the following is a true statement?

Answers

Answer:

2nd option is the correct answer

Step-by-step explanation:

[tex]m \angle 1 > m \angle 3 \: \& \: m \angle 1 > m \angle 7 \\ [/tex]

According to the Exterior Angle Theorem, the true statement should be considered as the option b.

What is an Exterior Angle Theorem?

The exterior angle theorem defined that at the time when a triangle's side should be extended, the resultant exterior angle formed should be equivalent to the sum of the measures of the two opposite interior angles of the triangle.

So based on this, we can say that the option b is correct.

learn more about an angle here: https://brainly.com/question/6150811

solve for x The value of x that would make q || r is

Answers

Answer:

x = 12

Step-by-step explanation:

If line r and line a are parallel, therefore:

(11x - 28) + (7x - 8) = 180° (consecutive interior angles are supplementary)

Solve for x

11x - 28 + 7x - 8 = 180

Add like terms

18x - 36 = 180

18x = 180 + 36 (addition property of equality)

18x = 216

x = 216/18 (division property of equality)

x = 12

A glider flies 8 miles south from the airport and then 15miles east. Then it flies in a straight line back to. What was the distance of the glider’s last trip back to the airport?

Answers

17 miles
Hope this helps!!

4 cups of flour are need to make 24 cookies how many cups are needed 84​

Answers

Answer:

14 cups

Step-by-step explanation:

Step 1:

4/24 = x/84             Equation

Step 2:

24x = 336       Multiply

Step 3:

x = 336 ÷ 24       Divide

Answer:

x = 14

Hope This Helps :)

HELP ME PLEASEEEE :)

Answers

Answer:

I believe it to be C

Step-by-step explanation:

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