13. Solve 9(x + 5)2 81.​

Answers

Answer 1

Answer:

x = -1/5 = -0.5

Step-by-step explanation:

9(x + 5)2 = 81

Answer 2

Answer:

x = 19

Step-by-step explanation:

9x + 45 x 2 = 81

9x + 90 = 81

      +90   + 90

9x = 171

9       9

x = 19


Related Questions

Simplify. 32 + 1 x 2 (1).8 (2).20 (3).14 (4).11​

Answers

Answer:

31.11

Step-by-step explanation:

simplify the expression

I need help with this

Answers

Answer:

C

Step-by-step explanation:

You have to distribute the negative into the second set of parentheses first, and since 2x is positive, it will be negative, -3 is negative so it will be positive, and 18 is positive so it will be negative

Write an equation in slope intercept form of the line that passes through (-2,10) and (1,1).

Answers

Answer:

Step-by-step explanation:

1st use the two points to find the slope of the line that passes thru those two points

m = y2 - y1 / x2  - x1    

where point1 = ( x1, y1 )  and point2 = (x2, y2 )

your are given P1 = ( -2,10)  and P2 = (1,1)

find the slope

m = 1-(-2) / 1-10

m = 1+2 / -9

m = 3 / -9

m = - 1/3

then use the point-slope formula [y-y1 = m(x-x1)] with either of the two points, I'll use P2 b/c it seems easier (1,1) , you get the same results with either point and work the problem to the slope-intercept form [y = mx +b ]

y -y1 = m(x-x1)

y-1 = -1/3(x-1)

y-1 = -1/3x + 1/3

y = -1/3x + 1/3 + 1

y = -1/3x + 4/3

:)   got it ?


Which expression is equivalent to 1/3y?

1. 1/3 (y + 12) - 12

2. 1/6y+ 1/3 (y+3)

3.1/6y+ 1/6(y+12)-2

4. 1/3y +1/3(6-y)

Please hurry I’m in a meet :,(

Answers

Step-by-step explanation:

1/6y+ 1/6(y+12)-2

hope it helps !

What is 3 [2^3+ (4-2)^3 - (6-2)^2] simplified

Answers

Answer:

Step-by-step explanation:

.. 3 + 2[4(2) – (4 + 3(2))]. 3 + 2[8 – (4 + 6)]. 3 + 2[8 – (10)]. 3 + 2[–2]. 3 – 4. –1 ... 2x + 6 = 4 – 2 + 1x. 2x + 6 = 2 + x. 2x – x + 6 = 2 + x – x. x + 6 = 2. x + 6 – 6 = 2 – 6. x = –4.

Andrew has $800 saved in his bank account, and he adds $50/month from his
allowance.

Answers

Answer:

So if you want an equation its

800+50x=?

So x could be the amount of months

please help! everything is in the ss below

Answers

Answer: A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

c - 12 > -16

  + 12   + 12

c > -4

Does anyone know the answer for this?​

Answers

Answer:

Up 2, right 5

Step-by-step explanation:

The price of a laptop changed from $350.00 to $550.00. What is the percent change in the cost of the laptop? 200% increase 200% decrease 57.14% increase 57.14% decrease

Answers

Answer:

57.14% increase

Step-by-step explanation:

$350÷$200(amount of increase) = 0.5714

0.5714×100= 57.14%

CAN SOMEONE PLEASE HELP ME SOLVE THIS

Answers

There is No solution to that problem so it’s b :)
The answer should be B because when you solve the problem you get
5x-15 = 5x+15 and those aren’t equal so that crosses out C and D and it can’t be an infinite number is solutions if they aren’t equal

please answer?!!!?!?

Answers

If you’re solving for k/evaluating:
K=3,-5
If you need another answer or solving a different way lmk!(:

Kathy is going to buy a book at the bookstore for $9.45. The tax rate is 10%. What is the total cost Kathy would have to pay?​

Answers

9.45 * 0.10 = 0.945
9.45 + 0.945 = $10.395
Solution: around $10.40
$10.40 is the answer

A dog kennel board dogs for $8 a day. The kennel will also groom a dog for $12. Write an equation that gives the total cost of lodging a dog and having it groomed once before it comes home.

Answers

Answer: $8.00+$12.00=$20.00

2x+y=17 in slope intercept form

Answers

Answer:

y=-2x+17

Step-by-step explanation:

So the problem is 2x+y=17, we know that slope intercept form is y=mx+b where m is the slope and b is the y-int.

All you have to do is isolate the y.

2x+y=17

-2x on both sides so you can leave the y alone.

y=-2x+17 should be the answer. Hope this helps!

On that day the bakery gave away a total of 29 free gingerbread man cookies what was the total number of free candy canes the bakery gave away on that day show how or explore how you got your answer

Answers

Answer: 19 people

Step-by-step explanation:

If every 4th customer received a free gingerbread man cookie and 29 cookies were given away then the number of customers that came were:

= 4 * 29

= 116 customers

Because 116 customers came, they were able to give 29 cookies by giving one to every 4th customer.

If there were 116 customers, the number of customers who got the free candy canes would be:

= 116/6

= 19.3

= 19 people

Find the product of 5,604 and 81

Answers

A453, 924

Step-by-step explanation:

Answer:

5,604•81= 453,924

Step-by-step explanation:

If f(x) = 5 + 4(x - 4)?,
what is f(7)?

Answers

Answer:

Let's solve for f.

x=5+4(x−4)f(7)

Step 1: Flip the equation.

28fx−112f+5=x

Step 2: Add -5 to both sides.

28fx−112f+5+−5=x+−5

28fx−112f=x−5

Step 3: Factor out variable f.

f(28x−112)=x−5

Step 4: Divide both sides by 28x-112.

f(28x−112)28x−112=x−528x−112

f=x−528x−112

Answer:

f=x−528x−112

Which property is illustrated by the following?

a + 4 = a + 4

Answers

Answer: communitive

Step-by-step explanation:

The opposite sides have the same equations

Answer:

4

Step-by-step explanation:

Which expression is equivalent to √147

Answers

12 is sq root of 144
Hope that helps

Find the value of x.
A. 5 root 2/2
B. 5
C. 10
D. 10 root l2

Answers

I’m not for sure but I think it’s D good luck tho

Franz used 1/12
of his new shelf space for novels and 1/3
for textbooks.

i) What fraction of his shelf space did he use?
ii) What fraction of shelf space is left for his other books?

Answers

i) 1/12+1/3= 5/12
ii) 7/12

Answer:

1/12+1/3=5/12

1-5/12=7/12

Step-by-step explanation:

add fractions used

remaining space ,subtract used fraction from the total

What is the slope indicated in the table below?

(x) 5, 10, 15, 20

(y) 7, 14, 21, 28

PLS EXPLAIN

Answers

Answer:

it goes up (x) goes by 5 and (y) by 7

Step-by-step explanation:

Which of the following could be the measure of a pair of consecutive angles in a parallelogram?

Select the best answer from the choices provided.
A.
120° and 80°
B.
140° and 40°
C.
30° and 60°
D.
156° and 34°

Answers

Answer:b

Step-by-step explanation:it equals out to 180°

Can someone answer these two questions I submitted a photo of them it’s worth 50 points

Answers

Answer:

Step-by-step explanation:

1). Let the equation of the line is,

  y = mx + b

  Here, m = slope of the line

  b = y-intercept

  Slope of a line passing through two points,

  m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

  We take two points from the table given (-3, -19) and (0, -1)

  m = [tex]\frac{-19+1}{-3-0}[/tex]

  m = 6

  y - intercept 'b' = -1 [For x = 0]

  Therefore, equation of the line will be,

  y = 6x - 1

2). Equation of a line passing through a point (x', y') is,

   y - y' = m(x - x')

   Slope of the line passing through two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is,

   m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

   We take two points from the given table as (2, 12) and (3, 18).

   Slope of the line passing through these points will be

   m = [tex]\frac{18-12}{3-2}[/tex] = 6

   Equation of the line passing through (2, 12) will be,

   y - 12 = 6(x - 2)

   y = 6x - 12 + 12

   y = 6x

By using a graphing tool we can graph these lines representing the tables.    

x^6+3x^3-5
write the expression in quadratic form

Answers

Step-by-step explanation:

[tex]v = {x}^{3} \\ {v}^{2} + 3v - 5 = 0 \\ [/tex]

Solving this equation using the quadratic formula, we get two real solutions :

1.1926 or -4.1926

Now we know the values of v , we can calculate x since x is ∛ v

[tex] {x}^{6} + 3 {x}^{3} - 5 = 0[/tex]

[tex]x = \sqrt[3]{1.1926} = 1.0605 \\ x = \sqrt[3]{ - 4.1926} = - 1.6125[/tex]

Which graph shows that Cindy reads 3/4 of the time while riding in the car

Answers

Answer:

to solve this we would need to see the graphs

Step-by-step explanation:

however whichever one has 4 parts and 3 of them would be the time she spends reading.

anyone know this answer?

Answers

Answer:

The answer is invalid . R Is not remotley equilvent to T. If you try rooting it you will get runied

Step-by-step explanation:

A cell phone normally sells for $500, but it is marked down 30% and you have a coupon for an additional 15% off. How much would it cost you to purchase the cell phone?

Answers

Answer:

$275

Step-by-step explanation:

30% + 15%=45%

45% of 500 is 225, because 500 x 0.45=225. Then subtract the discount from the total, 500 - 225, and you get 275

What is the value of the exponential expression5^0

Answers

The value is 1, any number multiplied by 0 is 1

Solve for m. 4 = 20m Simplify your answer as much as possible.

Answers

Answer:

0.2

Step-by-step explanation:

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