PLS HELP! WILL GIVE BRAINLIEST! 70 PTS! pls only answer if you know
Completing the Square
Solve the equation by completing the square. Show your work.
x2 – 30x = –125
Step 1: Add to both sides of the equation. (2 points)







Step 2: Factor the left side of the equation. Show your work. (2 points)
Hint: It is a perfect square trinomial.









Step 3: Take the square root of both sides of the equation from Step 2. (1 point)







Step 4: Simplify the radical and solve for x. Show your work. (1 point)

Answers

Answer 1

Answer:

25, 5

Step-by-step explanation:

Answer 2
x^2-30x=-125
x^2-30x+225=-125+225
x^2-30x+225=100
(x-15)^2=100
First answer:
x-15=+10
x=25
Second answer:
x-15=-10
x=5

Related Questions

I need the answer ASAP

Answers

Answer:

[tex]p\leq 56[/tex]

Step-by-step explanation:

Plz mark brainliest!

solve for X
3x - 6 = 30

Answers

Answer:

The answer is x=12

Step-by-step explanation:

3x - 6 = 30

3x-6+6=30+6

3x=36

To find x divide both sides by 3.

3x/3=36/3

x=12

Felicia drew a triangle with side lengths that measured 15
cm, 18 cm and 27 cm. To determine if Felicia drew a right
triangle, she can use the equation:
O A. 15+18= 27
O B. 152 + 272 = 182
O C. 15 + 18 = 27
O D. 182 + 152 = 272

Answers

Answer:

A

Step-by-step explanation:

A club has 800 members.
100 of the members were randomly picked and were asked if the dues should be raised.
6 of the members said that dues should be raised.
Based on these results, about how many members in the club would be expected to say that dues should be raised? HELP

Answers

Answer:

48

Step-by-step explanation:

800/100=8.

6/100 said yes. so 6*8 which is 48.

Hope this helps plz hit the crown :D

4 x + 6 < − 6 Help me please

Answers

Answer:

x<-3

Step-by-step explanation:

Let's do this step by step:

1) isolate 4x : 4x<-6-6

2) so then we get : 4x<-12

3) isolate x :  x< -12/4

WHICH GETS YOU TO: x<-3

Answer:

4x + 6 < -6 = x < −3

The value of x = -2 or greater

8 - 2x + 4 + 8x – 21

Answers

Answer: 6x -9

Step-by-step explanation:

Answer:

6x - 9

Step-by-step explanation:

8 - 2x + 4 + 8x - 21

combine like terms

6x - 9

A holiday costs £1900. Work out the
price after a 9% discount.

Answers

Answer:

$1729

Step-by-step explanation:

[tex]\frac{100-9}{100} * 1900[/tex]

Answer:

1729

Step-by-step explanation:

1900 divided by 100 is 19

1% equals 19

1 times 9 equals 9

19 times 9 equals 171

171 = 9%

171 - 1900 = 1729

price after a 9% discount is 1729

The model was shaded two different ways to show a product.

A fraction bar divided into 8 parts. 6 parts are shaded blue and 4 parts are shaded pink."it's a pitcher"
Which product is shown by the model?

1.One-half × One-eighth
2.One-half × One-fourth
3.One-half × Three-eighths
4.One-half × Three-fourths

Answers

Awnser: 4. 4/8 simplified=1/2 6/8 simplified=3/4.

Answer:

c

Step-by-step explanation:

i got irt right on the test

x² = 30² +21² -2(30)(21) Cos 123°

Answers

Answer:

x ≈ 44.69

Step-by-step explanation:

x² = 30² +21² -2(30)(21)Cos123°

x² = 900 + 411 - 1260cos123°

x² = 1311 - 1260cos123²

~Take square root of both sides

x = √1997.245184111

x ≈ 44.69

Best of Luck!

A block of cheese measuring 5 inches by 2 inches by 3 inches is coated in a very thin layer of wax. The cheese is sliced into 240 cubes with half-inch edges. How many cubes will not have any wax on them?

Answers

Answer:

64

Step-by-step explanation:

it's 64

I need 3 more questions

Answers

Answer:

The answer is 88%

Step-by-step explanation:

To find a percentage, just divide the top number by the bottom. 22 divided by 25 is 0.88 which means 22 out of 25 is 88%.

Another way to do it is to multiply both 22 and 25 by 4. The denominator will now equal 100 so now the top number will be the percentage. 22*4 is also 88.

Hope this helped.

Please help thank you so much

Answers

Answer:

No

Step-by-step explanation:

It would work for the bottom equation, but plugging in to the top equation would equal -4>3, which is false.

Answer:

no

when the point is plugged into the first inequality, it does not work therefore it is not a solution

Example 1: Marcus buys a varsity jacket from a clothing store in Arlington. The price of the jacket is $80 and the sales tax is 8%. What is the total cost of the jacket?

Answers

Answer:

$86.40

80 + 8%= 86.40

Answer:

$86.40..

Step-by-step explanation:

80 + 8%= 86.40

You bake cookies for a bake sale. The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5. You bake 15 oatmeal cookies. How many chocolate chip cookies do you bake?

Answers

Answer:

21

Step-by-step explanation:

[tex]\frac{7}{5}[/tex] = [tex]\frac{x}{15}[/tex]

x = 21 chocolate chip cookies.

There are 21 chocolate chip cookies do you bake.

What is mean by Ratio?

A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities.

Given that;

The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.

And,  You bake 15 oatmeal cookies.

Now,

Since, The ratio of chocolate chip cookies to oatmeal cookies is 7 : 5.

Hence, The amount of chocolate chips = 7x

And, The amount of oatmeal cookies = 5x

Here, You bake 15 oatmeal cookies.

Hence, We get;

The amount of oatmeal cookies = 5x = 15

So, we get;

⇒ 5x = 15

⇒ x = 3

So, The amount of chocolate chips = 7x

                                                      = 7 × 3

                                                      = 21

Thus, There are 21 chocolate chip cookies do you bake.

Learn more about the ratio visit:

https://brainly.com/question/12024093

#SPJ2

2. Are the two expressions
equivalent when x= 5?
9(4x + 2)
36x + 18
Circle one:
Yes
No
Work Space

Answers

Answer:

Hi, I'm new can I get marked as brainlieser? It would be highly appreciated.

Hope my answer helps :)

lets get into answering your question.

Step-by-step explanation:

first sub x into the equation (x=5) [it is already given]

9 ( 4*5 + 2) 36*5 + 18

= 9 (20+2) 180+18

= 9(22) + 198

198+198

= 369

369 makes a circle So YES

it is a circle.

Is 45/7 a rational number

Answers

Answer:

yes

Step-by-step explanation:

it comes to an end im so sorry if this is wrong

Answer:

It is irrational, if its not a perfect square. Since 45 is not a perfect square, it is an irrational.

Step-by-step explanation:

A line passes through point (-10, – 4) and has a slope of -3/2

Write an equation in Ax+By=C form for this line.
Use integers for A, B, and C.

Answers

9514 1404 393

Answer:

  3x +2y = -38

Step-by-step explanation:

When a point and the slope are given for a line, the point-slope form of the equation is useful.

  y -k = m(x -h) . . . . . . line with slope m through point (h, k)

  y -(-4) = -3/2(x -(-10))

  y + 4 = -3/2x -15

Multiplying by 2 gives ...

  2y +8 = -3x -30

Adding 3x-8, we get ...

  3x +2y = -38

Answer:

3x + 2y = -38

Just plug in the x and y values to get the answer!

We already know that when x is -10 y = -4 so all we have to do is substitute them.

y = mx + b

-4 = -3/2(-10) + b

-4 = 30/2 + b

-4 = 15 + b

-19 = b

The premium membership at a health club is $40 per month. This is
$15 more than the cost of a standard membership. What is the cost of a standard
membership? Do not type the $ in your answer.
Quick I need help!!!!! Plzzz help meeeee!!??!!!??!?

Answers

Answer: 25

Step-by-step explanation:

Which can be used to expand the expression below?
5 (3 x minus StartFraction 6 over 7 EndFraction)
associative property
commutative property
distributive property
subtracting

Answers

Distributive propert

Answer:

the 3ed one distributive property

Step-by-step explanation:

Find the greatest and least values of arg z if (z +2i = 1)​

Answers

Answer:

1 is least 2 is greatest

Step-by-step explanation:

which equation is equivalent to 3/2x -4y+1=0

Answers

Answer:

the fourth option

Step-by-step explanation:

i googled it

Answer:the 2nd to the very bottom one

Step-by-step explanation:

Don’t wanna tell



i need help with 4, 5, and 6

Answers

Answer:

To find the slope you do rise/run and the slope for 4 is 6/5 the slope for 5 is ZERO slope or 0/5 I know because it goes 0 times up and 5 times to the right.  And for 6 is UNDEFINED slope or 6/0 because it goes 6 times up and 0 time to the sides

Step-by-step explanation:

Answer:

4. 6/5 5.zero 6. undefined

Step-by-step explanation:

so you do y1-y2/x1-x2

4-(-2)/2-(-3)

6/5

5. because it doesn't go up or down

6. because the x doesn't change

what is the solution to 2/3a - 1/6 = 1/3

Answers

The solution would be: a = 3/4

Answer:

Step-by-step explanation:

a=3/4

Tell me 3 points that would be on the graph of y = 2x + 3

Answers

Answer:

-1.5,0, 0,3 and -4,-5

Step-by-step explanation:

That is form of y= mx+b so you have one point is (0,3) and other can be this (1,5) (2,7)

Maria ha acquistato un libro, scontato del 15%, al prezzo di 34 euro. Dopo avere letto 1/4 delle pagine del libro. Legge 2/3 delle pagine rimanenti e a questo punto le restano da leggere 104 pagine. Determina:

Il prezzo del libro prima dello sconto
Il numero di pagine complessive del libro
La percentuale che rappresenta il numero di pagine che restano da leggere a Maria rispetto al numero di pagine complessivo.

Answers

Answer:

a) 40 euros

b) 416 pages

c) 25%

Step-by-step explanation:

This question can be translated to:

Maria bought a book, discounted by 15%, at the price of 34 euros. After reading 1/4 of the pages of the book. She reads 2/3 of the remaining pages and at this point, she has 104 pages left to read. Determine:

a)  The price of the book before the discount

b) The total number of pages in the book

c) The percentage that represents the number of pages that Maria has left to read out of the total number of pages.

I will answer in English.

a) If P is the price of the book, with a discount of the 15% the price will be:

P' = P - P*(15%/100%) = P - P*0.15 = P*0.85

and P' = 34 eur

34 eur = P*0.85

34 eur/0.85 = 40 eur = P

The original price was 40 euros.

b) Now suppose that the book has N pages.

First, she reads 1/4 of the pages, then we have:

N - (1/4)*N =  (3/4)*N pages left.

Then she reads (2/3) of the remaining (3/4)*N pages.

Then there are:

(3/4)*N - (2/3)*(3/4)*N = (1/3)*(3/4)*N = (1/4)*N

And we know that at this point, there are 104 pages left, then:

104 = (1/4)*N

104*4 = N = 416

c) The total number of pages is 416, this is the 100%

there are 104 pages left in the book, this will represent X%, and we want to find the value of X.

then:

416 = 100%

104 = X%

Let's take the quotient of those two equations:

(416)/(104) = (100%/X%)

Now let's isolate X%.

X% = (104/416)*100% = 0.25*100% = 25%

To aid in sea navigation, Little Gull Island Lighthouse shines a light from a height of 91 feet above sea level with an unknown angle of depression. If the beam of light shines on the sea surface at a point that is 865 feet away from the base of the lighthouse, what is the angle of depression?

Answers

Answer:

[tex]\approx 6^\circ[/tex]

Step-by-step explanation:

Given that:

Little Gull Island Lighthouse shines a light from a height of 91 feet above the sea level.

The angle of depression is unknown.

Distance of the point at sea surface from the base of lighthouse is 865 ft.

This situation can be modeled or can be represented as the figure attached in  the answer area.

The situation can be represented by a right angled [tex]\triangle ABC[/tex] in which we are given the base and the height of the triangle.

And we have to find the value of [tex]\angle BAD \ or \ \angle C[/tex] (Because they are the internal vertically opposite angles).

Using tangent ratio:

[tex]tan\theta = \dfrac{Perpendicular}{Base}[/tex]

[tex]tanC = \dfrac{AC}{BC}\\\Rightarrow tanC = \dfrac{91}{865}\\\Rightarrow tanC = 0.105\\\Rightarrow \angle C \approx 6^\circ[/tex]

Therefore, the angle of depression is: [tex]\approx 6^\circ[/tex]

A flagpole at a right angle to the horizontal is located on a slope that makes an angle of \large 10^\circ with the horizontal. The flagpole casts a 30-meter shadow down the slope. The angle of elevation from the tip of the shadow to the sun is \large 25^\circ. What is the length of the flagpole to the nearest tenth of a meter?

Answers

Answer:

13.1 m

Step-by-step explanation:

From the diagram attached :

Using Sine rule :

a / sin A = b/Sin B = c / sin C

h / sin 25 = 30 / sin 75

Cross multiply :

h * sin 75 = 30 * sin 25

0.9659258 * h = 30 * 0.4226182

h = 12.678547 / 0.9659258

h = 13.125798

Length of flagpole h = 13.1 m

Answer:15.5

Step-by-step explanation:

The next two terms of the sequence 4, 7, 10, 13 are *

Answers

Answer:

4, 7, 10, 13, 16, 19

Step-by-step explanation:

The sequence is going up by 3 simply keep adding 3.

Someone answer asap please

Answers

Answer:

Yes

Step-by-step explanation:

Answer:

no

Step-by-step explanation: it crosses the x axis two times

are -1/2 and 2 perpendicular

Answers

Answer:

Well, if -1/2 and 2 are slopes of 2 lines, then yes, they are perpendicular.

Step-by-step explanation:

The slope of a perpendicular line is the opposite reciprocal of another line.

Normal line's slope: x

Perpendicular line's slope: -1/x

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