PLS WILL MARK BRAINLIEST

Solve the equation for all values of x by completing the square.
x^2 + 6x – 27 = 0

Answers

Answer 1

Answer:

Solution

=3

=−9

x=3

x=−9

x=3x=−9

Step-by-step explanation:

Boom

Answer 2

Answer:

x=-9 and 3

Step-by-step explanation:

FOIL method

x^2+6x-27=0

Find the common numbers that multiply to 27 that will also equal 6.

(27x6) or (9x3)

the 6 is positive while 27 is negative so you need to use a + and - in the parenthesis.

then FOIL them

(x+9)(x-3)

FIRST:  x*x=x^2

OUTSIDE: x*-3=-3x

INNER: 9*x=9x

LAST: +9*-3=-27

x^2(-3x9x)-27

x^2+6x-27

now that the equation matches you solve for x.

(x+9)=0  x=-9

(x-3)=0   x=3


Related Questions

Select the right answer.

Answers

Answer:

C

Step-by-step explanation:

Evaluate 6 m plus 1 for m equals negative 2. NO LINKS

Answers

Answer:

-11

Step-by-step explanation:

first substitute m for -2. now the equation is 6(-2)+1. next multiply 6 by -2 and you get -12. now add 1 to -12 and you get -11

6 (-2) + 1= -11 would be the answer

help me quickly please!!
if
AC= 143
BC= 8x+4
AB= 7x+4
find BC.

Answers

Answer:

BC is 12x. An addition problem.

Step-by-step explanation:

Let me know if I am wrong.

Answer:

AC

Step-by-step explanation:

A package of 25 wristbands costs $15.75. What is the cost of 3 wristbands in dollars and cents?

Answers

Answer:

1.89

Step-by-step explanation:

find cost of 1 wristband first

15.75/25 = 0.63 (cost of 1 wristband)

0.63*3 = 1.89

Im dollars it would be $1.89 and in cents it would be $0.63

A cone has a volume of 3pi. If the cone's radius is r, what is its height?

The volume of this cylinder is 175pi cubic units.
What is the volume of a cone that has the same base area and the same height?

Answers

Answer:The height of each is 5 cm, and the radius is 2 cm

Step-by-step explanation:

Name the Solid.
What is the VOLUME of the solid?
Most Precise Answer =
Round to the nearest hundredth.
Approximate Answer =
Round to the nearest tenth if necessary.

Answers

Answer:

41,223.98

Step-by-step explanation:

Find the volume of the full sphere, then divide by 2 to get 1/2 of a sphere.

The answer for the full sphere is 82447.96 but divide by 2 and get 41,223.98.

Hemisphere
Volume precise is 13122 pi or 41223.98
And then to the nearest tenth its 41224.0

Translate the word phrase into a math expression.

1 less than a number.


A. n + 1

B. n−1

C. 1−n

D. 15 ÷ n

Answers

B is the answer because we don’t know what it is so n less than 1

I suck with this too so can some help me?

Answers

Finishing off the sentences below in the pic:

The area of each circle is exactly 2.25 pi square inches.

(As the area of a circle is: Area = pi x radius^2).
Therefore the area is: 1.5^2 x pi
Area: 2.25pi


There are TWO identical circles in the cylinder.

(Think of a cylinder and recall that a cylinder has a circle on the top and bottom of the 3-D shape, therefore a cylinder has two identical circles)


So the total area of all the circles is 4.5pi square inches.

(Adding the area of the two identical circles together, where 2.25pi + 2.25pi = 4.5pi)

Answer:

...

Step-by-step explanation:

If , what is the value of the expression ?
A.

B.

C.

D.

E.

Answers

Answer:

im pretty sure its 6

Answer: below

B: 6!

Step-by-step explanation:

Substitute the 8 for d evaluate:

4 + 2 = 4 + 8/2 = 4 + 4= 8

Answer:

[tex]\frac{4+d}{2} = \frac{4+8}{2} = \frac{12}{2} = 6[/tex]  

:)

The camp has an elevation of 2700m. It is 1500m east of the origin. What are the camp's x and y coordinates?

Please help!! will give brainliest. Will be helpful

Answers

(1500,2700) hope this helps

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Answers

Answer:

Equation: I believe its y=5/3x-13

Step-by-step explanation:

In the "y=5/3x+9" equation, 5/3 is the slope. You then take the slope (5/3) and the points (9,2) and add it to the equation "y+y1=m(x-x1)":

y-y1=m(x-x1)

distribute 5/3: y-2=5/3(x-9)

y-2=5/3x-45/3

y-2=5/3x-15

-add 2 on both sides-

y=5/3x-13

I might be wrong- but its worth a try ;-;

5(20 + ) = 100 + 95 im tryna watch anime but i gotta do another test

Answers

I think it would be 195 or it might be 195 or it might be 195 or it might be 195

Answer:

100=195

Step-by-step explanation:

Im sorry it sort of makes no sense since because of the +.

A community swimming pool is a rectangular prism that is 30 feet long, 12 feet wide, and 5 feet deep. The wading pool is half as long, half as deep, and the same width as the larger pool.

How many times greater is the volume of the swimming pool than the volume of the wading pool?

Enter your answer as a number, like this: 42
HELLLLPPPP PLEASEEEE

Answers

Answer:

The number of times greater than the swimming pool to the wading pool is 1/2. the wading pool is half as long as the swimming pool. the wading pool is 15 feet long, 12 feet wide, and 2.5 feet deep.

hope this helps!

HELPPPPPP ASAP PLSPLSPLSPLSPLSPLSPLSPLSPLS

As a tornado approaches, the air temperature changes −8.2°F every hour.

Which value represents the change in air temperature over 1.6 hours?


−5.125°F

−6.6°F

−9.8°F

−13.12°F

Answers

I believe the answer is -13.12

Explanation: I multiplied -8.2 by 1.6 to get -13.12
-13.12 correct me if i’m wrong anyone please

6 ft 2 in. = _____ ft

Answers

Answer:

6.2 ft

Step-by-step explanation:

Answer:Do a quick conversion: 1 feet = 30.48 centimetres using the online calculator for metric conversions. Check the chart for more details.

Step-by-step explanation:

Douglas went to Charlies General Store to get gas. He paid $52.20 for 20 gallons of gas. How much would he have paid if he got 25 gallons instead

Answers

$52.20/20= $2.61 , which equals how much he paid per gallon.

$2.61x25= $65.25 for 25 gallons of gas

Answer: $65.25
52.20 divided by 20 is 2.61. 25 multiplied by 2.61 is 65.25

2 more questions left please help with this fast!!! IXL question

Answers

The Answer is 4 ,6, 12, 20
Hopeeeee this helps

In which pair do both decimals represent rational numbers?

Answers

Answer:

A

Step-by-step explanation:

0.318 is a decimal that ends

0.3444... can be turned into the fraction 31/90.

Answer:

A

Step-by-step explanation:

Hi I’m back again and I need help with this question on my daily common core review sheet. Thanks a lot, answer this and you get 20 points, I will give lots of points on Christmas as a gift for people who need some thank you

Answers

Answer:

B

Step-by-step explanation:

That's the biggest number

Answer: B

Step-by-step explanation:

In this problem we know that the Acme Nails made 55,672 and the problem is asking who made more. Knowing this we now know we need to find a number higher then 55,672.

A is incorrect because it is less the 55,672 and same goes for C and D

B is correct because 55,674 is 2 more then 55,672

I hope this helps have a great day and merry Christmas :)

How do you solve 42 = 7/6x
Please help me and explain so I can do this on my own.

Answers

It really isn’t that hard

Answer:

I'm just trying to help so I don't know if it's correct

42 = 7/6x

you are going to multiply by 6x on both sides then you'll get and cancel the 6x on the right side of the problem

6x × 42 = 7

then you are going to divide by 42 on both sides and cancel the 42 on the left side of the equation, so you'll get 6x = 7/42

next simplify the equation

6x = 1/6

then you will try to get X by itself by dividing by 6 on both sides of the equation

so you'll get X = 1/6 ÷ 6

then you'll flip the second number and you'll get 1/6 then multiply so X will be equal to 1/36

hope you understand

help pleases
Evaluate the expression when b=8
3b²

Answers

here is your answer

3(8)²

3*64

192.......

The sum of two numbers is 45. The difference of the 2 numbers is 3. What is the product?

A:135
B:480
C:504
D:2,160

Answers

Answer:

x = 24, y = 21

Step-by-step explanation:

x + y = 45

x - y = 3

Add them together

2x = 48

x = 24

24 + y = 45

y = 21

Determine whether each figure creates the conditions to form a unique triangle, more than one triangle, or no triangle. Angle measures of 30 degrees, 60 degrees, and 90 degrees.

no triangle
a unique triangle
more than one triangle

Answers

It’s 60 degrees because it’s on triangle
It’s 69 degrees because it’s on a triangle

Simplify 10 divide 5 + 3 x 2.

Answers

Answer:

d 8

Step-by-step explanation:

Answer:

8 answer ..

i hope it will help you

A. Are the expressions 3(m−2) + 2(m−2) and 5(m−2) equivalent expressions?

B. In two or more complete sentences, justify your answer to A.

Answers

The answer is yes. If you solve both expressions it would be 5m-10.

Answer: yes, this is because when you solve the first equation then your answer will be 5(m-2). You do this by distributing 3 to m & 2 (multiply), then you will distribute 2 to m & 2 (also multiply).

Step-by-step explanation:

Triangle BCD With Vertices B(4,4), C(8, 14), And P(12, 0); K = 1/4

Answers

Answer:

Hello, I am not sure if you mean a dilation by 1/4. If it is, this will be the answer:

B (1, 1)

C (2, 3.5)

D (3, 0)

Step-by-step explanation:

Just divide each number by 4. B (4, 4) = B (4/4, 4/4) = B (1, 1)

Continue to do this for each coordinate set given.

Hope this helps!

The vertices of triangle B'C'D' are:

B'(-1, -1/2)

C'(0, 2)

D'(1, -3/2)

What is a triangle?

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

To find the vertices of triangle B'C'D', which is a dilation of triangle BCD with center at the origin and a scale factor of 1/4,

We can follow these steps:

Find the coordinates of the centroid of triangle BCD.

The coordinates of the centroid G are:

[tex]x_G = (x_B + x_C + x_D) / 3 = (4 + 8 + 12) / 3 = 8[/tex]

[tex]y_G = (y_B + y_C + y_D) / 3 = (4 + 14 + 0) / 3 = 6[/tex]

Translate triangle BCD so that its centroid is at the origin.

We can do this by subtracting the coordinates of the centroid from the coordinates of each vertex:

B(4, 4) → [tex]B_1(4 - 8, 4 - 6) = B_1(-4, -2)[/tex]

C(8, 14) → [tex]C_1(8 - 8, 14 - 6) = C_1(0, 8)[/tex]

D(12, 0) → [tex]D_1(12 - 8, 0 - 6) = D_1(4, -6)[/tex]

Dilate the translated triangle [tex]B_1C_1D_1[/tex] by a scale factor of 1/4.

To do this, we can multiply the coordinates of each vertex by 1/4:

[tex]B_1[/tex](-4, -2) → B'(-4 x 1/4, -2 x 1/4) = B'(-1, -1/2)

[tex]C_1[/tex](0, 8) → C'(0 x 1/4, 8 x 1/4) = C'(0, 2)

[tex]D_1[/tex](4, -6) → D'(4 x 1/4, -6 x 1/4) = D'(1, -3/2)

Therefore,

The vertices of triangle B'C'D' are:

B'(-1, -1/2)

C'(0, 2)

D'(1, -3/2)

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

I need help on this equation, it’s solutions to inequalities. I need explanation on why it’s that answer, plz, thx

Answers

Answer:

k=69

Step-by-step explanation:

(plug in 69 instead of k)

69/3 = 23.

23+1=24

The ≥ sign means 21 has to be GREATER or EQUAL to 17.

Is it?

24≥17?

YES!

So, it works out.

Hope this helps.

If you still don't get it, just ask again, I'll explain it in more detail.

I need help, thanks in advanced ...

Answers

He should buy 5 blue ones and 6 green ones, in total 11! Hoped I helped u!

Grant mows lawns for extra money. He mows 9 lawns in 9 hours on Wednesday and 6 lawns In 6 hours on Saturday.

What is the constant of proportionality that relates the total number of lawns mowed, y, to the number of hours mowing lawns, x?

Answers

It would be y=x or x=y as we can see that 9 lawns in 9 hrs equal 1 lawn in 1 hr. 6 lawns in 6 hrs equals to 1 lawn in 1 hr as well.

help me pweas

Jacob sells homemade skateboard decks for a profit of $27 per deck. He is considering switching to a new type of material that will increase his profit, as expressed by the function y = 32x, where x is the number sold and y is the amount of profit.

How many more dollars will Jacob earn on each skateboard deck if he switches to the new material? Explain how you found your answer. (5 points)

Answers

Answer: I think that it is 32

Step-by-step explanation: I think this because in your equation it says (y=32x) which 32 will mean how much he is charging for each skateboard, x will be how many he sells, and y would be how much he makes from selling them. So if he sold 2 skateboards you would do 32 x 2 which equals 64 soo that would be (64=32x2) so it is 32

Answer:

32 <3

Step-by-step explanation:

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