Solve the following equation by completing the square. x2-18x+78=0

Answers

Answer 1
The answer is 10.73 btw hope this helps

Related Questions

Mhanifa can you please help? I will mark brainliest!

Answers

Answer:

Property of kite used to solve this

Diagonals are perpendicularOne diagonal is an angle bisector (WY)

(20)

∠XYZ is double the ∠XYV∠XYV is complementary with ∠VXYm∠XYZ = 2(90° - 58°) = 64°

(21)

∠VZW is complementary with ∠VWZ and ∠VWZ is half of ∠ZWXm∠VZW = 90° - 50°/2 = 65°

(22)

∠ZWV is half of ∠ZWXm∠ZWV = 1/2*50° = 25°

(23)

m∠WZY = m∠VZW + m∠VZY = m∠VZW + m∠VXYm∠WZY = 65° + 58° = 123°

what is the solution

options:
a. (-2,-2)
b. (-1,-5)
c. (-5,-1)
d. (2,-1)

Answers

Answer: a. (-2, -2)

Step-by-step explanation:

The point at which the two lines intersects is at (-2, -2), which is the solution.

Find the area of the shaded region.

Answers

area of parallelogram = base x height
area of large parallelogram
8 x 12 = 96
area of small parallelogram
4 x 6 = 24
96 - 24 = 72
the area of the shaded region is 72 m^2

Help asap plssss......

Answers

Answer:

-3

Step-by-step explanation:

(-4)(6)/12

-24/12

= -2

it will be nice if I get brainiest

Can someone plz help

Answers

Answer:

x=43

Step-by-step explanation:

Answer:

x = 34°

Step-by-step explanation:

(x + 7) + (63° + (2x + 8) = 180°

combine like terms:

3x + 78° = 180°

subtract 78 from each side of the equation:

3x = 102°

divide both sides by 3:

x = 34°

Find the area of the parallelogram below. Round your answer to the nearest tenth.

Answers

Answer:

198 cm ²

Step-by-step explanation:

Area of parallelogram = l * w

18 * 11= 198 cm²

can you please help me with this ASAP!!

Answers

firstly u can take the value of x=3 then put the value of x in equation..then u will get y = 0 so from this equation u get this(3,0)

then do same thing take value x = 6 and then u will get the value of y = -1 therefore u will get (6,-1)

Now plot these two points (3,0) and (6,-1) on graph..

Hope it helps u..!!

If f(x)= 9x^2+2x-3, find f(-1).

Answers

Answer:

f(-1)= 4

Step-by-step explanation:

Just plug -1 into all Xs

and split it into 2 seperate problems for the time being

[9 times (-1)^2] + [2(-1)-3]

-1 squared is positive 1  times the 9 is just 9

Plus  2 times -1 is -2 minus 3 is -5

combine the two seperate problems you have

9-5 the subtract and

f(-1)= 4

Carl bought a stock for $56. He sold it a week later after its value had dropped below $30. How would you describe the size of Carl's loss

Answers

Answer:

greater than $ 26

Step-by-step explanation:

Price at which the share was bought = $56

The selling price of stock is below $30.

Therefore, the loss of carl would be greater than $56- $ 30 = $26

So, the size of loss of Carl any amount greater than $ 26.

Maggie is buying party favors for her birthday party. She has $5.00 to spend. She can buy pencils for $0.50 each, rubber balls for $1.00 each, and yo-yos for $1.50 each. How many different combinations of these party favors can she buy with $5.00?

25pt

Answers

Maggie can buy 10 pencils, 5 rubber balls, and 3 yo-yos.

You just divide 5.00 but the price of each item to see how much you can buy without spending too much.

Which expression is equivalent to 6/7 divided by 3/5 ?

A. 6/7 x 5/3

B 6/7 x 5/3

C 7/6 divided 3/5

D 5/3 divided 6/7​

Answers

Answer:

A.

Step-by-step explanation:

6/7  / 3/5   we invert the divisor and multiply:

= 6/7 * 5/3

What shape is figure b?

Figure A is a cone and figure B is a cylinder.
cylinder
sphere
cone
pyramid

Answers

Answer:

Cylinder

Step-by-step explanation:

Figure b is cylinder.

Answer:

sphere

Step-by-step explanation:

Can you please help me

Answers

Answer:

there is the answer. ❤ hope it helps

HELP ASAP PLEASE!
Write a rule for the sequence.
4, 8, 16, 32, ...

Start with 4, and multiply by 2 repeatedly.
Start with 4, and add 8 repeatedly.
Start with 4, and add 2 repeatedly.
Start with 2, and multiply by 4 repeatedly.

Answers

start with 4 and multiply by 2 repeatedly

can someone help me. its hard

Answers

Answer:

complementary angles

Step-by-step explanation:

We know that complementary angles add up to 90 degrees which is andgles a and b.

By the way, can you follow me on Brainly?

Thanks!

Answer:

B. Complementary angles

Step-by-step explanation:

angle a + angle b = 90 degrees

the two angles form a right angle

two angles that add up to 90 degrees are called complementary angles

The value of Tonya's car is $21,000. The car's value depreciates at a rate of 15% per year.

Which function represents the value of the car after t years?

O f(t) = 1.15(21,000)

O f(t) = 21,000(1.15)

O f(t)21,000(0.85)

O f(t) = 0.85(21,000)

Answers

Answer:

f(t) = 0.85(21,000)

Step-by-step explanation:

100% - 15% = 85% 0r in decimal form 0.85

0.85 x the original pricen 21,000

Answer:

the answer for this question is: f(t)=21,000(0.85)^t

Step-by-step explanation:

well since its asking what function represents the value, you have to convert the 15 percent into a decimal. so when you put the equation together you can see its 0.85.

hope it helps! :)

log(x+4)=logX + log4

Answers

Answer:

log

(

x

+

4

)

=

log

(

x

)

+

log

(

4

)

=

log

(

4

x

)

, so  

x

+

4

=

4

x

, hence  

x

=

4

3

Step-by-step explanation:

For which of the inequalities below is v = 4 a solution?
A v + 5 ≥ 9 B v + 5 ≤ 8
C v + 5 < 8 D v + 5 > 9

Answers

Step-by-step explanation:

You can use this app is call symbols and it's completely free.

Hope this helps

Find the total surface area of this cone.
Leave your answer in terms of .
15 cm
78 cm
SA = [ ? 17 cm?

Answers

Answer:

SA = 200π cm²

Step-by-step explanation:

The slant height l is the hypotenuse of the right triangle inside the cone

The triangle is an 8- 15- 17 ( Pythagorean triple ) with l = 17

Then

SA = πrl + πr²

     =(π × 8 × 17) + (π × 8²)

     = 136π + 64π

     = 200π cm²

Answer:

in the right angle triangle,

p=15cm

b=8cm

[tex]h = \sqrt{15 {}^{2} + 8 {}^{2} } \\ = \sqrt{125 + 64} \\ = \sqrt{289} \\ = 17cm \\ sa = \pi \: rl + b \\ = \pi \: 8 \times 17 + \pi \: r {}^{2} \\ = 136\pi + 64\pi \\ = 200\pi[/tex]

the distance from the center of a square to a side is 4 yd. find the perimeter of the square

Answers

4th grade math HAHAHAHAHHAAA your too young for brainly ima report you  ✋✋✋


A $60 shirt is on sale for 30% off. How much is the shirt's sale price?

Answers

Answer:39?

Step-by-step explanation:

AT HOME / STUDENTS
1. What are the two equations you created?
id to find 2. How did you put the equations into y=mx+b form?
3. Using your calculator, explain the steps that you did to find
the intersection point.
4. What is the answer?

Answers

Yeah I’m going home to get my hair

Please help, not hard Im just confused

Answers

Answer:

1

Step-by-step explanation:

Which of these expressions is equivalent to −2(x−5) ?

Multiple choice question.

A)
−2x−5


B)
−2x+5


C)
−2x+10


D)
−2x−10
Plzs Help I give someone a brainliest

Answers

Answer:

C.

Step-by-step explanation:

-2(x - 5)

= -2*x - 2*-5

= -2x + 10.

Can someone please help me with this question
Please check this answer
Please tell me if it’s correct if it’s not please answer it correctly please

Answers

Step-by-step explanation:

Hey,

I'm sorry, this is not correct. For a reflection, all you have to do is count the number of points from that specific point to the line. So, for example, w is 6 units away from the line, in order to draw that, count 6 units and graph. It's pretty hard to explain, but remember the shape is being reflected, so the orientation must change. I suggest searching this up.

Let me know if you have any more questions and I'll be more than glad to help.

- Lena :)

what is the vertex of the graph?



A. (2,2)

B. (1,3)

C. (3,1)

D. (0,2)

Answers

Answer: B

Step-by-step explanation:

Multiply the polynomials. (2x2 + 6x + 6)(3x - 2)​

Answers

22 because 2x2=4+6=10+6=16 3x2=6 witch means u add 16+6 and that is 22

Will yall help me please help me i will help ya´ll whenever ya´ll need points just ask something or i will make things where i will get ya´ll some points just will help me on this quiestion..?

Answers

It’s 5 because we put the numbers in order

You are the owner of the biggest and newest roller coaster called the Gentle Giant. The roller coaster costs $6 to ride. The operator of the ride must pay $200 per day for the ride rental and $65 per day for a safety inspection. If you want to make a profit of at least $1,000 each day, what is the minimum number of people that must ride the roller coaster? Write an inequality that can be used to find the minimum number of people, , which must ride the roller coaster each day to make the daily profit.

Answers

Answer:

Inequality: 6r - 200 - 65 [tex]\geq[/tex] 1000  and minimum of 211 people

Step-by-step explanation:

Let r = rides

6r - 200 - 65 [tex]\geq[/tex] 1000

6r - 265 [tex]\geq[/tex] 1000

6r [tex]\geq[/tex] 1265

r [tex]\geq[/tex] 210 [tex]\frac{5}{6}[/tex]

Needs 211 people to make a profit of at least $1000

THIS IS MY LAST ONE PLEASE HELP

Answers

Answer:

x=56

Step-by-step explanation:

okay so

x=180- (64+60)

x= 180-124

x= 56

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