1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ilya [14]
3 years ago
13

Whats the answer to -x² +6x + 18 = 0

Mathematics
2 answers:
Aneli [31]3 years ago
5 0

Answer:

8.2

Step-by-step explanation:

emmainna [20.7K]3 years ago
3 0

Answer:

Step-by-step explanation:

Step-1 : Multiply the coefficient of the first term by the constant   1 • -6 = -6  

Step-2 : Find two factors of  -6  whose sum equals the coefficient of the middle term, which is   2 .

You might be interested in
the length of one leg of a right triangle is 6 feet. the length of the hypotenuse is 2 ft longer than the other leg. Find the le
Minchanka [31]

Answer:

The missing leg is 8 feet and the hypotenuse is 10 feet.

Step-by-step explanation:

Use the Pythagorean theorem which is A²+B²=C².

So we know the first side is 6 so plug that into the equation which would now be 6²+B²=C².

Because the hypotenuse is 2 feet longer than the missing leg we can plug in C=B+2 which would now make it 6²+B²=(B+2)².

Now we solve what we have so far which would now make the equation 36+B²=B²+4B+ 4.

Now we can figure out that 4B=32.

Now isolate the variable, B, by divide both side of 4B=32 by 4.

This gives us B=8.

So the other side is 8 feet.

Since we know that the hypotenuse is 2 feet longer than the leg we just add 2 feet to the original 8 feet to find the hypotenuse to be 10 feet.

5 0
3 years ago
Work out the value of 2x2 x-1=2
Otrada [13]

Answer:

rong answer is 18

I think the right answer is 0.75

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Need answer asap!!!!!<br><br> how would i solve this?
lesya [120]

The height of the building to the nearest tenth of a meter is; 13 m

<h3>How to make use of Cosine Rule?</h3>

The slant line from the top of Trevor's head to the base of the building is gotten from Pythagoras theorem;

15/x = sin 36°

x = 15/sin 36

x = 25.52 m

Angle between that slant line and base of building is;

90 - tan⁻¹(1.5/14) = θ

θ = 83.88°

Remaining angle of the bigger triangle is;

180 - (36 + 83.88) = 60.12°

Thus, if the height of the building is h, then;

h/sin 36 = 25.52/sin 60.12

h = 13 m

Read more about Cosine Rule at; brainly.com/question/4372174

#SPJ1

5 0
2 years ago
Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
Musya8 [376]

Formula for the perimeter of a quarter circle: C = ((pi x 2r) / 4) + 2r

C = ((3.14 + 12) / 4) + 12

C = 3.785 + 12

C = 15.79 meters

Hope this helps! :)

4 0
3 years ago
The quotient of a number and nine is less or equal to fifteen
dimulka [17.4K]

Remark

If you just want the way this would be written out the answer is

\dfrac{x}{9} \leq 15

Note

1. The quotient is the answer of a division problem.

2. The number is represented by the letter x

5 0
3 years ago
Other questions:
  • Which of the following improper fractions is equivalent to the mixed number 4 2\3 ?
    6·2 answers
  • What additional information is needed to prove triangle LMN is congruent to triangle KMN using the HL theorem?
    7·2 answers
  • How do you say 0.3 in words
    7·2 answers
  • Is this expression a perfect square trinomial?
    12·1 answer
  • Rewrite the radical expression as an expression with rational exponents four square root X to the fifth
    9·2 answers
  • A gym charges $8.75 for each swimming class and a one-time registration fee of $12.50. A student paid a total of $56.25. How man
    9·1 answer
  • Help (easy points)<br><br><br> Just give me the answer to this
    12·2 answers
  • At Stop and Shop this week, grapes the price of grapes is 2.5 pounds (lbs) for $6.70. 1 How many pounds of grapes can you buy fo
    8·2 answers
  • Given the triangle shown below, find the length of [BC]​
    13·1 answer
  • HELP PLEASE I NEED IT!!!!!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!