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
Aleonysh [2.5K]
3 years ago
5

I need help ASAP!!!!!!!

Mathematics
1 answer:
aleksandrvk [35]3 years ago
8 0

Answer:

  15.5 cm

Step-by-step explanation:

You want the difference between the values of x that make y=0. Solving for those values, we get ...

  0 = -0.1(x -1)^2 +6

  0 = (x -1)^2 -60 . . . . . . . . . multiply by -10

  60 = (x -1)^2 . . . . . . . . . . . add 60

  ±√60 = x -1 . . . . . . . . . . . . take the square root

At this point, it should be obvious that the difference between the two solutions will be 2√60 = 4√15. If it is not, we can find the two solutions and take their difference:

  x1 = 1 +√60

  x2 = 1 -√60

Then the difference is ...

  x1 -x2 = (1 +√60) -(1 -√60) = 2√60

60 has a square factor (4), so we can simplify this radical to ...

  x1 -x2 = 4√15 ≈ 15.4919 ≈ 15.5

The ends of the rainbow are about 15.5 cm apart.

You might be interested in
The sales price of an LCD TV is $280, representing 30% off the regular price. What is the original price?
musickatia [10]

Answer:

$400

Step-by-step explanation:

Let 'p' represent the original price, the 'p-0.3p' represents the sale price:

280 = p - 0.3p .

Solving for 'p' we have p=400.

The original price of the television was $400

4 0
3 years ago
Jasmine created a scale drawing of her room. She used a scale of 1 in:3 feet. The drawing is 8 inches long by 6 inches wide. Wha
sergiy2304 [10]

Answer:

The area of the room is 432 square feet

Step-by-step explanation:

Let us use the ratio method to solve the question

∵ The scale drawing of the room is 1 inch: 3 feet

→ That means each 1 inch in the drawing represents 3 feet in real

∵ The drawing is 8 inches long by 6 inches wide

∴ The drawing length of the room = 8 inches

∴ The drawing width of the room = 6 inches

→ By using the ratio method

→  inches  :  feet

→  1            :  3

→  8           :  L

→  6           :  W

→ By using the cross multiplication

∵ 1 × L = 8 × 3

∴ L = 24

∴ The actual length of the room is 24 feet

∵ 1 × W = 6 × 3

∴ W = 18

∴ The actual width of the room is 18 feet

Use the formula of the area of the rectangle to find the area of the room

∵ Area of rectangle = length × width

∴ Area of the room = 24 × 18

∴ Area of the room = 432 feet²

∴ The area of the room is 432 square feet

8 0
3 years ago
What's the correct answer and why?
alexandr402 [8]
3x^4 becomes 3(3x)^4=3*3^4*x^4
y^2 becomes (3y)^2=3^2y²
the new z=3² the old z, so b is correct.
4 0
3 years ago
Find the total area of the figure below? Round to the nearest tenth<br> PLEASE HELP ME!!!
ivann1987 [24]
I know the correct answer but first you have to answer my math question
3 0
2 years ago
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
olga2289 [7]

Answer:can’t read it

Step-by-step explanation:

Can you take a pic closer to the screen?

7 0
3 years ago
Other questions:
  • 6372(52836y)+46x=665x(637y+57)
    14·1 answer
  • Evan spent 20 hours doing homework last week. This week he spent 25 hours doing homework. He says that he spent 125% more time d
    11·1 answer
  • What's 3/4×5/12 in simplest form
    15·1 answer
  • Write the given fraction in simplest form.<br><br>20/27​
    13·2 answers
  • Perform the following division. Be sure answers are reduced to lowest terms. 2 7/8 ÷ 1/4 =
    15·1 answer
  • What is the greatest common factor of 8 and 9
    14·2 answers
  • Mary makes trail mix with bulk nuts and dried fruit. She spends $4.50 on the dried fruit. Mixed nuts cost $2.50 per pound. She h
    6·1 answer
  • Which equation matches the graph?
    10·1 answer
  • Type the correct answer in the box.
    9·1 answer
  • What is the least common mulitple of 12,48,and 96
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!