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
nydimaria [60]
3 years ago
8

There are 7 red 3 green 2 blue and 8 purple marbles in a bag if a marble is randomly chosen 250 times predict how many times it

should be red or green
Mathematics
1 answer:
kati45 [8]3 years ago
3 0

Answer:

It should be red or green 125 times

Step-by-step explanation:

The first thing to do here is to calculate the probability of selecting a red or a green marble

Total number of marbles = 7 + 3 + 2 + 8 = 20

Probability of selecting a red marble is 7/20

Probability of selecting a green marble is 3/20

The probability of selecting a red or a green marble = Probability of selecting a red marble + Probability of selecting a green marble = 7/20 + 3/20 = 10/20 = 1/2

Now our selection spans 250 times, the number of times it should have been a green or a red marble = The probability of selecting a green or a red marble * number of selection times = 1/2 * 250 = 125 times

You might be interested in
Write the decimal as a percent. <br> 0.35=__%
Alja [10]

Answer:

35%

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find the diameter of a circle with an area of 95.03 square feet
Leona [35]

Answer:

diameter ≈ 11 feet

Step-by-step explanation:

The area (A) of a circle is calculated using the formula

A = πr² ← r is the radius

To find r divide both sides of the equation by π

r² = \frac{A}{\pi } = \frac{95.03}{\pi }

Take the square root of both sides

r = \sqrt{\frac{95.03}{\pi } } ≈ 5.5 feet

Diameter = 2r = 2 × 5.5 = 11 feet

3 0
3 years ago
in massaschusetts a team of scientists studying great white sharks estimate that a population of 15000 seals support fewer than
Evgen [1.6K]

Answer:

The higher you go in the good chain the lower the population.

Explanation:

In the food web, there are only a few sharks since in the food chain they are higher. Just 10% energy is retained in the tissues once the energy is moved from one trophic level to another, and the leftover power is emitted as metabolic energy.

If an animal is high up the energy ladder, the individual has less resources; thus, a few of the highest predators are present in an ecosystem.

3 0
3 years ago
Can someone help me with this?
creativ13 [48]

The missing values are 28° and 62°

<h3>What are perpendicular lines?</h3>

Perpendicular lines are said to be two lines that intersect or meet each other at right angles, that is 90 degrees.

From the information given, we have that;

Line AC ⊥ Line BE

Where:

  • m ∠ ADE = (x + 5)°
  • m ∠ DBE = (3x - 7)°

Hence,

x + 5 + 3x - 7 = 90

collect like terms

4x = 90 + 2

4x = 92

Make 'x' the subject

x = 92/ 4

x = 23

For the missing values

m ∠ ADE = (x + 5)° = ( 23 + 5) = 28°

m ∠ DBE = (3x - 7)° = (3(23) - 7) = 62°

Thus, the missing values are 28° and 62°

Learn more about perpendicular lines here:

brainly.com/question/17683061

#SPJ1

8 0
1 year ago
Solve for X: Correctly answer the question
Klio2033 [76]

Answer:

x=16

Step-by-step explanation:

(whole secant) x (external part) = (tangent)^2

(8+24) * 8 = x^2

32*8 = x^2

256  =x^2

Take the square root of each side

sqrt(256) = sqrt(x^2)

16 = x

3 0
2 years ago
Other questions:
  • I need help with #22
    14·1 answer
  • Solve using the multiplication principle. -8x = -24 answer -16 3 2 16
    10·1 answer
  • Help is the answer of <img src="https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3%7D%20-%5Cfrac%7B4%7D%7B5%7D" id="TexFormula1" title="
    11·1 answer
  • Give the equation of a line in slope-intercept form with the following criteria:
    10·1 answer
  • Talia took the bus from her home to the bank and then walked back to her home along the same route. The round trip took 0.9 hour
    7·1 answer
  • Given polynomials p, q, r, and s . q≠0 ,s≠0 and r≠0
    5·1 answer
  • SOMEONE PLEASE HELP ANYONE !
    12·1 answer
  • What kind of angles are 1 and 5 in the picture below?
    5·2 answers
  • *Check Photo
    12·1 answer
  • Seven less than twice a number is 13
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!