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
natali 33 [55]
3 years ago
12

A jar contains 2 red marbles, 5 blue marbles, and 1 green marble. What is the probability of selecting a red

Mathematics
1 answer:
mixer [17]3 years ago
5 0

Answer:

1/4

Step-by-step explanation:

2+5+1=8

8 divided by 100% =12.5%

You might be interested in
Which of the following is the solution to the differentiable equation dy/dx=4x/y, where Y(2)=-2
aliya0001 [1]

First we'll substitute \frac{dy}{dx} with y'

y'=\frac{4x}{y}

Then we can separate this.

yy'=4x

Then we'll solve this.

yy'=4x: \frac{y^2}{2}=2x^2+c_1

\frac{y^2}{2}=2x^2-6

y=2\sqrt{x^2-3},y=-2\sqrt{x^2-3}

Then we'll plug in to find the extraneous solutions (if any)

y=-2\sqrt{x^2-3}

7 0
3 years ago
HELP!! Triangle A′B′C′ is the image of triangle ABC after a dilation.
Nina [5.8K]
Down three and over left four so something like (-3, -4) im pretty sure
3 0
3 years ago
An experimenter studies vision in low light by
Mariulka [41]

Answer:

Independent variable- time spent in the dark room

Dependent variable - number of objects correctly identified

Conditions of the experiment- low light environment and lighted environments

Scores from the independent variable are used to construct the frequency distribution

Step-by-step explanation:

The independent variable is the factor that is being manipulated in an experiment and this time it is the time spent in a darkened room.

The dependent variable is the response variable, in this case, the number of objects correctly identified.

The experimental conditions involved bringing people from a lighted area into a darkened room.

3 0
3 years ago
At noon, ship A is 170 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 20 km/h. How fast is
garik1379 [7]
Check the picture below.

now, keep in mind that ship B is going at 20kph, thus from noon to 4pm, is 4 hours, so it has travelled by then 20 * 4 or 80 kilometers, thus b = 80.

whilst the ship B is moving north, the distance "a" is not really changing, and thus is a constant, that matters because the derivative of a constant is 0.

\bf c^2=a^2+b^2\implies \stackrel{chain~rule}{2c\cfrac{dc}{dt}}=0+2b\cfrac{db}{dt}\implies \cfrac{dc}{dt}=\cfrac{b\frac{db}{dt}}{c}
\\\\\\
\begin{cases}
\frac{db}{dt}=20\\
c=10\sqrt{353}\\
b=80
\end{cases}\implies \cfrac{dc}{dt}=\cfrac{80\cdot 20}{10\sqrt{353}}\implies \cfrac{dc}{dt}=\cfrac{160}{\sqrt{353}}
\\\\\\
\textit{and rationalizing the denominator}\implies \cfrac{160\sqrt{353}}{353}

8 0
3 years ago
Factorise each of the following.
Alborosie

I will do (a) only.

6rt - 3st + 6ru - 3su

6rt - 3st = 3t(2r - s)

6ru - 3su = 3u(2r - s)

Answer: (3t + 3u)(2r - s)

Do the rest likewise.

7 0
3 years ago
Other questions:
  • The sum eighty two dollars to spend on seven books after buying them she had twelve dollars how much did each book cost
    13·1 answer
  • A supermarket has 148 shrubs on their property, but they are having trouble mowing grass so they need to pay to have cut down sh
    5·2 answers
  • 9. What is the likelihood that a randomly selected couple's relationship survived between 90 and 150 days
    7·1 answer
  • A baker sells bread for $6 and rolls for $2 each. The baker needs to sell $36 worth of baked goods by the end of the day. How ma
    15·1 answer
  • Is √10 repeating, greater than, less then, or equal to five? Because 10 lies between two consecutive perfect squares (in increas
    5·1 answer
  • So I need help again so here is the question “My mom is baking cookies for a party. The recipe requires 2 eggs for every 4
    14·1 answer
  • Omg someone do these for me and ill give brainliest please im rushing
    5·2 answers
  • What is 9 3/7 in simplest form?
    9·2 answers
  • Please answer C: <3!
    15·2 answers
  • Whats the distance between the two points (-5,2) (2,-7)​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!