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
maks197457 [2]
3 years ago
7

A jar contains 3 black marbles, 4 white marbles and 5 striped marbles. If a marble is picked at random, what is the probability

that it is black? Give your answer as a fraction in lowest terms.
Mathematics
2 answers:
aniked [119]3 years ago
5 0

Answer:

1/4

Step-by-step explanation:

3 black marbles, 4 white marbles and 5 striped marbles. = 12 marbles

P(black) = number of black / total

             =3/12

               =1/4

aliina [53]3 years ago
4 0

Answer:

1/4

Step-by-step explanation:

# of black marbles/ total # of marbles

3/(3+4+5)

3/12

1/4

You might be interested in
In triangle MPQ points N and R are located on sides MP and QP with NR drawn. which set of measurements below would justify that
NNADVOKAT [17]
The answer is number 1. Because 12/10 =20/18 is a true statement. None of the others are true
6 0
2 years ago
2. Solve the following equations for 0° Sx < 180°.
diamong [38]

Answer:

See below in bold.

Step-by-step explanation:

(1) cosec ( x + 10) = 3

Now cosec x = 1/sin x so

1 / sin (x + 10) = 3

3 sin (x + 10) = 1

sin (x + 10) = 1/3

x + 10 = 19.47 , 160.53 degrees

x = 9.47, 150.53 degrees.

(ii) cot (x - 30) =0.45

cot (x - 30)= 1 /tan (x- 30) so we have

tan (x - 30) = 1 / 0.45 = 2.2222

x - 30 = 65.77 degrees

x = 95.77 degrees.

5 0
3 years ago
Michael has a set of 24 math problems to do for homework. Michael completed 1/4 of his homework in 3/4 of an hour. If he continu
gtnhenbr [62]

Given:

Total number of problems = 24

Michael completed \dfrac{1}{4} of his homework in \dfrac{3}{4} of an hour.

To find:

What fraction of his homework would he complete in one hour.

Solution:

We have,

Part of work done in \dfrac{3}{4} of an hour =\dfrac{1}{4}

Part of work done in an hour =\dfrac{4}{3}\times \dfrac{1}{4}

                                                =\dfrac{1}{3}

Therefore, he complete \dfrac{1}{3} of his homework in 1 hour. Hence, all options are incorrect.

3 0
3 years ago
8.45 At some point in the season, the Unicorns had won 60% of their basketball games. After that point, they won 8 more games an
ololo11 [35]

Answer:

The total number of games won by Unicorn is 40.

Step-by-step explanation:

  • We are given with a word problem
  • We are asked to find the number of unicorns played during the season
  • We can do this in two steps

         Step 1: Finding the win percentage

         Step 2: Finding the number of unicorns played during the season

Step 1 of 2

Let the number of games played by unicorn be x.The unicorn won 60% of the first x-10 games That is $\frac{60}{100} \times(x-10)$

Combining the 8 games we get,

$$\begin{gathered}\frac{60}{100}(x-10)+8=\frac{60}{100} \times x-\frac{60}{100} \times 10+8 \\0.6 x-6+8=0.6 x+2\end{gathered}$$

Step 2 of 2

The unicorn totally won 65% of the games played.

That is $\frac{65}{100} \times x=0.65 x$

Equating both the equation gives

$$\begin{gathered}0.6 x+2=0.65 x \\2=0.65 x-0.6 x \\2=0.05 x \\\frac{2}{0.05}=x \\40=x\end{gathered}$$

5 0
2 years ago
Help me on this math problem?
shusha [124]

Answer:

just add them

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • colton is playing with interlocking blocks that are each 3/4 inch tall. He makes a tower 17 blocks tall.How tall is his tower in
    15·1 answer
  • Solve the equation<br> -2= <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3x%7D%7B5%7D" id="TexFormula1" title="\frac{3x}{5}" alt="
    6·1 answer
  • Two angles are supplementary. One angle is 107°. What is the measure of the other angle? __________
    6·2 answers
  • Which statement is true
    11·1 answer
  • You are given a set of data with a mean of 50 and standard deviation of 8. Using the normal curve, give an example of an outlier
    5·1 answer
  • 4. Decide if the segment lengths form a triangle. If they do, Indicate whether the triangle is acute, right, or obtuse.
    6·1 answer
  • Help plzzzzz its hard
    6·2 answers
  • 3x+5=12-7x solve? Help ​
    14·1 answer
  • Need help immediately <br> What is the equation of the line shown?
    11·1 answer
  • What is the value of y when y + 2.9 = 11?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!