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
Alexus [3.1K]
3 years ago
7

Out of the 21 students in mrs Clark’s class by 3/7 of the class are boys

Mathematics
2 answers:
saul85 [17]3 years ago
7 0

Answer:

There are 9 boys and 12 girls in mrs Clark's class

Step-by-step explanation:

We are given that mrs Clark has 21 students, of which 3/7 are boys

In order to find the number of boys, we multiply 21 by 3/7 which results in 9

This means there are 9 boys and then we just simply subtract 9 from 21 in order to find the number of girls 21-9=12

therefore there are 9 boys and 12 girls in mrs Clark's class

Ira Lisetskai [31]3 years ago
6 0

Answer:

9 boys

Step-by-step explanation:

because 3 can subtract  in 21  7 time

You might be interested in
Evaluate the expression 7x2y, when x = 4 and y = 2. and just gave me the plain answer
Law Incorporation [45]

Answer:

224

Step-by-step explanation:

7x^2y, when x = 4 and y = 2

Plug in

7x^2y = 7 (4)^2 (2)

=7 * 16 * 2

= 224

3 0
3 years ago
Read 2 more answers
If you draw a card with a value of three or less from a standard deck of cards, I will pay you $43. If not, you pay me $11. (Ace
valina [46]

If W is a random variable representing your winnings from playing the game, then it has support

W=\begin{cases}43&\text{if you draw something with value at most 3}\\-11&\text{otherwise}\end{cases}

There are 52 cards in the deck. Only the 1s, 2s, and 3s fulfill the first condition, so there are 12 ways in which you can win $43. So W has PMF

P(W=w)=\begin{cases}\frac{12}{52}=\frac3{13}&\text{for }w=43\\1-\frac{12}{52}=\frac{10}{13}&\text{for }w=-11\\0&\text{otherwise}\end{cases}

You can expect to win

E[W]=\displaystyle\sum_ww\,P(W=w)=\frac{43\cdot3}{13}-\frac{11\cdot10}{13}=\boxed{\frac{19}{13}}

or about $1.46 per game.

3 0
3 years ago
Can anyone help with this?? I need this grade but I just don't get it. Joshua has a ladder that is 12.8 ft long. He wants to lea
Darina [25.2K]

Answer:

Yes the ladder is safe because 59.25 degrees < 75 degrees

Step-by-step explanation:

In the below photos I have included a screenshot of the equation I used, which I got from another user, and my work with an unfinished diagram and completed equations to the side

5 0
3 years ago
With interest of $1,832.00 and a principal of $16,000 for 206 days, using the ordinary interest method, the rate is:
Anuta_ua [19.1K]
<span>The interest of $1,832.00 the principle of $16,000 for 206 days user the ordinary interest methods to determine the rate. I=Prt 1,832=16,000*206/360*r 1,832=9,155.555556*r r=1,832/9,155.555556 r=0.20 = 20% The rate of the interest is ----------->  20%.    </span>
3 0
3 years ago
ASAP!!!!Batman's age is 4 more than twice Robin's age when you add batman's age to Robin's age you get 58 how old is Batman and
kotegsom [21]

Answer:

56is shjdns djdndjsndnskdvdjdnshdkd

7 0
2 years ago
Other questions:
  • a football is kicked into the air. The height of the football can be modeled by h=-16x^2 +32x, where h is the height reached by
    9·1 answer
  • Reese read twice as many pages Saturday night than she read Sunday night. If she read a total of 78 pages over the weekend, how
    12·2 answers
  • The sum of a number and its reciprocal is 5/2 Find the number and its reciprocal.
    6·1 answer
  • Amanda wants to pay the same amount each month on her car loan. The number of the payment various inversely with the monthly pay
    10·1 answer
  • Alina, Robert, and Makayla are on the student council at their high school.
    5·2 answers
  • The orbital period, P, of a planet and the planet’s distance from the sun, a, in astronomical units is related by the formula P
    14·1 answer
  • Find the surface area of a rectangular prism with a
    12·1 answer
  • Which correctly describes how the graph of the inequality by 6y - 3x &gt; 9 is shaded?
    13·2 answers
  • Here is the next question jj
    10·1 answer
  • I need help plz :( i will give brainlist​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!