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
Doss [256]
3 years ago
13

At the beginning of the school year, there were three 4th grade classes. Mrs. Smith’s class had 19 children, Mr. Day’s class has

17 children, and Ms. Brown’s class had 20 children. At the end of the year there were still three classes, but 13 children had moved during the year. How many total students were left at the end of the year?
Mathematics
2 answers:
Blababa [14]3 years ago
7 0
43 19+17+20 = 56 - 13 = 43
MAVERICK [17]3 years ago
7 0

The answer is 43!!!

You might be interested in
Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. Y
Elena-2011 [213]

Answer:

X: discrete

Y: continuous

M: continuous

N: discrete

P: discrete

Q: continuous

Step-by-step explanation:

First, we have to know the difference between discrete and continuous variables:

  • Discrete variables are those that represent things that are counted, 3 red cars, 2 chickens, etc.. They take positive integer values, {0, 1, 2, ..., n}, being [0, n] the interval from which the variable takes values, that means, there is a finite number of possible values.
  • Continuous variables are those that represent things that are measured, 3.56 km of railway laid, 5.77 l of paint used. They take positive real values, that means that in the interval used for the variable there are infinite possible values.

Now, we classify each variable:

  1. The number of automobile accidents per year in Virginia (X) is a discrete variable, as there can't be half an accident, one counts how many accidents are per year to know X.
  2. The length of time to play 18 holes of golf (Y) is a continuous variable, as it can take 2 hours, or 2.5 hours, or 2 hours, 30 minutes, 2 seconds, one measures how long it took to play 18 holes to know Y.
  3. The amount of milk produced yearly by a particular cow (M) is a continuous variable, as one measures how much milk was produced to know M.
  4. The number of eggs laid each month by a hen (N) is a discrete variable, as one counts how much eggs were laid to know N.
  5. The number of building permits issued each month in a certain city (P) is a discrete variable, as one counts how many permits were issued to know P.
  6. The weight of grain produced per acre (Q) is a continuous variable, as one measures the weight per acre to know Q.
3 0
3 years ago
Please help! Or if someone can explain how to find the answer
VARVARA [1.3K]

Answer:

If the equation is in the form, ax + b = c, where x is the variable, you can solve the equation as before. First “undo” the addition and subtraction, and then “undo” the multiplication and division. Solve 3y + 2 = 11. Subtract 2 from both sides of the equation to get the term with the variable by itself.

Answer: x = 20

All this is exaple hople it help

5 0
3 years ago
Read 2 more answers
What is the value of the digit 4 in the number 524,897,123
vagabundo [1.1K]
In 524897123, the digit 4 is in the millions place

hope this helps
7 0
3 years ago
Read 2 more answers
Andy estimated that he would need 79 feet of lumber for a tree house project. He later found that the actual amount of lumber ne
Radda [10]

Answer:

Step-by-step explanation:

79 divided by 68 is your answer

You can do the math

5 0
3 years ago
What is the square root of 35
katen-ka-za [31]

\sqrt{35}  = \\  5.9160797831
6 0
3 years ago
Read 2 more answers
Other questions:
  • Divide f(x) by d(x), and write a summary statement in the form indicated.
    14·2 answers
  • plz help quick i will give brainliest to the first person to answer: The equation a = 180x(n-2)/n represents the angle measures,
    7·2 answers
  • Solve 5m − 3h = 45 for h.
    5·1 answer
  • Help me please!! Slope
    12·1 answer
  • HELPPPPPPP ASAP!!!!!!!!!!!!
    10·2 answers
  • WILL MARK YOU BRAINLIEST
    6·2 answers
  • On each turn of the knob, a gumball machine is equally likely to dispense a red, yellow, green or blue gumball, independent from
    5·1 answer
  • Woody wants to earn $250 to buy a bicycle by selling lemonade. it cost him 0.05 dollars to make which he sells for 0.25 dollars
    8·1 answer
  • PLZ PLZ HELP WILL MARK BRAINLIEST Select ALL the correct answers. Select all the expressions that will include a remainder.
    8·1 answer
  • If Micah lives 8 miles from school and Bianca lives 6 miles from school, what are the coordinates of the school?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!