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
Kay [80]
3 years ago
5

The average height of a class of 18 students is 105 cm After arrival of 7 new students the

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Total number of students = 18 + 7 = 25

Average height of the 25 students = 105 - 5 = 100 cm


Sum of height of all students = 100 x 25 = 2500cm


Answer: 2500cm

You might be interested in
The larger of two positive integers is three more than the
katrin2010 [14]

Answer:

y=x+4

Step-by-step explanation:

So, let's start with the fact that we have two numbers. Let's call one of them "x" and the other one "y." Let's also assume that "y" is the larger number and "x" is the smaller number.

 

We know that both of them added together (the sum) gives us 74. Mathematically, that means:

 

x+y=74.

 

We also know that the larger number ("y") is 4 more than the smaller number ("x"). Another way to say this is, if you have the smaller number and add 4 more to it, you'll end up with the larger number. Mathematically, this means:

 

y=x+4

 

Since we know that y=x+4, we can put "x+4" into the first equation for "y", giving us:

 

x+(x+4)=74

 

Simplifying gives us:

 

2x+4=74

   -4   -4

  ---------

2x=70

---  ---

2    2

 

 

x=35

 

Since we now know that x=35, and we know that y=x+4, we now know that:

 

y=(35)+4

y=39

 

Now that we have both of the numbers, we should check our work to ensure it's correct:

 

Does 39+35=74?      Yes it does.

 

Is 39 (the larger of the two numbers) four more than the smallest number (35)?    Yes it is.

3 0
3 years ago
In the figure below, parallel lines AB and CD are cut by transversals AC and BD They intersect at E. Two angle measures are give
ratelena [41]

Answer:

Step-by-step explanation:

????????

7 0
3 years ago
Read 2 more answers
CAN SOMEONE HELP EM WITH THSES TWO QUESTIONS AND EXPLAIN HOW YOU GOT IT IF YOU DO THAT I WILL GIVE YOU THE CROWN AND FIVE STARS
ella [17]

Answer:

1)

A.  <em>x</em>  = 85/7

I used the formula length = area divided by width to get a.

2)

B. <em>w </em>= 85.6/12

I used the formula width = area divided by length to get b.

3 0
3 years ago
I need some help, please. : )
ankoles [38]

Answer:

A

Step-by-step explanation:

The y intercept = (0,0) since the c value = 0.

Since the numerical coefficient of x^2 is > 0, the graph opens upward.

a = 1

b = 7

c = 0

The Table describing all the conditions is A

4 0
3 years ago
Area of the base=
umka21 [38]

Answer:

16 pi

Step-by-step explanation:

The base is the circle

A = pi r^2

A = pi (4)^2

A = 16 pi

3 0
3 years ago
Read 2 more answers
Other questions:
  • 5. 2x+y=4<br> ty<br> 2<br> -20<br> 2<br> 2
    12·1 answer
  • Can some one can do both​
    13·1 answer
  • −2(x + 3) = −2(x + 1) − 4.
    12·1 answer
  • The cube root of 5 times the square root of 5 over the cube root of 5 to the 5th power
    13·1 answer
  • Max ran 50 meters in 10 seconds. molly ran 30 meters in 5 seconds. who ran faster
    14·2 answers
  • Where does a mathematician go when she commits a crime
    11·2 answers
  • Divide. Express your answer in simplest form.
    7·1 answer
  • X^2 + 6x +15=0 solve the equation using the quadratic formula​
    9·1 answer
  • What is the equation of the line through (2,-4) and (0,4)?
    7·1 answer
  • Amanda's family is taking a road trip. Their car can travel no more than 352 miles without needing to refill the gas tank. They
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!