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
Arte-miy333 [17]
3 years ago
5

In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students in

the class wear glasses?
Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

Answer:

8

Step-by-step explanation:

40% of 20 is 8 25% of 8 is 2 50% of 12 is 6 so you will add 6+2=8

You might be interested in
A 6.3<br> B 7.5<br> C 6.7<br> D 6.5
Arlecino [84]
So in this case use sine to figure this out.

To convert 48 to the ratio, you gotta use a calculator unless you've memorized everything. do sin(48), which equals about 0.74.

Since Sin is opposite / hypotenuse, 5/h must equal 0.74

So do 5 / 0.74 to get about 6.76 as your answer.


3 0
3 years ago
Suppose a binomial event has a probability of success of 0.3, and 750 trials are performed. What is the standard deviation of th
stepladder [879]
Hello there. Sorry from last time.

What is the standard deviation of the possible outcomes? Roundyour answer to two decimal places.

<span>B.12.55</span>


8 0
3 years ago
Read 2 more answers
Find all values of a such that (a-3)/sqrta=-sqrta
Mariana [72]

Answer:

From the Pythagorean theorem...

 

[ distance between (a, 7)  and  (2, 1) ]2   =   [a - 2]2  +  [7 - 1]2

 

And they tell us that the distance equals  3√5  , so

 

[  3√5 ]2   =   [a - 2]2  +  [7 - 1]2

 

45   =   [a - 2]2  +  36

 

9   =   [a - 2]2

 

±√9  =   a - 2

 

± 3   =   a - 2

 

± 3  +  2   =   a

 

a  =  3 + 2  =  5          or          a = -3 + 2  =  -1

 

and

 

5  +  -1   =   4

Step-by-step explanation:

hope dis helps

3 0
3 years ago
Can someone please help me with math.
Anit [1.1K]

Answer:

17 is C

18 is add

19 is C

Step-by-step explanation:

Question 18 is worded a little weird.

so. (x^2)(x^3) = x^5, so you should add the expotents when you are multiplying them.

4 0
3 years ago
Solve simultaneously <br>2 log y=log 2 + log x <br>2 to power y = 4 to power x<br>​
skad [1K]

Answer:

Step-by-step explanation:

hello : here is an solution

3 0
3 years ago
Other questions:
  • Alex buys 24 apples from the supermarket. When he gets home, he finds that 6 apples are bad. What percentage of the apples are b
    11·1 answer
  • An ice sculpture in the shape of a square pyramid was in the shape of a cube before it was created as shown below.
    9·1 answer
  • (-4)(5)+(-3)(-2) whats is it???
    7·2 answers
  • What is the graph of y = 1/x?
    10·1 answer
  • An isosceles triangle has an angle of 9x+1 and another of 88, find x
    13·1 answer
  • Please help if you can
    14·1 answer
  • Type the missing number in this sequence
    5·1 answer
  • If x+1/x = 2 then x^3 + 1/x^3
    15·2 answers
  • A jacket at a clothing store is being discounted by 10% if the jacket was originally priced at X dollars which of the following
    5·1 answer
  • If two sides of your triangle are 6cm and 18cm, what is the range of values that the third side could be?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!