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
yanalaym [24]
2 years ago
5

Thereare 30 students in mr.holland's music class.if 30% of the students play in the school band,how many students in the class p

lay in the school band
Mathematics
2 answers:
stiv31 [10]2 years ago
6 0
9 students in the class play in the school band. 

30% of 30
Well, when doing a percentage you first turn the percentage into a decimal (move the % two units to the left). So 30% = 0.3

In math, the word of  means multiplication, so: 0.3 x 30 
Which equal 9. 

You can also turn the percentage into a fraction, it's really up to preference. 

30/100 of 30 = 3/10 of 30 = 3/10 x 30 = 3/10 x 30/1 = 9/1 or 9

Sergio039 [100]2 years ago
3 0
9 students are in the school band
You might be interested in
Please helppppppp ❤️
liberstina [14]

Answer:

Inverse of f exists.

Step-by-step explanation:

From the graph attached,

If we do the horizontal line test for the function graphed,

We find the function as one to one function.

In other words for every input value (x-value) there is a different output value.

Since, for one-to-one functions, inverse of the functions exist.

Therefore, the answer will be,

The inverse of 'f' exists.

7 0
2 years ago
Which expression represents 9 less than a number?
My name is Ann [436]

Answer:

x-9

Step-by-step explanation:

"Less than" switches the way of the expression.

If the "less than" was not there it would have been:

9-x

"Less" means subtract so you would subtract x from 9.

Hope this helped!

7 0
3 years ago
Read 2 more answers
Find the values of a and b such that
Varvara68 [4.7K]

Answer:

a = 1.5

b = 1.75

Step-by-step explanation:

First, we need to solve (x+a)^2 and replace the result in the initial equation as:

x^2+3x+4=(x+a)^2+b\\x^2+3x+4=x^2+2ax+a^2+b

Then, this equality apply only if the coefficient of x is equal in both sides and the constant is equal in both sides.

It means that we have two equations:

3x=2ax\\4=a^2+b

So, using the first equation and solving for a, we get:

3x=2ax\\3=2a\\a=\frac{3}{2}=1.5

Finally, replacing the value of a in the second equation and solving for b, we get:

4=a^2+b\\4=1.5^2+b\\b=4-1.5^2\\b=4-2.25\\b=1.75

3 0
3 years ago
A basketball team plays 82 games each year. How many games will the team play in 25 years?
exis [7]
2050 games will be played in 25 yrs
6 0
2 years ago
Read 2 more answers
A grocery store offers a 10% discount on your entire purchase when you spend more than $50. You have $117 to spend on groceries
astra-53 [7]

Answer:

a≤80

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of the expression 3y by the power of 2 when y=-2 plzzz help
    13·1 answer
  • If cos 67 degrees is close to 2/5 which is closest to the length of no
    7·1 answer
  • Local population doubles every 6 days. If initial population is 100, how many people will there be in 10 days? 15?
    12·1 answer
  • Please answer number 7 ASAP. It’s due tomorrow
    11·1 answer
  • 1. What equation does the model show?
    5·2 answers
  • Help me out mathematics
    15·1 answer
  • PLEASE HELP ME!! I will give brainliest
    10·1 answer
  • If he starts at 1 and jumps 3 units to the left, then where is he on the number line? How far away from zero is he? (explain how
    8·2 answers
  • Which Venn diagram is NOT correct? (Geometry Multiple CHoice)
    8·2 answers
  • Year2000200220042006Number109141182233Year2008201020122014Number270296326355​YearNumber​2000109​2002141​2004182​2006233​​YearNum
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!