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Tresset [83]
3 years ago
15

there are 30 students in mr. Holland music class. If 30% of the students play in the school band, how many students in the class

play in the school band?
Mathematics
2 answers:
MA_775_DIABLO [31]3 years ago
3 0
9 students 30% ends up being .3%, multiply .3% by 30 students which equals 9.
ra1l [238]3 years ago
3 0
The number of students playing in the school band is:
30 students*(30%)
= 30 students*30/100
= 9 students
Hope this would help :))
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Mandarinka [93]
1. Answer: D. <span>A = 100 (1/2)^t/13.27

</span>Exponent equation formula would be an= a0( 1+r)^t
In this question, the radio isotopes will become half of its weight after the half-life. So, the ratio would be -0.5 (r= -0.5)
The halftime is 13.27 hours, so the time will be divided by that number. The result would look like this:
an= a0( 1+r)^t
an= a0( 1-0.5)^t/13.27
an= a0( 1/2)^t/13.27

2. Answer: x= 74°

<span>The ladder and the building will make a right triangle with the ladder as the hypotenuse. 
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7 0
3 years ago
11. Twenty-four students in Jamal's class are wearing tennis shoes. There are
RUDIKE [14]

Answer: Incorrect.

Step-by-step explanation: 24 out of 30 is 80.00%.

Step 1: We make the assumption that 30 is 100 % since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that 100 % = 30.

Step 4: In the same vein, x % = 24 .

Step 5: This gives us a pair of simple equations:

100 % = 30(1).

x % = 24(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

100 % / x % = 30/24

Step 7: Taking the inverse (or reciprocal) of both sides yields

x/100 = 24/30

x = 80 %

3 0
11 months ago
Read 2 more answers
How could you change Exercise 5 so that your rule uses the inverse operation?
vekshin1
I'm not sure what operation you're using but for example, subtraction and addition are inverse operations and division and  multiplication are inverse operations
7 0
2 years ago
How to tell if it’s a right triangle from the legs and hypotenuse
mihalych1998 [28]
Use the Pythagorean theorem.

If One leg is a, the other is b, and the hypotenuse is c, then

a² + b² = c²

There ya go
3 0
3 years ago
Please help
horrorfan [7]

Answer:

Mode=. 3,4

Mean= 21/6=3,5

Median= 3+4/2=5

Range=6-4=2

Step-by-step explanation:

1. Mode are numbers in between.

2. Mean add all number devide with the highest value.

3. Median are 2 middle number add them and divide them by 2.

4. Highest value subtract lowest value.

5 0
2 years ago
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