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Mars2501 [29]
3 years ago
5

two-fifth of the students in a mixed school are boys. if there are 30 girl in the school how many are boys​

Mathematics
2 answers:
lilavasa [31]3 years ago
6 0
12. 1/5 of 30 = 6. 6 x 2 = 12
nekit [7.7K]3 years ago
5 0

Answer:

12

Step-by-step explanation:

One fifth of 30 would mean u divide 30 by 5 which equals 6. Since it's two fifths you would have 12.

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Which is the correct answer​
Sav [38]

Answer:

Option 3

Step-by-step explanation:

Using the order of operations, you will find out that 7 x 10^3 = 7,000, and 3 x 10^2 = 300. Dividing 7,000 by 300 will get you 23.333~, so 300 does go into 7,000 a little more than 20 times.

8 0
3 years ago
Alex, Jean, Pat, and Tommie do not have cars. Each has a different way of getting around town (bike, bus, roller blades, and wal
uranmaximum [27]
Answer is Tommie.
alex and joan dont know how to ride 
joan does not like riding bike,that means same applies to the roller
7 0
3 years ago
Read 2 more answers
Fiona recorded the mean math exam grade for six random samples of students from the entire seventh-grade class. Sample Sample Me
Charra [1.4K]

The reason why Fiona cannot make a valid prediction based on the mean of the population is that the variation of Fiona’s samples is too large.

<h3>Why can't Fiona use the means she recorded?</h3><h3 />

Mean is quite sensitive to outliers so it is best used when the variation between variables is not too much.

In Fiona's case, there variation is quite high with high variable of 95 compared to a low value of 45.

Find out more on effect of outliers at brainly.com/question/16815987.

#SPJ1

7 0
2 years ago
What is the input-output table for the function f(x) = 3x^2-x+4
mojhsa [17]

Answer:

Step-by-step explanation:

The input-output table can be made by putting value of x and finding the value of f(x)

f(x) = 3x^2-x+4

f(0) = 3(0)^2-0+4 = 0-0+4 = 4

f(1) = 3(1)^2-1+4 = 3-1+4 = 2+4 =6

f(2) = 3(2)^2-2+4 = 3(4)-2+4 = 12-2+4 = 10+4 = 14

f(3) = 3(3)^2-3+4 = 3(9)-3+4 = 27-3+4 = 24+4 = 28

So put value of x and find f(x) and fill the input-output table.

x  f(x)

0   4

1    6

2   14

3    28

3 0
3 years ago
What is the domain of g(x) = sqrt x +1
Shkiper50 [21]
There can be no negative in a sqrt 
so x+1 must be equal or greater then 0
x+1\geq 0
x \geq -1
so all answers must be greater then  or equal to -1
-1,0,1,2,3,4,5,6,7,8
(-1,infinity) is the domain
7 0
3 years ago
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