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leva [86]
3 years ago
7

There are 48 students going on a field trip. One-fourth are girls. How many boys are going on the trip?

Mathematics
1 answer:
Tatiana [17]3 years ago
7 0

Answer:

36 boys are going on the trip

Step-by-step explanation:

given data

total students = 48

girls = One-fourth

to find out

How many boys are going on the trip

solution

first we find  One-fourth part of total students

so total girls are  One-fourth that mean = \frac{48}{4}

girls = \frac{48}{4} = 12

if there 12 girls so remaining are boys

so boys are = total students - girls

boys = 48 - 12

boys = 36

so 36 boys are going on the trip

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After entering the test scores from her Statistics class of 25 students, the instructor calculated some statistics of the scores
ss7ja [257]

Answer:

Std deviation would change but IQR would not change.

Step-by-step explanation:

Given that after entering the test scores from her Statistics class of 25 students, the instructor calculated some statistics of the scores. Upon checking, she discovered that she had entered the top score as 46, but it should have been 56.

When arranged in ascending order the last entry would be 56 instead of 46.

Hence this would not affect the middle entry or quartiles

i.e. in other words there would not be any change in the Interquartile range and Quartile 1 and Quartile 3 are not changed

But standard error would change.  this is because total of all entries now increase by 10, so average would increase by 10/25 = 0.40

This in turn would change the mean deviation x-average for each entry and hence square of deviations.  Thus variance would change and also standard deviation.

4 0
3 years ago
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!
GarryVolchara [31]

Answer:

- Colin's third number was 2

- April's sixth number was the same as Colin's first number.

- April's second number was 8.

Step-by-step explanation:

Colin:

First number = 0

Second number = 1

Third number = 2

Fourth number = 3

Fifth number = 4

Sixth number = 5

April:

First number = 10

Second number = 8

Third number = 6

Fourth number = 4

Fifth number = 2

Sixth number = 0

I hope this helps :)

4 0
2 years ago
A chef make some dough. He used 60% of the dough to make a loaf of bread. He then used 15% of the remaining 900 grams of dough.
Agata [3.3K]

Answer:

25% or 125 grams

Step-by-step explanation:

Assuming 100% was 900 grams ÷ 4 = 125 grams

6 0
3 years ago
What is this one don’t get it
charle [14.2K]

Answer:

14 cups

Step-by-step explanation:

3 pizzas needed

1 pizza means 2 cups of flour

So for 3 pizzas he will need 6 cups of flour

If he has 20 cups of flour and he uses 6, how much is left?

20-6=14

8 0
3 years ago
Read 2 more answers
inverse of f(x)=(x+1)/(2x+1) I know how to get the inverse if the bottom or top of the fraction have an x on their own, but i am
kodGreya [7K]
To solve for the inverse
1. replace f(x) with y
2. switch all x with y and y with x
3. solve for y
4. replace y with f^{-1}(x)



f(x)=\frac{x+1}{2x+1}
replace
y=\frac{x+1}{2x+1}
switch
x=\frac{y+1}{2y+1}
solve
(2y+1)(x)=y+1
2yx+x=y+1 [tex]x-1=y-2xy
x-1=y(1-2x)
\frac{x-1}{1-2x}=y
y=\frac{x-1}{1-2x}
replace
f^{-1}(x)=\frac{x-1}{1-2x}
7 0
3 years ago
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