In science class, the girl to boy ratio is 3 to 7.
1 answer:
Answer:
There are <u>35 boys</u> in the class.
Step-by-step explanation:
Girls to Boys ratio = 3:7
Total number of students in class = 50
Let total number of girls be '3x' and total number of boys be '7x'
Total number of girls + Total number of boys = Total number of students
3x + 7x = 50
10x = 50
x = 50/10
x = 5
Total number of girls = 3 × 5 = 15
Total number of boys = 7 × 5 = 35
You might be interested in
QUESTION 1
The given inequality is
and
.
If (3,-2) is a solution; then it must satisfy both inequalities.
We put x=3 and y=-2 in to both inequalities.
and
.
:True and
:True
Both inequalities are satisfied, hence (3,-2) is a solution to the given system of inequality.
QUESTION 2
The given inequality is
and
.
If (1,4) is a solution; then it must satisfy both inequalities.
We put x=1 and y=4 in to both inequalities.
and
.
:True and
:True
Both inequalities are satisfied, hence (1,4) is a solution to the given system of inequality.
Ans: True
QUESTION 3
The given inequality is
and
.
If (0,-2) is a solution; then it must satisfy both inequalities.
We put x=0 and y=-2 in to both inequalities.
and
.
:False and
:False
Both inequalities are not satisfied, hence (0,-2) is a solution to the given system of inequality.
Ans:False
QUESTION 4
The given inequality is
and
.
If (0,3) is a solution; then it must satisfy both inequalities.
We put x=0 and y=3 in to both inequalities.
and
.
:True and
: True
Both inequalities are satisfied, hence (0,3) is a solution to the given system of inequality.
Ans:True
QUESTION 5
The given system of inequality is
and
.
If (-3,0) is a solution; then it must satisfy both inequalities.
We put x=-3 and y=0 in to both inequalities.
and
.
;True and
:True
Both inequalities are satisfied, hence (-3,0) is a solution to the given system of inequality.
Ans:True