3:4 = G:B
1:5 = Mr. Smith's class: 7th Grade
2:7= 7th: Middle school
12 girls = 3 units
1 unit = 12/3= 4
Boys = 4x4= 16
<em>Whole class = 28 students</em>
Class : Grade = 1:5 <em> 7 = number of units in Mr. Smith's class</em>
28 = 1 unit
5 units= 28x5= 140 <em>There are 140 kids in the grade</em>
140 = 2 units
1 unit = 140/2= 70
70x7=490
<u><em>There are 490 students in the whole grade</em></u>
the answer is 11/4
The unit rate of change between variables is the quotient between the difference between y-values and the difference between x-values
6y=-4x+30
y= -2/3x +5
hope this helps!
Answer:
A = 144 cm²
Step-by-step explanation:
Let the side of the square be x. Using Pythagoras theorem for square,
The area of the square is given by :
A = side²
Put values in the formula.
A = 12²
A = 144 cm²
So, the area of the square is equal 144 cm².
Answer:
15/17
Step-by-step explanation:
sin A = side opposite A/ hypotenuse
= a/ c
=15/17
