Answer:
x *2 + (28-x)*4 = 100
Step-by-step explanation:
Given
Total number of questions in the paper = 28
Out of these 28 questions let us say that x number of questions are of 2 points and 28-x questions are of 4 points.
Also, the complete test is of 100 marks
Thus, the linear equation representing the
x *2 + (28-x)*4 = 100
Answer:
x=5
Step-by-step explanation:
23-3= 4x or 20
that means 4x is equal to 20
20 divided by 4 is 5
so x is equal to 5
Answer:
a) 75
b) 360 students
c) 56 ; 57 ; 58
d) 134 inches
e) 27°
Step-by-step explanation:
a)
b)
c)
d)
e)
Answer:
(3y+2)(y+7)
Step-by-step explanation:
I think you meant (y+7)+3y(y+7)+(y+7). Anyways, we have to count the number of (y+7) there are. The first term tells us we have 1 group. The second term tell us we have 3y groups. The last term tells us we have 1 group. Therefore we have 1+3y+1 groups of y+7 which gives us (3y+2)(y+7)
Answer:
$39.50
Step-by-step explanation:
Multiply 7.9 by 5 to get 39.5
