2 questions. Answer as soon as possible. If brainly doesn't allow you to answer then pls tell me in the question comments.
Answers
Answer:
oo madam comment off he
Step-by-step explanation:
The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. (Take the lowest score to be l.)
Step-by-step explanation:
(c)
Area of rectangle = length × breadth
Area of region A :
length = 10 cm
breadth = 5 cm
Area = 10 cm × 5 cm
Area = 50 cm²
Area of region B :
length = x cm
breadth = 5 cm
Area = x cm × 5 cm
Area = 5x cm²
Area of region C :
length = 12 cm
breadth = 5 cm
Area = 12 cm × 5 cm
Area = 60 cm²
Given, sum of the areas if regions A, B and C is 140 cm²
50 cm² + 5x cm² + 60 cm² = 140 cm²
110 + 5x = 140
5x = 140 – 110
5x = 30
x = 30/5
x = 6
Therefore, x = 6 cm
________________________
(d) Let the initial length be 'l' and initial breadth be 'b'
initial area = lb
Now, length is doubled keeping the breadth same.
new length = 2l
New area = (2l) × b
New area = 2lb
New area = 2(initial area)
the area is doubled.
Therefore, (i) doubled is the correct option.