Answer: a) The percent of change in perimeter is 100%.
b) The percent of change in area is 300%.
Step-by-step explanation:
Since we have given that
if the side lengths of rectangle get doubled.
Let the length be 'x'.
Let the breadth be 'y'.
So, Perimeter of rectangle would be
Area of rectangle would be
After doubling the lengths,
Length becomes '2x'.
Width becomes '2y'.
So, perimeter becomes
Area becomes
a. Find the percent of change in the perimeter.
Hence, the percent of change in perimeter is 100%.
b. Find the percent of change in the area.
Hence, the percent of change in area is 300%.
Answer:
Option A
Step-by-step explanation:
From the last triangle given in the picture,
x° = 45° + 85° [By the definition of exterior angle of a triangle]
x = 130°
Another way to get the value of x,
By triangle sum theorem,
45° + 85° + y° = 180°
y° = 180° - 130°
y = 50°
And (x° + y°) = 180° [linear pair of angles]
x + 50 = 180
x = 130°
Therefore, x = 130° because 180 - (45 + 85) = 50 and 180 - 50 = 130
Option A is the answer.
ANSWER
EXPLANATION
We want to find the value of a for which the binomial, 2a-1 is smaller than the value of the binomial 7-1.2a by 7.
This means that, when we subtract 2a-1 from 7-1.2a, we should get 7.
Expand:
Group similar terms:
Divide both sides by -3.2,
Answer:
Step-by-step explanation:
Ok first add all of the results together 44+55+55+66=220 Then found out how many percent each number is of 220. 44 is 20% of 220, 55 is 25%, 55 is 25%, 66 is 30%
