Answer:
187 cm²
Step-by-step explanation:
The bottom rectangle area is easy, it is 15*9 = 135 cm².
To find the area of the triangle, you only need the base width and its height (you don't need the hypotenuse). You can then use the formula: area triangle is base times half height.
The base width is 15-7 = 8 cm
The height is 22-9 = 13 cm
So the area of the triangle is 13*8/2 = 52 cm²
Together with the 135 of the rectangle that sums to 52+135 = 187 cm².
1/4 is equivalent to 5/20
The factors of 4 are 1, 2, and 4 .
The factors of 9 are 1, 3, and 9 .
C: 4 is the right answer
Step-by-step explanation:
Given
a1 = -3
a15 = 53
We know that explicit formula for the arithmetic sequence is:

For the 15th, term it will be

Adding 3 on both sides

Dividing both sides by 14

Hence,
C: 4 is the right answer
Keywords: Arithmetic sequence, Common Difference
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