15 divide 8 is 1.87 or 2.00 and 31 divide 11 is 2.81 or 3.00
Answer:
21/4
Step-by-step explanation:
1/2[-8 +16 - ( -2 1/2)] = 1/2 ( - 8 + 16 + 2 1/2) = 1/2 ( 8 + 2 1/2) = 1/2 * = 1/2 * 21/2 = 21/4
Answer:
The value of x is 4 .
Step-by-step explanation:
Given as :
The two triangle is as
Let The smaller triangle = DEC
Let The larger triangle = ABC
The measure of side EC = a
The measure of side BC = x
∵ side BC = side EC (as both sides of triangle are equal)
So, x = a + a
i.e x = 2 a
From the figure shown it is clear that both triangles are similar
So, the ratio of triangles are equal
i.e =
or, =
Or, =
Or, 3 x - 5 = 7
Or, 3 x = 7 + 5
Or, 3 x = 12
∴ x =
i.e x = 4
Hence, The value of x is 4 . Answer
Plug in 2 for x. f(20=2-51 = -49