Answer:
I was multiplied by 4.
Step-by-step explanation:
Because 3 times 1 is not 12
and 3 times 2 is not 12
and 3 times 3 is not 12
but only 3 time 4 is 12.
Answer:
10x^3 + 6x^2 + 5x + 3
Step-by-step explanation:
F(x)=(5x+3)(2x^2+1)
= 5x*2x^2 + 5x*1 + 3*2x^2 + 3*1
= 10x^3 + 5x + 6x^2 + 3
= 10x^3 + 6x^2 + 5x + 3
Answer:
The simplified expression is 2x + 1
Step-by-step explanation:
We are given the following in the question:
We have to simplify this expression.
The logarithmic function is the inverse of the exponential function. Thus, we can write
Thus, the simplified expression is 2x + 1
I would say A (7) but I’m not 100% sure.
Important notes:
3 sides 1 angle - COSINE RULE
2 sides 2 angle - SINE RULE
since, the question wants to find the length of BC. In the end we will have 3 sides and 1 angle and use cosine rule
formula of cosine rule:
a² = b² + c² - 2bc Cos A° (to find the length)
Cos A° = b² + c² - a² / 2bc ( to find the angle, if there is given three sides and have to find the angle)
So just substitute,
a² = 13² + 15² - 2(13)(15) Cos 95°
a = 20.6 or 21
