The diagrams show a right angled triangle and a rectangle.
2 answers:
Answer:
x = 5
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = bh ( b is the base and h the height )
Here b = 8 and h = 15 , then
A = × 8 × 15 = 4 × 15 = 60 cm²
The area of the rectangle is also 60 cm² , then
length × breadth = 60 , that is
12x = 60 ( divide both sides by 12 )
x = 5
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Sin(90 + q) = sin(90)*cos(q) + sin(q)*cos(90)
sin(90 + q) = 1 * cos(q) + sin(q)*0
sin(90 + q) = cos(q)
You can elimate anything beginning with Cos
You can also eliminate the sin function with a minus between it.
Problem 2
Sin(x) = 1/csc(x) That makes C and D incorrect.
Correct answer has to be A. Since this is a multiple choice question you can't qualify the answer, but there are some points that exhibit questionable behavior, like 2
Answer:
0.91517
Step-by-step explanation:
Given that SAT scores (out of 1600) are distributed normally with a mean of 1100 and a standard deviation of 200. Suppose a school council awards a certificate of excellence to all students who score at least 1350 on the SAT, and suppose we pick one of the recognized students at random.
Let A - the event passing in SAT with atleast 1500
B - getting award i.e getting atleast 1350
Required probability = P(B/A)
= P(X>1500)/P(X>1350)
X is N (1100, 200)
Corresponding Z score =