Answer:
30
Step-by-step explanation:
let number of questions in the test be x
9 of the first 10 questions are correct
so only x-10 questions remain
3/10 of the (x-10) = 3/10(x-10) questions are correct
scored 50% for the whole test
so only half of x = x/2 questions are correct
combining the above:
9+3/10(x-10) = x/2
9+3/10x-3=x/2
9-3=(1/2-3/10)x
1/5x=6
x=30
Answer:
64
Step-by-step explanation:
From a given point outside the circle, the two tangents to the circle are the same length. This means: JB = JA, CL = AL, and BK = CK.
The perimeter is the sum of all these segments, so is ...
P = JB +JA +CL +AL +BK +CK = 8 +8 +13 +13 +11 +11
= 2(8 +13 +11) = 2(32)
P = 64
The perimeter of the triangle is 64 units.
Answer:
<em>Explanation below</em>
Step-by-step explanation:
<u>Inverse Trigonometric Functions</u>
They are defined as the inverse of the basic trigonometric functions which are sine, cosine, tangent, cotangent, secant, and cosecant.
The corresponding inverse functions are called arcsin, arccos, arctan, arccot, arcsec, arccsc.
These inverse functions in trigonometry are used to get the angle with any of the trigonometry ratios.
For example,

Then:

Since:

Or, equivalently:

Then:

Or:

Answer:
really!!?? thank you!!! need one! ;w;
Step-by-step explanation: