Can u give an explanation for the answer
1 answer:
Answer:
There are 8 quarters in the jar.
Step-by-step explanation:
There are 20 coins in a jar.
Each coin is either a nickel or a quarter.
The probability of selecting a nickel is 0.6
Let's assume there are x number of nickels
The probability of selecting a nickel coin is = 0.6
So x = 0.6 × 20 = 12
Hence there are are 12 nickel coins and 20 - 12 = 8 quarter coins.
You might be interested in
Answer:
A pythagorean identity means that for any angle ,
.
This also means The symbol, theta (
) represents one of the acute angles in the right triangle. The hypotenuse (familiarly c in the regular pythagorean theorem) is 1. The triangle base is
, and the height (side perpendicular to the base, making a right angle) is
. The angle theta is opposite the
side.
Step-by-step explanation:
The pythagorean theorem applies to right triangles, which always have a 90 degree angle. Pythagorean identities are used to simplify trigonometric expressions/evaluate trig functions and to find the trig ratios in a right triangle.