Answer:
Solve equations of the form a x 2 + c = 0 by extracting the roots. Extracting roots involves isolating the square and then applying the square root property. After applying the square root property, you have two linear equations that each can be solved.
Step-by-step explanation:
<span>In
the fairest school 20% are below 16 years old
1/3 are teachers which is equals to = 21
Let’s start solving:
=> 1/3 of 100% = ( 100 / 3 = 33.33% )
thus 33.33% = 21
=> 21 x 3 = 63, is the total number of people in the school.
Let’s try solving the number of people below 16 years old
Then there are 20% of it:
=> 63 * .20 = 12.6
Thus, there are around 13 people who are 16 years old younger.</span>
Answer:
There are 4 suits (Clubs, Hearts, Diamonds, and Spades) and there are 13 cards in each suit ... Without replacement means the card IS NOT put back into the deck. With ... What is the probability of drawing a red king and then a black 7 without replacement? ... we have 2 red kings in the deck, and 2 black 7's in the deck.
Step-by-step explanation:
Answer:
Step-by-step explanation:
t(-7)= 3(-7)= -21
s(-21)= 2-(-21)= 2 + 21= 23
Answer:
26.13 ft^2
Step-by-step explanation:
The area of the triangle is (1/2)(height)(base) = (1/2)(4)(6) = 12. (The base is 6 because it is made up of two radii of the semicircle.)
The area of a whole circle is pi(radius)^2.
Area of whole circle is pi(3^2) = 9pi. But you have only half a circle, so its area is 4.5pi.
Using 3.14 to approximate pi, the area of the semicircle is 4.5(3.14) = 14.13.
Adding this to the area of the triangle, you get a total area
14.13 + 12 = 26.13 ft^2
