9514 1404 393
Answer:
100(π+3) ≈ 614 square units
Step-by-step explanation:
Assuming the rectangles are squares, the total area is that of 3 squares and a circle of radius 10.
circle area = πr² = π·10² = 100π
area of squares = 3×s² = 3·10² = 300
Then the total area is ...
300 +100π ≈ 614 . . . square units
Answer:
If each carton can feed 4 people, then you can buy 7 carton and feed 4 people per carton with leftovers expected, or you can buy 5 carton and serve 5 people per carton with no leftovers
Step-by-step explanation:
5 carton × 5 = 25 people fed
while 7 carton × 4 = 28 people = 25 people fed plus leftover for 3 people
Answer: what are lengths of lizard
Step-by-step explanation: you can calculate average length of lizard
And also standard deviation and determine median too
27-18=9 (difference between)
9/18=0.5 (9 as a percentage of original as a decimal)
0.5x100=50 (as a percentage)
50% increase
Answer:
Put the equation in standard form by bringing the 4x + 1 to the left side.
7x2 - 4x - 1 = 0
We use the discriminant to determine the nature of the roots of a quadratic equation. The discriminant is the expression underneath the radical in the quadratic formula: b2 - 4ac.
b2 - 4ac In this case, a = 7, b = -4, and c = -1
(-4)2 - 4(7)(-1)
16 + 28 = 44
Now here are the rules for determining the nature of the roots:
(1) If the discriminant = 0, then there is one real root (this omits the ± from the quadratic formula, leaving only one possible solution)
(2) If the discriminant > 0, then there are two real roots (this keeps the ±, giving you two solutions)
(3) If the discriminant < 0, then there are two imaginary roots (this means there is a negative under the radical, making the solutions imaginary)
44 > 0, so there are two real roots
