Answer:
The area of an equilateral triangle with the side of 6 inches = 15.59 inches²
Step-by-step explanation:
Formula:-
Area of equilateral triangle = √3a²/4
Where 'a' is the side of equilateral triangle.
<u>To find the area of given triangle</u>
Here side a = 6 inches
Area = √3a²/4
= (√3 * 6²)/4
= (1.73 * 36)/4 = 1.73 * 9 = 15.59 inches²
Brian will get 40,000 then Chris will get 70,000
The calculation: 4kg-2.3kg = 1.7 kg
The crate weighs 1.7 kg
Answer:
26 rows
Step-by-step explanation:
this is like a rectangle length×width situation.
seats per row = s
number of rows = r
s × r = 884
s = r + 8
so, we can use e.g. the second equation in the first :
(r + 8) × r = 884
r² + 8r = 884
r² + 8r - 884 = 0
the general solution to such a quadratic equation is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
x = r
a = 1
b = 8
c = -884
r = (-8 ± sqrt(8² - 4×1×-884))/(2×1) =
= (-8 ± sqrt(64 + 3536))/2 = (-8 ± sqrt(3600))/2 =
= (-8 ± 60)/2 = -4 ± 30
r1 = -4 + 30 = 26
r2 = -4 - 30 = -34
a negative number did not make any sense for the number of rows, so r = 26 is our answer.
Answer: X= -7
Step-by-step explanation: A negative time a negative is a positive so -12x-7 is equal to 84. 84 plus 16 is equal too 100.
