Step-by-step explanation:
A square is a 4-sided shape (called a quadrilateral) that has all equal sides and all equal 90 degree angles. Because the angles are all the opposite sides are parallel. A rhombus is a shape with all equal sides. Since a square has all equal sides, a square is a rhombus. A rhombus is a shape with all equal sides. Since a square has all equal sides, a square is a rhombus. A parallelogram is a shape where both sets of opposite sides are parallel. Since the opposite sides of a square are parallel, a square is also a parallelogram So both Jeff and Brianna were correct.
If we substitute z = 2 - x - y in the last 2 equations it simplifies to 2 equations in x and y:=
x^2 + y^2 + xy - 2x - 2y = 5 and
-x^2 - y^2 - xy + 2x + 2y = -5
if we add these we get 0 = 0 so there are infinite solutions
There are 3 feet in a yard. 27 feet ÷ 3 = 9 yards. Now you have the number of yards. Divide this by 48. You will get 0.1875 yards per dress.
Answer:
Step-by-step explanation:
Express Courier Service has found that the delivery time for packages is normally distributed. So we use
z = (x - mean)/standard deviation
mean = 13
standard deviation = 2
x = time of delivery in hours
a) P(0 lesser than/equal to 18)
z = (18-13)/2 =5/2 = 2.5
Using the normal distribution table, the value is 0.9938
b) to be 95% sure, let the time be t
From the table, the equivalent of z that is 0.95 = 1.645
So 1.645 = (t-13)/2
t-13 = 3.29
t = 3.29+13= 16.29 hours
Answer:
2.86=28 tenths+6 hundredths.
Step-by-step explanation:
2.86=2 ones+8 tenths+6 hundredths.
2.86=28 tenths+6 hundredths.