Answer:
Micheal has £6.97 left
Step-by-step explanation:
6 × £0.32 = £1.92
2 × £1.09 = £2.18
£9.69 + £1.92 + £2.18 = £13.79
£20.76 ‒ £13.79 = £6.97
The question is
Find the values of x and y
Let
x---------> the number of 6-inch pies Annika sold
y--------> the number of 8-inch pies Annika sold
we know that
x=2y------> equation 1
5x+9y=133---> equation 2
substitute the equation 1 in equation 2
5*[2y]+9y=133
10y+9y=133
19y=133
y=7
x=2y-----> x=2*7-----> x=14
the answer is
the number of an 6-inch pies is 14
the number of an 8-inch pie is 7
Distance of Foci = c
Then,
c = 4
As c^2 + b^2 = a^2
And, b = 3
Then us will have:
a^2 = 4^2 + 3^2
a^2 = 16 + 9
a^2 = 25
a = 5
The equation of ellipse to this question is:
x^2 / a^2 + y^2/b^2 = 1
Then,
x^2 / 25 + y^2 / 9 = 1
Answer:
B
Step-by-step explanation:
Using the cosine ratio in the right triangle
cos37° = 
= 
Multiply both sides by x
x × cos37° = 48 ( divide both sides by cos37° )
x = 
≈ 60.1 → B
