Answer:
17.1
Step-by-step explanation:
tan(35)=12/x, x=17.1
Yes. 10/4=2.5 and 15/6=2.5 as well
A = -65
b = 8
a * b = -65 * 8 = - 520
when multiplying, if the signs are different, then the product is negative
Answer:
The curve is a circle of radius 9 centered at the point (0,9) and the equation is
Step-by-step explanation:
Proceed as follows:
Take . Then
Multiply both side by . Then
Use the following substitution . Then
By cancelling out x on both sides we get the following equation
or
Recall that given a expression of the form we can complete the square by adding an substracting the amount . So, we get . In our case, we will complete the square for y, then
. Then
or
.
Recall that the equation of a circle is given by where (h,k) is the center of the circle and r is the radius. In our case we have h=0, k = 9 and r = 9. So it is a circle of radius 9 centered at the point (0,9)
We need to find the common denominator which is 63.
3 x 9 = 27
7 x 9 = 63
3/7 = 27/63
4 x 7 = 28
9 x 7 = 63
4/9 = 28/63
So Daniel spent more money on food.