We know that
<span>sec a = 5/4
</span>sec(a)=1/cos(a)
then
cos (a)=1/sec(a)
cos (a)=1/(5/4)=4/5---> is positive because the function cos is positive in IV quadrant
the answer is cos(a)=4/5
You can use a guess and check method.
We know .50halfdollar
we know .05 nickels
.50(26) + (.05)(8)=$13.40
13.00+.40=13.40
So, 26 half dollars and 9 nickels
Answer:
Number 1 = 3, Number 2 = 1
Step-by-step explanation:
Create an each for the two number and make the sum of those two numbers equal to 4.
Number 1 we will make x
Number 2 will then be 2x - 5 (five less than two times the first number)
Equation is the sum of the two number and equal to 4
x + 2x - 5 = 4
3x - 5 = 4
Add 5 to both sides
3x = 9
Divide both sides by 3
x = 3
Test your answer.
Number 1 would be equal to 3
Number 2 would be 2(3) - 5 which is 1
Sum of the two numbers 3 + 1 = 4
Answer:
(x+1)2+(y−2)2=5
Explanation:
The general form for a circle with center
(a,b) and radius r is XXX(x−a)2+(y−b)2=r2
With center (−1,2) and given that (0,0) is a solution (i.e. a point on the circle),according to the Pythagorean Theorem: XXX r 2=(−1−0)2+(2−0)2=5
and since the center is (a,b)=(−1,2)by applying the general formula we get:XXX(x+1)+(y−2)2=5
Step-by-step explanation:
its already in the answer
