Answer:
650 calls
Step-by-step explanation:
so since you have 18$ per month plus 5 cents per call you would do
18+0.5n(n represent the number of calls)= the total fee of $50.50 cents.
thus,now you need to figure out how much the phone calls were without the monthly fee so you would do:
50.50-18=32.50
so 32.50 is the price of all the phone calls
then you divide 32.50 by 0.05 which equals to 650
meaning that n=650
hope I helped!
1. 5 to 20 ---> c. 20 to 80
(5/20 and 20/80, both have the same answer(ratio) which is equal to 1/4)
2. 5 to 40 ---> e. 11 to 88
(5/40 and 11/88, both have the same answer(ratio) which is equal to 1/8)
3. 9 to 45 ---> b. 7 to 35
(9/45 and 7/35, both have the same answer(ratio) which is equal to 1/5)
4. 2 to 20 ---> a. 1 to 10
(2/20 and 1/10, both have the same answer(ratio) which is equal to 1/10)
5. 4 to 12 ---> d. 10 to 30
(4/12 and 10/30, both have the same answer(ratio) which is equal to 1/3)
Answer:
B) Sin^-1(-1) = 3pi/2 or 270°
D) Sin^-1(-1) = -pi/2 or -90°
Step-by-step explanation:
Sine function:
The sine function is -1 at 270º(-90º), which is 3pi/2 = -pi/2.
Inverse sine:
The input of the inverse sine function is a value, and the output are the angles which have the sine equal to the input.
Sin^-1(-1)
Angles for which the sine are -1, that is 3pi/2 or 270° and -pi/2 or -90°. Thus, options B and D are correct.
The answer is 19mm. Hope this helped.
Consider ways to multiply to get 42. Then see if the numbers can be used to make -27.
42 = 21 × 2...not going to work.
42 = 14 × 3...not going to work. (Though -14 and -3 add to -<em>17</em>)
42 = 7 × 6...not going to work.
There are no whole number solutions to this question.
