Answer:
It is J
Step-by-step explanation: 19.5 times 7 is 136.5
Answer:
144
Step-by-step explanation:
![100 \div 5 \times 4 + 4^3 =](https://tex.z-dn.net/?f=%20100%20%5Cdiv%205%20%5Ctimes%204%20%2B%204%5E3%20%3D%20)
![= 20 \times 4 + 4 \times 4 \times 4](https://tex.z-dn.net/?f=%3D%2020%20%5Ctimes%204%20%2B%204%20%5Ctimes%204%20%5Ctimes%204)
![= 80 + 64](https://tex.z-dn.net/?f=%20%3D%2080%20%2B%2064%20)
![= 144](https://tex.z-dn.net/?f=%20%3D%20144%20)
Answer:
A choice
Step-by-step explanation:
sec is defined as 1/cos.
cos is again defined as adjacent to hypotenuse.
We know that adjacent is x and hypotenuse is r.
Therefore:- cos is x/r
Now sec is 1/cos = 1/(x/r)
1 ÷ x/r is 1•r/x
Thus:-
sec is r/x