3/4=.75
7.5/.75= 10
3.45*10=34.5
answer is $34.5
Answer:
a. (0, -3)
Step-by-step explanation:
Put in the inputs and outputs, and see if they come out true or false.
a.
x - 3y ≥ 4
0 - 3(-3) ≥ 4
0 + 9 ≥ 4
9 ≥ 4
True.
b.
x - 3y ≥ 4
0 - 3(5) ≥ 4
0 - 15 ≥ 4
-15 ≥ 4
False.
c.
x - 3y ≥ 4
-4 - 3(-1) ≥ 4
-4 + 3 ≥ 4
-1 ≥ 4
False.
d.
x - 3y ≥ 4
2 - 3(3) ≥ 4
2 - 9 ≥ 4
-7 ≥ 4
False.
Answer:
The exact answer is 30%
Step-by-step explanation:
Answer:
18km/sec
Step-by-step explanation:
1 sec = 3×105 km
3600 sec = 1 hr = ?
3*105×3600 km is travelled in 1 hr
5.6×1013 km - ?
5.6×1013÷(3*105*3600)
ANSWER
9.6
EXPLANATION
The given trigonometric equation is:
![\cos(21 \degree) = \frac{9}{y}](https://tex.z-dn.net/?f=%20%5Ccos%2821%20%5Cdegree%29%20%20%3D%20%20%5Cfrac%7B9%7D%7By%7D%20)
We want to find y, so we multiply both sides by y to get,
![y\cos(21 \degree) = \frac{9}{y} \times y](https://tex.z-dn.net/?f=y%5Ccos%2821%20%5Cdegree%29%20%20%3D%20%20%5Cfrac%7B9%7D%7By%7D%20%20%5Ctimes%20y)
Cancel out the common factors,
.
![y\cos(21 \degree) = 9](https://tex.z-dn.net/?f=y%5Ccos%2821%20%5Cdegree%29%20%20%3D%209)
. Divide both sides by cos(21°)
![y= \frac{9}{\cos(21 \degree)}](https://tex.z-dn.net/?f=y%3D%20%20%5Cfrac%7B9%7D%7B%5Ccos%2821%20%5Cdegree%29%7D%20)
![y = 9.64](https://tex.z-dn.net/?f=y%20%3D%209.64)
To the nearest tenth, y=9.6