Answer & Step-by-step explanation:
Add 1 to both sides.
Multiply both sides by 4.
Take the square root of both sides.
Subtract 5 from both sides.
72 what in inches? please clarify
Answer:
Both equations cancel each other out
Step-by-step explanation:
18x + 15 - y = 0
5y = 90x + 12
You want to use the substitution method for this system of equations because the y can easily be isolated in the first equation. Just add y to both sides so that the y variable is isolated. You will have y = 18x + 15. Substitute that equation into the second equation and solve for x. So you will have 5(18x + 15) = 90x + 12.
Use the Distributive Property to get rid of the parenthesis.
90x + 75 = 90x + 12. Subtract 90x from both sides. There is no value for x as the 90x's cancel each other out. And we all know that 75 does not equal 12
You need to go back and look over your shortcuts for sine, cosine, and tangent. Also make sure you label which angle is theta.
For number 20, they give you csc theta = 5/3 and since csc = 1/sin you can flip the answer to get sin=3/5. This means that the opposite length is 3 and the hypotenuse is 5 (your drawing is wrong). Use Pythagorean Theorem to find the other side, which would be
This gives a value of 4 for x, so now you have a triangle who's hypotenuse is 5 with sides equal to 3 and 4.
Use this to find your trig functions, and to help with 22.
leave a comment if you need more help.