Answer:
180° -x
Step-by-step explanation:
The reference angle is the smallest positive angle between the terminal ray and the x-axis. For a 2nd-Quadrant angle such as 150°, the reference angle is ...
180° -x
_____
If your answer choice is really 180' -x, then the correct answer is "none of the above." 180' is 3°, since there are 60 minutes in a degree.
Answer:
20
Step-by-step explanation:
To solve this you have to make a system of equations.
Since the father and son's age sum up to 60, the first equation will be:
f + s = 60
Secondly, since the father's age is 5 times the age of the son 6 years ago the equation will be:
6 - (5s) = f
Now, you have to solve the first equation to let it equal to s
f + s = 60
f = 60 - s
Plug in
6 - 5s = 60 - s
+s +s
6 - 4s = 60
-6 -6
---------------------
-4s = 54
----- -----
-4 -4
s ≅ 14
14 + 6 = 20
Answer:
Emanuel did a mistake in her first step.
Step-by-step explanation:
The given expression is
Emanuel solve this problem but she did a mistake in her first step. She distributes negative sign with 1 and 2 both which is incorrect. We can write negative sign with either 1 or 2 but not both.
Correct steps are:
Step 1:
Step 2:
Step 3:
Therefore, she did a mistake in her first step.
Answer:
9
Step-by-step explanation:
190 people=3 busses
570:190=3
so, 570 people= 190p. + 190p. +190p.= 3 busses +3 busses + 3 busses
5 x 10⁻³ is a scientific notation.
5 is the coefficient
10 is the base
3 is the exponent. The sign of the exponent signifies which direction the decimal point moved.
negative sign means that the decimal point moved from left to right in writing the scientific notation.
positive sign means that the decimal point moved from right to left in writing the scientific notation.
5 x 10⁻³ is 0.005 in standard form.
had the exponent been positive.
5 x 10³ is 5000 in standard form