7 - 5x - (3 + 5x)...distribute thru the parenthesis
7 - 5x - 3 - 5x =
-10x + 4...or 4 - 10x
To find x we are gonna use the cosine formula.
Cos 0 = adj/hyp
0 represents theta
Cos 0 = adj/hyp
Cos 0 = 25/40
Convert 25/40 to decimal from
25/40 = 0.625
On a scientific calculator press the key “2nd F” or “Shift” then “cos”(which would give cos inverse) then type 0.625 equal.
Cos-1 0 0.625
= 51.31 degrees
x is therefore 51.3 degrees to the nearest tenth
Dear Nicky37, 300 seconds is only 5 minutes.
Answer:
x = -16
Step-by-step explantion:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Hope this helps!
(・∀・(・∀・(・∀・*)
Repeated
the lowest first digit can be 2
hmm, 5 numbers
the smallest number is 211
1 cannot be used for the first number, leaving 4 choices for the first number
the last 2 numbers can be any of the 5 numbers so 5 choices each for each of those slots
so
4*5*5=100
there are 100 numbers
B is answer