Answer:
answer is down below
Step-by-step explanation:
u have ur two brackets.
(9b+3)(b-7)=0
take 1 bracket at a time
9b+3=0
solve it so:
9b+3=0
9b=-3
b= -3 / 9
<u>Ans: b=-1/3</u>
take the other bracket
b-7=0
solve it:
<u>Ans: b=+7 </u>
Answer:
for question one - x = 12
Step-by-step explanation:
a triangle is always 180, in other words you will add all the corners equal to 180
ex (for first question) - 7x -2 + 4x + 5x - 10 = 180
you add like terms, the x with x and single numbers with numbers, which results in 16x - 12 = 180. then you do the original operation "what you do to one sign of the equal side you do to the other"
Answer:
The margin of error for a sample size of 250 is 6
Step-by-step explanation:
The margin of error is given as
1/square root of the sample size
Thus, margin of error for a sapless size of 250 is
1/√250
= 1/15. 811
= 6
0.625 is the answer to this
The answer is -6 degrees Celsius
