Answer:
0
Step-by-step explanation:
Given
a + 7(a + b) - 8(a + b) + b ← distribute both parenthesis
= a + 7a + 7b - 8a - 8b + b ← collect like terms
= a + 7a - 8a + 7b - 8b + b
= 0
<em>Answer,</em>
<em>1) -2</em>
<em>2) 3/b (Reciprical means flipping the fraction) </em>
<em>3) -5 for number (Question 11) </em>
<em>4) Number 12 I couldn't tell if the sign was a dividing sign or a plus sign. </em>
<em>5) I'm not very good with word problems so, I won't be much help. But, I think they want you to subtract the highest temperature from the lowest. </em>
Answer:
20/5
Step-by-step explanation:
20/5=4
because it does
hopthis helps
The power in C is correct. it is x / 37 So B,C and D all have the correct power. Now you must turn to the base. You are talking about a half life so what is raised to the the correct power must be 1/2
That eliminates D and C both.
A is gone because it has the wrong power.
B <<<< the first part of the question's answer.
Now we will answer the 6 days part.
y = 477 * (1/2) ^(x / 37)
x = 6
y = 477 * (1/2)^ (6/37)
y = 477 * (1/2)^ (0.162 [repeating] )
y = 477 * 0.8397
y = 426.2876 which is confirmed by the answer given. <<<< second answer.
