Answer:
Step-by-step explanation:
The formula is
which models the exponential function
where a is the initial amount of whatever it is you have (in our case it's bacteria), b is the growth rate (ours is 4 which means that every day the number from the day before increases by a factor of 4), and x is the number of days. We plug into the formula the values we have, starting with x = 1:
Always raise what's inside the parenthesis first, then multiply in the 45. 4 to the first is 4, and 4 multiplied by 45 is 180. After the first day, there are 180 bacteria present in the culture.
Next, x = 2:
which simplifies to
y = 45(16) so
y = 720.
Next, x = 3:
which simplifies to
y = 45(64) so
y = 2880
m∠QPS=90° , m∠QPR=7x−9, m∠RPS=4x+22
From the triangle , m ∠QPR = 40°
Given :
m ∠QPS=90°
m ∠QPR=7x−9
m ∠RPS=4x+22
From the diagram we know that
Substitute the angles inside the equation
Now substitute x by 7 and find out m<QPR
m ∠QPR = 40°
Learn more : brainly.com/question/24720748
Answer:
18
Step-by-step explanation:
NightowlIt can be proven that between any two real numbers there exists a rational number. Therefore there exists a rational number r such that
<span>7.7+<span>2–√</span><r<7.9+<span>2–√</span></span>By calculator we can find a rational number r that satisfies these condition, I choose 9.2. Now subtract square root 2.<span>7.7<9.2−<span>2–√</span><7.9
</span>so the answer is between 7.7 and 7.9
rational number : 7.8
<span>irrational number : 9.2 - √2</span>
Answer:
Question 12
The answer is F
Step-by-step explanation:
The link below provides the answer and explanation to the problem.
https://quizizz.com/admin/quiz/5cc3251388c55c001a50e21f/7th-equations-review