Answer:
2.20$
11$
Step-by-step explanation:
18.70/8.5=2.2
2.2= 2.20$
2.2x5=11
11=11$
Answer:√(6/5) and √(9/7) and √(7/5)
Step-by-step explanation:
1/4 = 0.25
5/4 = 1.25
√(6/5)=1.095445...
√(9/7)=1.1338934...
√(7/5)=1.1832159...
Thus, any non-perfect square radicals will be irrational numbers.
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It would take about 23.1 months for the plant population to be 138 plants.
<h3>
Exponential Function</h3>
An exponential function is in the form:
y = abˣ
Where y,x are variables, a is the initial value of y and b is the multiplication factor.
Given:
Where P is the plant population after m months.
For a population of 138 plants:
It would take about 23.1 months for the plant population to be 138 plants.
Find out more on Exponential Function at: brainly.com/question/12940982
Solve for z:
42 = -7 (z - 3)
42 = -7 (z - 3) is equivalent to -7 (z - 3) = 42:
-7 (z - 3) = 42
Divide both sides of -7 (z - 3) = 42 by -7:
(-7 (z - 3))/(-7) = 42/(-7)
(-7)/(-7) = 1:
z - 3 = 42/(-7)
The gcd of 42 and -7 is 7, so 42/(-7) = (7×6)/(7 (-1)) = 7/7×6/(-1) = 6/(-1):
z - 3 = 6/(-1)
Multiply numerator and denominator of 6/(-1) by -1:
z - 3 = -6
Add 3 to both sides:
z + (3 - 3) = 3 - 6
3 - 3 = 0:
z = 3 - 6
3 - 6 = -3:
Answer: z = -3