Answer:
it is the 3 one
Step-by-step explanation:
The unit rate is 9 miles per hour.
In order to find how much its unit rate will be you need to use this expression below.
<em>n = number of hours</em>
<em>m = number of miles </em>
m divided by n or <em>m/n</em>
In order to find how much does he travel in given hours see this below.
<em>n = number of hours</em>
<em>m = number of miles for 1 hour</em>
<em>nm or n * m</em>
<h3>
Answer:</h3>
a=45
<h3>
Solution:</h3>
- We need to multiply both sides by 3 in order to get rid of the denominator, 3:
- 2/3a•3=30•3
- 2a=90
- Divide both sides by 2:
- a=45
Hope it helps.
Do comment if you have any query.
The farmer should plant 40 trees per acre to maximize her yield to harvest.
<h3>What is a system of equations?</h3>
A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Let F be the number of fruit per acre
Factor out the 3 and complete the square
So the vertex is at (-30, 1200)
70 - 30 = 40
The farmer should plant 40 trees per acre to maximize her yield to harvest.
Learn more about equations here;
brainly.com/question/10413253
#SPJ1
First sequence with common difference:
8-x=y-8
Second sequence:
20-y=y-x
Solving two simultaneous equations:
x=16-y
20-y=y-16+y
y=12
x=4
