<span>Part A: The coefficients are 20 and 9 and variables in the expression are x and y.
</span><span>Part B: The number of terms are two in the expression, they are 20x and 9y,as they are separated by an addition sign.
</span><span>Part C: 9y term in the expression shows the total earned from trimming hedges.</span>
Answer:
3x+4
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Step-by-step explanation:
<h2>
Average rate of lowering per minute = 36.67 ft/min</h2>
Step-by-step explanation:
After 10 minutes, the bell is at a depth of 600 ft
After 10 minutes
Depth of bell = 600 ft
After 40 minutes the bell is at a depth of 1,700 ft.
After 40 minutes
Depth of bell = 1700 ft
Time gap = 40 - 10 = 30 minutes
Depth fallen = 1700 - 600 = 1100 ft
We have
Depth fallen = Average rate of lowering per minute x Time gap
1100 = Average rate of lowering per minute x 30
Average rate of lowering per minute = 36.67 ft/min
Average=(scores total)/(number of scores)
We are given two averages and two numbers of students so we can calculate the total scores in each class..
75=Ab/40, so the sum of Abraham's class scores is 40(75)=3000 and similarly
81=An/20, so the sum of Anita's class scores is 20(81)=1620
Now we know the total score for all the students is 3000+1620=4620
And we also know that there are a total fo 40+20=60 students, so the overall average for all the students is
a=4620/60=77
Answer:
x = 4
Explanation:
3x - 4y = 36
5x + 2y = 8 ( multiply all by two )
3x - 4y = 36
10x + 4y = 16
13x = 52
Divide by 13
x = 4 hope this helps
