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Aloiza [94]
3 years ago
7

A student earns a flat rate of $30/day planting trees, plus $0.50/tree planted. Create a table of values and scatter plot showin

g the amount earned on days when 100,150,200,250 and 300 trees are planted.
Mathematics
1 answer:
Dima020 [189]3 years ago
3 0
Y = 0.50x + 30

trees planted :   (x)  100      150     200      250      300
amount earned :(y)   80       105     130      155      180
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P(x) = 5x4 + 7x3 – 2x2 – 3x + c<br> C=
Ghella [55]

Answer:

c=Px−5x4−7x3+2x2+3x

Step-by-step explanation:

Solve for

c

by simplifying both sides of the equation, then isolating the variable.

5 0
3 years ago
What's the unit rate of 52songs on 4cd's?
Brrunno [24]
13 songs per cd 4/4 and 52/4= 1/13
5 0
3 years ago
Assume that the heights of men are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. If th
ioda

Answer:

The bottom cutoff heights to be eligible for this experiment is 66.1 inches.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Mean of 69.0 inches and a standard deviation of 2.8 inches.

This means that \mu = 69, \sigma = 2.8

What is the bottom cutoff heights to be eligible for this experiment?

The bottom 15% are excluded, so the bottom cutoff is the 15th percentile, which is X when Z has a pvalue of 0.15. So X when Z = -1.037.

Z = \frac{X - \mu}{\sigma}

-1.037 = \frac{X - 69}{2.8}

X - 69 = -1.037*2.8

X = 66.1

The bottom cutoff heights to be eligible for this experiment is 66.1 inches.

8 0
3 years ago
Find the unit rate. 6 2/5 revolutions in 2 2/3 seconds
Brums [2.3K]
The unit rate will be in revolutions per second. That means divide number of revolutions by number of seconds.

first convert from mixed fraction.
6 2/5 = 32/5 revolutions
2 2/3 = 8/3 seconds

32/5 ÷ 8/3
flip multiply
32/5 × 3/8 = 12/5 revolutions per second

12/5 = 2 2/5 revolutions per second


6 0
3 years ago
Please help me with this also if you may, Tell me how you got what you got. Worth a lot of points :)
lesantik [10]

Answer

Step-by-step explanation:

i need the form of opperations what are you doing? standard form algerbraic roots with mixed fractions?

4 0
3 years ago
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