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barxatty [35]
3 years ago
5

suppose the growth of Bermuda grass from germination to lawn-care length is normally distributed with a mean of 20 days with a s

tandard deviation of 3.3 days. the growth of buffalo grass from germination to lawn-care length is normally distributed with a mean of 21 days with a standard deviation of 2.3 days. on which lawn would a z-score of -2.5 give a longer growing period? explain.
Mathematics
1 answer:
Law Incorporation [45]3 years ago
6 0

I chose D bcuz it the right answer to pick

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What is the solution to the system of equations graphed below? y = -2x - 3 y = 3x + 2 O A. (-1,1) B. (0,2)​
Grace [21]
Answer:

A. (1-,1)

How ?: Just plug in -1 in the x spot and 1 in the y spot on both sides... If answers are the same that’s the answer.
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14,219.92 The 9 in the ones place is _______ the value of the 9 in the tenths place.
Elza [17]

Answer:

less

Step-by-step explanation:

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What simple machine is this? i'll mark brainliest!
BartSMP [9]

A LEVER

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Cheddar Cheese
disa [49]

Complete question :

Cheddar Cheese

$3/lb

Swiss Cheese

$5/lb

Keisha is catering a luncheon. She has $30 to spend on a mixture of Cheddar cheese and Swiss cheese. How many pounds of cheese can Keisha get if she buys only Cheddar cheese? Only Swiss cheese? A mixture of both cheeses?

What linear equation in standard form can she use to model the situation?

Answer:

10 lbs of cheddar cheese

6 lbs of Swiss cheese

$3a + $5b = $30

Step-by-step explanation:

Given that :

Cheddar cheese = $3/lb

Swiss cheese = $5/lb

Total amount budgeted for cheese = $30

How many pounds of cheese can Keisha get if she buys only Cheddar cheese?

Pounds of cheedar cheese obtainable with $30

Total budget / cost per pound of cheddar cheese

$30 / 3 = 10 pounds of cheedar cheese

Only Swiss cheese?

Pounds of cheedar cheese obtainable with $30

Total budget / cost per pound of Swiss cheese

$30 / 5 = 6 pounds of Swiss cheese

A mixture of both cheeses?

What linear equation in standard form can she use to model the situation?

Let amount of cheddar cheese she can get = a

Let amount of Swiss cheese she can get = b

Hence,

(Cost per pound of cheddar cheese * number of pounds of cheddar) + (Cost per pound of Swiss cheese * number of pounds of Swiss cheese) = total budgeted amount

(3 * a) + (5 * b) = $30

$3a + $5b = $30

4 0
3 years ago
The value of y varies directly with x and y=12 when x=-6 find y when x=-4
FinnZ [79.3K]

Answer:

B)8

Step-by-step explanation:

That is the right answer because when y=12,  x=-6

12/-6 = -2

This means that x = y/-2

or y = x * -2

-4 * -2 = 8

Hope I helped

8 0
3 years ago
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