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Nina [5.8K]
3 years ago
5

Slope=2 goes through (-2,2) What is the equation?

Mathematics
1 answer:
astraxan [27]3 years ago
5 0

Answer:

y= 2x+6

Step-by-step explanation:

the formula of a line is y = mx+b

so just sub everything in to find b

(-2,2) - (x,y)

y= mx +b (your slope, 2 is subbed into mx)

y=2x+b

2=2(-2) +b

2= -4 +b

2+4= -4+4 +b

6=b

therefore the slope being mx and b=6

the equation is y=2x+6

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(c) a farm brings 15 tons of watermelon to market. find a 90% confidence interval for the population mean cash value of this cro
Nina [5.8K]

Answer:

First we need to name some of the variables we are given:n = 38 the sample sizex = 6.88 the sample mean = 1.86 the population standard deviationWe need to find a 90% confidence interval for the mean price per 100 lbs of watermelon: = 1-.90 = .10/2 = .05z(/2) = -1.64-z(/2) = 1.64This can give us a probability expression:P(-1.645 < z < 1.645) = .90The margin of error is calculated with the formula: E = z(/2)(/√n)E = 1.645(1.86/√38) = $.4963(300) = $148.89   Then to calculate the upper and lower limit we add and subtract E from x:lower limit = 6.88 - .4963 = $7.38(300) = $2214upper limit = 6.88 + .4963 = $6.38(300) = $1914Note: We multiply the E, upper and lower limits by 300 because 15 tons is 30000lbs and we need the price per 100 lbs, so we divide 30000/100 and get 300.

Step-by-step explanation:

7 0
2 years ago
Will a 9m long planks fit into a square room of side 7m? please I really needed help with this one
Darya [45]
No because if it is a square all the sides are 7m long so a 9m plank will not fit. Hope this helps.
5 0
3 years ago
Replace the ? By &lt; or &gt;
Contact [7]

Answer:

>

Step-by-step explanation:

-3 ? \frac{19}{5}

-3 ? -3.8

-3 is greater than -3.8

i.e -3 > -3.8

3 0
3 years ago
Boeing currently produces five models of airplanes for commercial sale. The airline that Lauren works for is rapidly expanding a
Sedbober [7]

Answer:

The number of combinations will she have to analyze is  10.

Step-by-step explanation:

We know that Boeing currently produces five models of airplanes for commercial sale.  The airline that Lauren works for is rapidly expanding and would like to purchase three airplanes of different models to service various routes.  We calculate the number of combinations will she have to analyze.

C^5_3=\frac{5!}{3!(5-3)!}=\frac{5\cdot 4\cdot 3!}{3!\cdot 2\cdot 1}=10

The number of combinations will she have to analyze is  10.

4 0
3 years ago
A = 9 over 2 (b + 35)
shutvik [7]
So u have 9/2 Multiply those 2 numbers and you get 18 no (b+35) B would be whatever number that would go with 18 to make 35 Ex: 18+_=35↪18+17=35 So your answer is 17 (Hope I helped but If I didn't may God be with you for more help)
7 0
3 years ago
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