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zmey [24]
2 years ago
7

Use the formula R=3V+2T to find V when R=40 and T=5

Mathematics
2 answers:
steposvetlana [31]2 years ago
8 0

Answer:

V = 10

Step-by-step explanation:

to find V, you must make the equation V = ......

original equation is

R = 3V + 2T

first subtract 2T from both sides

R - 2T = 3V

now divide by 3

V = \frac{R - 2T}{3}

now plug in the numbers for R= 40 and T= 5

V = (40 - 2(5)) / 3

V = 30 / 3 = 10

serg [7]2 years ago
3 0

Answer:

V = 10

Step-by-step explanation:

Plug in give information

40 = 3V + 2×5

40 = 3V + 10 we want to get V by itself so subtract 10 from both sides

30 = 3V Divide both sides by 3

10 = V

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make up an equation in the form of an y=kx +b, the graph which passes through the following points: (5,5) and (-10,-19)
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Answer:

y = 8/5x - 3

Step-by-step explanation:

First, find the slope using rise over run (y2 - y1) / (x2 - x1)

(y2 - y1) / (x2 - x1)

(-19 - 5) / (-10 - 5)

-24 / -15

= 8/5

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5 = 8/5(5) + b

5 = 8 + b

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Plug in the slope and b into y = mx + b

y = 8/5x - 3

So, the equation is y = 8/5x - 3

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The following are the number of sales which a sample of 9 car salespeople of an insurance company in Florida and a sample of 8 s
Montano1993 [528]

Answer:

There is no difference in the number of sales between The Florida salespeople and Washington salespeople

Sp^2 = 39

Step-by-step explanation:

Given data :

Florida: 39, 44, 42, 50, 55, 48, 51, 38, 54

Washington: 42, 43, 56, 50, 49, 52, 53, 56

number of sales persons in Florida = 9

number of sales persons in Washington = 8

variance = constant

a)Determine if there is difference between the Florida salespeople and Washington salespeople

we will carry out a two tailed test based on the given data

H0 : u1 = u2  

H1 : u1 ≠ u2

x ( mean ) = 46.77,  y ( mean ) = 50.13 ,

s1^2 = 39.69,  s2^2 = 28.41,   n1 = 9 ,   n2 = 8

therefore :

Sp^2 = \frac{n1s1^2 + n2s2^2}{n1 + n2-2} =  38.96  ≈ 39

performing test statistic

t = \frac{x- y }{sp\sqrt{\frac{1}{n1} +\frac{1}{n2} } }    = \frac{-3.36}{3.0330} = -1.1078

critical value is at t = 0.05 and for a two tailed test it is at 2.13  therefore e accept H0 at 5% .    This shows that there is no difference in sales

5 0
3 years ago
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