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Monica [59]
3 years ago
10

Help plzzzzzzzzzz !!!!!

Mathematics
1 answer:
matrenka [14]3 years ago
8 0

Answer:

51

Step-by-step explanation:

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Are -77x +11y = 77 and y-7x+7=0 parellel
dem82 [27]

Answer:

no

Step-by-step explanation:

because they have different gradients

4 0
3 years ago
Evaluate the expression for c = 6/7, 54/21 divided by c
Degger [83]
This is how i worked it out.
Good Luck

4 0
3 years ago
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A study investigated whether price affects people's judgment. Twenty people each tasted six cabernet sauvignon wines and rated h
patriot [66]

Answer:

t=5.5080( to 3 d.p)

Step-by-step explanation:

From the data given,

n =20

Deviation= 34/20= 1.7

Standard deviation (sd)= 1.3803(√Deviation)

Standard Error = sd/√n

= 1.3803/V20 = 0.3086

Test statistic is:

t = deviation /SE

= 1.7/0.3086 = 5.5080

ndf = 20 - 1 = 19

alpha = 0.01

One Tailed - Right Side Test

From Table, critical value of t =2.5395

Since the calculated value of t = 5.5080 is greater than critical value of t = 2.5395, the difference is significant. Reject null hypothesis.

t score = 5.5080

ndf = 19

One Tail - Right side Test

By Technology, p - value = 0.000

Since p - value is less than alpha , reject null hypothesis.

Conclusion:

From the result obtained it can be concluded that ,the data support the claim that the mean rating assigned to the wine when the cost is described as $90 is greater than the mean rating assigned to the wine when the cost is described as $10.

5 0
3 years ago
Inequalitys math question<br> please help
Zielflug [23.3K]
Answer is B (hope this helps!)

8 0
2 years ago
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Four gallons of gasoline weigh 25 pounds . find the unit rate in pounds per gallon.
notka56 [123]
There are several information's that are already given in the question. Based on those information's the answer to the question can be easily deduced. 
Weight of 4 gallons of gasoline = 25 pounds
Then
Weight of 1 gallon of gasoline = 25/4 pounds
                                                = 6.25 pounds
From the above deduction, we can easily conclude that the unit rate in pounds per gallon of gasoline is 6.25 pounds/gallon. I hope the answer helps you.
7 0
3 years ago
Read 2 more answers
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