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borishaifa [10]
3 years ago
15

Cindy is shopping for a television. The original price is $612. Store A has the television on clearance for 30% off. Store B has

it on clearance for 25% off, and Cindy has a 10% off coupon to use at Store B. At which store will she pay less? How much less?
Mathematics
2 answers:
AveGali [126]3 years ago
8 0

Answer:

Step-by-step explanation: store b

ELEN [110]3 years ago
6 0

Answer:

She will pay less at store B

Step-by-step explanation:

30% off of $612 is $428.4

25% off of $612 is $459

Remember she has a coupon for 10% off

10% off of 459 is $413.1

She would save $198.9

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Elza [17]

99 pints = 49.5 quarts



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3 years ago
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khan academy is giving me only this explanation but won't go into detail and I cannot understand it for the life of me. how do I
Setler [38]

Answer:

12 - 4i

Step-by-step explanation:

-2i ( 2+6i)

Distribute

-2i * 2 + -2i *6i

-4i - 12 i^2

We know that i^2 = -1 so replace it

-4i - 12(-1)

-4i + 12

Then put in the order a+bi  where the real number comes first and the imaginary number comes last

12 - 4i

7 0
2 years ago
2. A teacher buys 144 erasers for her class. She gives each child an equal amount. There are 24 students in the class. How many
postnew [5]

Answer:

They each got 6 erasers.

Step-by-step explanation:

Sorry If I am wrong.

6 0
2 years ago
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Plz help me i'll give points and brainliest
RoseWind [281]

Step-by-step explanation:

-1,6 is -1 left 6 up

1,-6 is 1 right -6 down

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3 0
3 years ago
Assume the general population gets an average of 7 hours of sleep per night. You randomly select 45 college students and survey
tekilochka [14]

Answer:

a) ii. This is a left-tailed test.

b) -1.59

c) -1.301

d) i. reject null hypothesis

e) Option i) The data supports the claim that college students get less sleep than the general population.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 7 hours

Sample mean, \bar{x} = 6.87 hours

Sample size, n = 45

Alpha, α = 0.10

Sample standard deviation, s =  0.55 hours

First, we design the null and the alternate hypothesis

H_{0}: \mu = 7\text{ hours}\\H_A: \mu < 7\text{ hours}

a) We use one-tailed(left) t test to perform this hypothesis.

b) Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{6.87 - 7}{\frac{0.55}{\sqrt{45}} } =-1.59

c) Now,

t_{critical} \text{ at 0.10 level of significance, 44 degree of freedom } = -1.301

Since,                    

t_{stat} < t_{critical}

d) We fail to accept the null hypothesis and reject it.

We accept the alternate hypothesis and conclude that  mean number of hours of sleep for all college students is less than 7 hours.

e) Option i) The data supports the claim that college students get less sleep than the general population.

8 0
3 years ago
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