Mathematics College

Kari lives in Arizona and is purchasing a new laptop. The list price for the laptop is $399.99. How much will
Kari pay for the laptop after tax?

Kari Lives In Arizona And Is Purchasing A New Laptop. The List Price For The Laptop Is $399.99. How Much

Answers

Answer 1

Answer:

$434.39

Step-by-step explanation:

Before tax the laptop was 399.99.

8.6% of 399.99 is 34.40

Add the two, 399.99+34.40

434.39

Related Questions

evaluate 13+(43÷2)×5−17 .

Answers

Answer:

103.5

Step-by-step explanation:

13 + (43 ÷ 2) × 5 - 17

13 + 21.5 × 5 - 17

13 + 107.5 - 17

107.5 - 4

103.5

103.5

I recommend using an app called “Photomath” for math problems

what is the answer to this simplify
2(3 + 5y)​

Answers

The right answer is ( 6+10y )

Answer:

6 + 10y

Step-by-step explanation:

Hi,

To begin, you need to distribute the 2 to 3 and 5y (same thing as multiplying it).

2(3 + 5y)

6 + 10y

(Multiply the 2 by 3 and then the 2 by 5y)

Since 6 doesn't have a variable and 10y does, you can't combine them and, therefore, 6 + 10y is your answer.

I hope this helps :)

Find the slope of the line.

Answers

Answer:

3/3 or 1

Step-by-step explanation:

Remember the slope of the line is y/x

You can either count the distance going from point 1 to point 2 or

subtract (4-1)/(4-1)= 3/3

What is the value of x?

Answers

Answer:

The value of x=12

Step-by-step explanation:

because the whole thing is 90 and the other angles are equal to 78 if you add them together. So you would subtract 90-78 which equals 12.

Today is Tues, Jan 27th. Two weeks
ago it was Jan?

Answers

Answer:

yes

Step-by-step explanation:

two weeks ago was jan 13th so yes

w + what - s = w
help plz help helppp i want help

Answers

Answer: S

Step-by-step explanation:

w + ? - s = w

w + s - s = w

w = w

"Fifty-seven more than two times j"

Answers

Answer:

2j+57

Step-by-step explanation:

Two times a umber j is expressed as 2j

if Fifty-seven is more than two times j", this means we will have to add 57 to 2j as shown;

f(j) = 2j + 57

Hence the statement written as a function is expressed as 2j+57

(1.5×10^3)+(2.5×10^2) in standard form​

Answers

Your answer would be: 1.75 x 10^3

I hope this helps you :)
Have a great week

Will give brainlst
Have a nice day

Answers

Answer:

7/2

Step-by-step explanation:

[tex]12x=4(x+2)+20\implies\\12x=4x+8+20\implies\\12x=4x+28\implies\\8x=28\implies\\x=28/8=7/2[/tex]

[tex]y=8x+12[/tex]

Answer:

14/4 , y = 8x + 12

Step-by-step explanation:

12x = 4x + 28

x= 14/4

.

y = ax+b

a is the slope

b is the y intercept

Much concern has been expressed regarding the practice of using nitrates as meat preservatives. In one study involving possible effects of these chemicals, bacteria cultures were grown in a medium containing nitrates. The rate of up take of radio-labeled amino acid (in dpm, disintegrations per minute) was then determined for each culture, yielding the following observations:
7251 6871 9632 6866 9094 5849 8957 7978 7064 7494 7883 8178 7523 8724 7468
Suppose that it is know that the mean rate of uptake for cultures without nitrates is 8000. Do the data suggest that the addition of nitrates results in a decrease in the mean rate of uptake? Test the appropriate hypotheses using a significance level of .10.
Please use all 9 steps to answer this question with exact numbers in the question. Thank you!!
1. Describe the population characteristic about which hypotheses are to be tested.
2. State the null hypothesis H0.
3. State the alternative hypothesis Ha.
4. Choose the significance level, a, for the test. Note: Many times a will be specified in the problem, so just state it here. If it is not given, you are free to choose an appropriate significance level like a = .05
5. Check to make sure that any conditions/assumptions required for the test are reasonable. Note: Even if you believe that the assumptions have not been met, make a note of that and then say, "but we will proceed with the test anyway".
6. Clearly display the test statistic to be used and calculate the observed value of the test statistic.
7. Determine the P-value associated with the observed value of the test statistic.
8. State the conclusion (reject H0 or fail to reject H0) with reference to the level of significance.
9. State a final conclusion in the context of the problem.

Answers

Answer:

1) μ = 8000

2)  H0:  μ ≥8000

3)   Ha: μ  < 8000

4)  α= 0.10

5)  If the sample size is at least 15 a student's t test can be used.And we assume that the variances of the two independent groups are almost equal.

6) t= x`- μ/ s.d/ √n  = -0.816

7) The P- value = 0.214083.

8) The critical region is [-∞, -1.345]

9) Fail to Reject the Null Hypothesis

Step-by-step explanation:

1) The population characteristic is the population mean =μ = 8000

2) The claim is that the  addition of nitrates results in a decrease in the mean rate of uptake i.e μ < 8000

The null hypothesis is that  μ ≥ 8000

2) Null hypothesis: H0:  μ ≥8000

3) Alternative hypothesis:  Ha: μ  < 8000

4) The significance level alpha = α= 0.10

5)  If the sample size is at least 15 a student's t test can be used.And we assume that the variances of the two independent groups are almost equal.

Calculating mean and standard deviation using a calculator

Sample Size, n: 15

Mean= ∑ x/n = x`=: 7788.8

∑ x/n= 116832/15

St Dev, s.d(n-1) : 1002.4307

6) Test Statistic: student's t Test with d.f = n-1 = 14

t= x`- μ/ s.d/ √n  

t= 7788.8-8000/1002.4307/√15

t= -0.816

7) The P- value for the observed t value  is 0.214083.

The result is not significant at p < 0.10. H0 is accepted.

8) The Critical value for one sided t test at α =0.1 with 14 d.f is  less than t=  -1.3406

Hence the critical region is [-∞, -1.345]

Since the calculated t -0.816  value does not fall in the critical region  [-∞, -1.345] there is not sufficient evidence to reject H0

9) Fail to Reject the Null Hypothesis

Sample does not provide enough evidence to support the null hypothesis and conclude that  the data suggest that the addition of nitrates do not  result in a decrease in the mean rate of uptake. The claim is rejected.

what is 150 divided by 625 step by step

Answers

Answer:

150 dived by 625 is 0.24 I'm not sure how to explain it

In the drawing below, line h is parallel to line k.

What is the value of y?

A. 135

B. 15

C. 35

D. 145

Answers

Answer:

D. 145

Step-by-step explanation:

the lines are parallel, so you can set the two expressions equal to each other:

2x + 5 = 3x - 10

x - 10 = 5

x = 15

then plug in x to the angle next to y: 2(15) + 5 = 35°

180 - 35 = 145°

please help me I will give a brainlist​

Answers

Answer:

I think this is helpful .

A file that is 242 megabytes is being downloaded. If the download is 13.2% complete, how many megabytes have been downloaded? Round your answer to
the nearest tenth.

Answers

Answer:

31.9 mb

Step-by-step explanation:

242 is the total amount of megabytes in this situation so times 242 by .132 is equal to 13.2% of the total amount of megabytes

Lucas and Tayvan can paint a house in 1 hour working together. If Tayvan works alone, he can paint the house in 1.5 hours. How long would it take Lucas to complete the job on his own?

Answers

Answer:

1 hour

Step-by-step explanation:

no explanation its common sense lol

Lucas can complete the work on his own in 3 hours if Lucas and Tayvan can paint a house in 1 hour working together. If Trayvon works alone, he can paint the house in 1.5 hours.

What is a fraction?

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

It is given that:

Lucas and Tayvan can paint a house in 1 hour working together. If Trayvon works alone, he can paint the house in 1.5 hours.

Let x be the time that took by Lucas to complete the job on his own

From the question:

1/x + 1/1.5 = 1/1

Because Trayvon can paint the house in 1.5 hours

After solving the above equation:

1/x = 1 - 1/1.5

1/x = (1.5-1)/1.5

1/x = 0.5/1.5

x = 1.5/0.5

x = 3 hours

Thus, Lucas can complete the work on his own in 3 hours if Lucas and Tayvan can paint a house in 1 hour working together. If Trayvon works alone, he can paint the house in 1.5 hours.

Learn more about the fraction here:

brainly.com/question/1301963

#SPJ2

Find the volume of the solid generated by revolving the shaded region about the given axis.

About the y-axis

Choices:
21π
49π
(21/2)π
42π

Answers

Answer:

nice man! its good

I really need help with this!!


Which expression is equivalent to (7x-5) - (3x - 2)?

A. 10x-7
B. 10x-3
C. 4x-7
D. 4x-3

Answers

I think it is answer D
i think the answer is d good luck

What's the perimeter of rectangle DEFG, shown?
O A) 28
B) 34
C) 40
OD) 17

Answers

where is the rectangle

Karen has 3 1/4 feet of ribbon she's uses 1 3/4 feet to wrap gifts

Answers

what is the question asking? all you said was that Karen has 3 1/4 feet of ribbon and she uses 1 3/4 feet to wrap gifts

Please help me! This is due tomorrow and I really need some help! Thank you.

Answers

Answer:

A

Step-by-step explanation:

3.5 x 1 x 1.4 = 4.9

Answer:

A. 4.9ft³

Step-by-step explanation:

V= LxWXH

V= 3.5x1.4x1= 4.9

V= 4.9ft³

Please help me with my math

Answers

Answer:

47.5 yd²

Step-by-step explanation:

Area = 1/2 ( base x height )

Area = 1/2 ( 19 x 5 )

Area = 1/2 ( 95 )

Area = 47.5 yd²

lliana is painting a picture. She has green, red, yellow, purple, orange, and blue paint. She wants her painting to
have four different colors.
If order does not matter, in how many ways can she pick four colors if green must be one of them?
4
6
10
15
O

Answers

Answer:

6 is correct

So Iliana has 6 ways to pick for colors, if green is not one of them. :)

6! Sorry if I’m wrong I tried

o
Which statement is not true?
1. ET is perpendicular to plane BAD.
2. ET is perpendicular to plane FAB.
3. ET is perpendicular to plane CAD.
4. ET is perpendicular to plane BAT.



Answers

Answer:

4.) ET is perpendicular to plane BAT

Step-by-step explanation:

Use the Quadratic Formula to solve the equation x2 + 4x = - 11.

Answers

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

What is the answer to this

Answers

When reflecting the xyz over the X-axis
Move y over 6 units to the right
In which you will get
(2,4)

what is a decimal that is equivalent to the fraction 59/100?​

Answers

Answer:

0.59

Step-by-step explanation:

Answer:

The decimal equivalent to 59/100 is 0.59

Step-by-step explanation:

100 fits into 59: 0.59 times

I NEED HELP ASAP PLS HELP!

Answers

You: 3, 6, 9, 12

Friend: 4, 8, 12, 16

Your friend sells 16 tickets.

Answer:

you is 5 and friend is 12 and 16 your friend sells 16 tickets

Step-by-step explanation:

What are the solution(s) to the quadratic equation 40 - x2 = 0?
O x = +2/10
O x = +4/10
O x = +2/5
x = +4V5

Answers

Answer:

±2sqrt(10)

Step-by-step explanation:

40 - x^2 = 0

Add x^2 to each side

40 -x^2 + x^2 = x^2

40 =x^2

Take the square root of each side

±sqrt(40) =sqrt(x^2)

±sqrt(4)sqrt(10) =x

±2sqrt(10) =x

John D. Rockefeller died in 1937. At the time of his death, Rockefeller had accumulated $1400 million, which was equal to one sixty-fifth of the gross national product of the United States at that time†. What was the U.S. gross national product in 1937?

Answers

Answer: 91,000,000,000

HELP!!!!! Find each missing length to the nearest tenth.

Answers

where is the missing length tho? they are all filled in
Other Questions
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