A family buying school clothes for their two children spends $48.46 at one store,$ 41.92 at another, and $22.97 at a third store. What is the total amount spent at the three stores?

Answers

Answer 1

Answer:

113.35

Step-by-step explanation:


Related Questions

find two numbers a and b for which a+2b=100 and the product ab is maximized

Answers

a : 100
b : 50

explanation : subtract 2b from both sides

While doing an article on the high cost of college education, a reporter took a random sample of the cost of new textbooks for a semester. Her sample consisted of 20 students with a mean of $212.45 and a standard deviation of $38.92. A. Find the 99% confidence interval estimate of the true mean textbook cost for the semester based on her sample. Assume the cost of new textbooks is normally distributed.B. Based on part a, is an average cost of $200 for a semester a likely value for the population mean? Why or why not?

Answers

Answer:

The answer is below

Step-by-step explanation:

Given that:

mean (μ) = $212.45, standard deviation (σ) = $38.92 and sample size (n) = 20 students.

a) Confidence (C) = 99% = 0.99

α = 1 - C = 1 - 0.99 = 0.01

α/2 = 0.01/2 = 0.005

The z score of α/2 is the same as the z score of 0.495 (0.5 - 0.005) which is equal to 2.576. This means that Z(α/2) = 2.576

The margin of error (E) is given as:

[tex]E=Z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} } \\\\Substituting:\\\\E=2.576*\frac{38.92}{\sqrt{20} } \\\\E=8.7[/tex]

The confidence interval = (μ ± E) = (212.45 ± 8.7) = (203.75, 221.15)

Hence the 99% confidence interval is between 203.75 and 221.15.

b) The population mean is the same as the sample mean. Hence the population mean = $212.45

Increase £15837.77 by 8.5%

Answers

Answer:

32,100 Millimeters

3,210 Centimeters

3.21 Decameters

Hope It Helps

Step-by-step explanation:

2. O

Mia buys ink at the office supply store for a business.

She buys 3 printer cartridges, and the sales tax is 7%. Write an expression

to represent the total cost of ink supplies in two different ways.

Answers

Answer:

The  total cost of the ink supplies can be represented  in two different ways, as follows:

a. 3p (1+r)

b. p * (1+ r) * 3

Step-by-step explanation:

a) Data and Calculations:

Number of printer cartridges bought = 3

Sales tax rate = 7%

The total cost can be represented as:

Total cost = 3p (1+r)

where p = the price of a printer cartridge

and r = the sales tax rate

Alternatively, the total cost can be represented as:

Total cost = p * (1+ r) * 3

b) Whichever expression is used, the total cost derived will remain the same.  The first expression includes the sales tax in the total cost, while the second expression includes the sales tax in the cost of the unit before arriving at the total cost.

Answer:

3c+3c(0.07)

Step-by-step explanation:

Please solve it quickly! thanks!

Answers

Answer:

2a - 8

General Formulas and Concepts:

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define

(a - 3) + (a - 5)

Step 2: Simplify

Combine like terms (a):                    2a - 3 - 5Combine like terms (Z):                    2a - 8

1/3 + a =5/4
what does a equal ​

Answers

I think it’s a=11/12

Answer:

the answer to this is a = 11/12

Step-by-step explanation:

Find the value of x that will make A||B.
А
5X
(4x + 12
x
< = [?]

Answers

Answer:

x=12

Step-by-step explanation:

Lines A and B are parallel, with a transversal passing through them.

The properties of two parallel lines and a transversal tells us that angles 5x and 4x+12 must be equal, because they are a pair of alternate exterior angles.

To solve for x, we do 5x=4x+12

Subtract 4x on both sides

x=12

Answer: 12

Step-by-step explanation:

can someone help me out with this problem?...REAL ANSWERS ONLY ​

Answers

Three quarts bc the area of the wall is 300ft squared and each quart covers 100

NEGATIVE INTEGER LESS THAN -5

Answers

Answer:

-6

Step-by-step explanation:

-6, -7, -8... and so on are less than -5

Answer:

-6, -7, -8... etc.

Step-by-step explanation:

BEST ANSWER WILL BE MARKED BRAINIEST AND AWARDED HIGHEST POINTS\

Give an example of translation symmetry in nature, like when you take a walk outside. (do not use honey hives as an example.)

Answers

One example I've seen many times when I walk in the park, or just outside my house, is the pattern on the back of a moth. Here's an example of one. I hope this helps.

Someone help please!!!

Answers

Answer:

y intercept = -5

slope= 4

equation: y = 4x - 5

EXPLANATION:

FIRST, you must write the formula for a linear graph , which is y = m(x) + c

where y is any y component and x is it's corresponding x component , m is the gradient or slope and c is the constant or y intercept.

SOLUTION:

y = mx + c

finding the gradient (m)

m = y2 - y1

x2 - x1

=( (-1)-(-5) ) ÷ (1-0)

= -1+5 ÷ 1

= 4

Therefore, the slope is 4

finding the y intercept.

y = 4x + c

in the above equation, I substituted the value I had for the slope or the gradient or m.

SO NOW IM ABOUT TO FIND C

TO FIND C, YOU MUST FIRST PICK A CORRESPONDING Y AND X COMPONENT.

I CHOOSE MY Y = 3 and X = 2

Now I'm going to substitute those values into the formula.

(3) = 4(2) + C

since it's an equation with one variable, no need for simultaneous equations.

3 = 8 + c

3-8 = c

-5 = c

SO THATS HOW WE ARRIVED AT -5 AND 4.

WITH THAT, the equation of the line is y = 4x - 5.

I HOPE IT WAS HELPFUL.

WILL MARK BRAINLIEST! What are the coordinates of point P?


A. (Negative 4.5, negative 2)

B. (Negative 2, negative 4.5)

C. (2, negative 4.5)

D. (4.5, negative 2)

Answers

B negative 2 and negative 4.5

I have a past due balance of $87.50 and my new charges are $75.00. I was also charged a late fee of 15% of my past due balance. What is my new total? Your new total is

Answers

Answer:

$186.30

Step-by-step explanation:

87 + 75 = 162

162 + 15% = 186.3

Answer: your new total is $162.65

Step-by-step explanation:

it added 87.50 + 75.00 + 15% and got $162.65

How do you find lower class limit

Answers

Answer:

Its the upper limit and lower limit of the class

The length of a beige is 500 miles if 1 inch represent 25 miles what is the length of the bridge ?

Answers

Answer:

20 inch

Step-by-step explanation:

500 divided by 25 is 20.

(b) Given one of the zeros of equation 2x³ - 23x + 78x +k=0 is 3/2
Find value k, hence,
solve the equation.​

Answers

Answer:

k = -55 x - 2 x^3

Step-by-step explanation:

Solve for k:

2 x^3 + 55 x + k = 0

Hint: | Solve for k.

Subtract 2 x^3 + 55 x from both sides:

Answer: k = -55 x - 2 x^3

3/2 is not a Root of this equation - see below, those are the Roots/Zeros.

Solve for x:

2 x^3 + 55 x + k = 0

Divide both sides by 2:

x^3 + (55 x)/2 + k/2 = 0

Change coordinates by substituting x = y + λ/y, where λ is a constant value that will be determined later:

k/2 + 55/2 (y + λ/y) + (y + λ/y)^3 = 0

Multiply both sides by y^3 and collect in terms of y:

y^6 + y^4 (3 λ + 55/2) + (k y^3)/2 + y^2 (3 λ^2 + (55 λ)/2) + λ^3 = 0

Substitute λ = -55/6 and then z = y^3, yielding a quadratic equation in the variable z:

z^2 + (k z)/2 - 166375/216 = 0

Find the positive solution to the quadratic equation:

z = 1/36 (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)

Substitute back for z = y^3:

y^3 = 1/36 (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)

Taking cube roots gives (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) times the third roots of unity:

y = (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) or y = -((-1)^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3) or y = ((-1)^(2/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3)

Substitute each value of y into x = y - 55/(6 y):

x = (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)/6^(2/3) - 55/(6^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)) or x = -(55 (-1)^(2/3))/(6^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3)) - ((-1)^(1/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3) or x = (55 ((-1)/6)^(1/3))/(sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3) + ((-1)^(2/3) (sqrt(3) sqrt(27 k^2 + 332750) - 9 k)^(1/3))/6^(2/3)

Bring each solution to a common denominator and simplify:

Answer: x = (6^(1/3) (sqrt(81 k^2 + 998250) - 9 k)^(2/3) - 55 6^(2/3))/(6 (sqrt(81 k^2 + 998250) - 9 k)^(1/3)) or x = -((-1)^(1/3) ((sqrt(81 k^2 + 998250) - 9 k)^(2/3) + 55 (-6)^(1/3)))/(6^(2/3) (sqrt(81 k^2 + 998250) - 9 k)^(1/3)) or x = ((-1)^(1/3) ((-1)^(1/3) (sqrt(81 k^2 + 998250) - 9 k)^(2/3) + 55 6^(1/3)))/(6^(2/3) (sqrt(81 k^2 + 998250) - 9 k)^(1/3))

I need help please!!! I will give five stars and Brainiest for correct answer.

Answers

Answer:

in my thought 4isthe answer

A student received a score of 38/50 on a math test and wants to convert the points into percentages.

An important step in the process involves dividing the

number of incorrect answers by the number of correct answers.
number of correct answers by the number of incorrect answers.
total number of questions by the number of correct answers.
number of correct answers by the total number of questions.

Answers

9514 1404 393

Answer:

  number of correct answers by the total number of questions

Step-by-step explanation:

The first step in the process is to express the score as a fraction. That has already been done here, but apparently, we're to say what that fraction is.

The required fraction that must be found as a first step is found by dividing the ...

  number of correct answers by the total number of questions

Answer:

 number of correct answers by the total number of questions

Step-by-step explanation:

source : m4thw4y

Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?

more-efficient extraction techniques
better control of fusion reactions
stronger-pumping wells
thicker shielding around the reactor

Answers

Answer:

Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?

A.) more-efficient extraction techniques

Step-by-step explanation:

To curb these detrimental effects, it is required to provide more-efficient extraction techniques when using uranium as a fuel.

What are environmental pollutants?

Environmental pollutants are substances released into the natural environment that cause negative effects, such as damaging health or inflicting various sorts of damage.

Uranium mining has far-reaching consequences, polluting the environment with radioactive particles, radon gas, water-borne pollutants, and higher concentrations of radiation levels.

To curb these detrimental effects and to improve the possibility of damage caused to the environment, it is required to provide more-efficient extraction techniques when using uranium as a fuel.

Learn more about environmental pollutants here:
https://brainly.com/question/9420026

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Reid earns $9.00 per hour painting furniture and has already earned $22.50. The number of hours, x, for which Reid painted can be found using the equation 22.50=9x.



How many hours did Reid paint?

Answers

Answer:

2.5 hours or 2 hours and 39 min

Step-by-step explanation:

22.50/9

An overcoat is $2,070.How much do you need to pay if you get a 15% discount?

Answers

Answer:

You need to pay $1,759.50 if you get a 15% discount.

Step-by-step explanation:

100%-15%=85%

0.85x2,070=$1,759.50

What is the length of the line segment that joins (3, -2) and (3, 9)

Answers

Step-by-step explanation:

[tex] \sqrt{3 - 3} + \sqrt{9 - - 2} [/tex]

[tex] \sqrt{0} + \sqrt{11} [/tex]

[tex] \sqrt{11} [/tex]

Thats the answer of distance

A group of 59 randomly selected students have a mean score of 29.5 with a standard deviation of 5.2 on a placement test. What is the​ 90% confidence interval for the mean​ score, ​, of all students taking the​ test?

Answers

Answer:

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 29.5

Standard deviation r = 5.2

Number of samples n = 59

Confidence interval = 90%

z-value (at 90% confidence) = 1.645

Substituting the values we have;

29.5+/-1.645(5.2/√59)

29.5+/-1.645(0.676982337100)

29.5+/-1.113635944529

29.5+/-1.11

= ( 28.39, 30.61)

Therefore, the 90% confidence interval (a,b) =( 28.39, 30.61)

PLEASE HELP MEEEEEE I REALLY NEED HELP WITH THISSSSSSSSS QUESTION PLEASE I NEEEEDDD HELPPPP IM BEGGGING YOUUUU

Answers

Answer:

volume of figure = 74 cm³

if f is a signum function then f(100) =​

Answers

Answer:

787

Step-by-step explanation:

i took the test

What is 24 x 1/6 as a fraction

Answers

Simple calculator answer

The solution of the expression (24 x (1/6) is ( 4 / 1 ).

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The expression will be calculated as:-

E =  24 x 1/6

E = 24 / 6

E = 4 / 1

Hence, the solution of the given expression is ( 4 / 1).

To know more about expression follow

https://brainly.com/question/723406

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The table lists selected values of Sam's walking speed, in kilometers per hour (km/h), and his corresponding
pulse, in beats per minute (bpm). There is a linear relationship between Sam's speed, x, and his pulse, f(x).
Which of the following equations describes f(x)?

Answers

9514 1404 393

Answer:

  (C) f(x) = 5x +57

Step-by-step explanation:

Heart rate increases as speed increases, so only equations with a positive x-coefficient are of interest. It is pretty easy to see that ...

  f(x) = x+57

doesn't give ...

  f(4) = 77

However, the other reasonable choice is ...

  f(x) = 5x +57

which does give f(4) = 77.

please help meeee I need help

Answers

Answer:

Option 1

Step-by-step explanation:

Answer:

Option 2.

Step-by-step explanation:

The slope is negative, so it goes down from left to right.

Finish the following table for the given function with x as the independent variable. x 10 10 15 10 15 Ax) = V100- x

a. 95, 90, 85
b. 9.75, 9.49, 9.22
C. 9.75, 9.22, 9.49
d. 10, 9,8​

Answers

Answer:

Option (b) is true.

Step-by-step explanation:

Given the function

[tex]f\left(x\right)=\sqrt{100-x}[/tex]

plug in x = 5 in the function

[tex]f\left(5\right)=\sqrt{100-5}[/tex]

[tex]\:f\left(5\right)=\sqrt{95}\:\:\:\:[/tex]

[tex]f(5) = 9.75[/tex]

plug in x = 10 in the function

[tex]f\left(10\right)=\sqrt{100-10}[/tex]

[tex]\:f\left(10\right)=\sqrt{90}\:\:\:\:\:[/tex]

[tex]\:f\left(10\right)=9.49[/tex]

plug in x = 15 in the function

[tex]f\left(10\right)=\sqrt{100-15}[/tex]

[tex]\:f\left(10\right)=\sqrt{85}\:\:\:\:\:[/tex]

[tex]\:\:f\left(15\right)=9.22[/tex]

Thus, the table will be:

x              f(x)

0              10

5              9.75

10             9.49

15             9.22

Therefore, option (b) is true.

Help PLZ I am failling math​

Answers

there number rounds to 3000 so divide that by 11 and round up your answer
have a good day!!
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