susan ran 2.75 miles in 1/4 of an hour how fast was she traveling

Answer: 3x-5

Step-by-step explanation:

9x-5(-6x)

9x-5-6x

3x-5

Answer:

15x - 5

Step-by-step explanation:

We have the equation 9x - 5 - (-6x) and are asked to solve it.

We cannot combine 9x and 5 because they have a variable difference, with 9 having x as its variable and 5 having no variable. What we can do is distribute the minus sign to the right of 5 to (-6x), lets do as said :

9x - 5 - (-6x)

Two negatives make a positive, therefore :

9x - 5 + 6x

Since 9x and 6x have the same variable ending, we can combine them, do as followed :

9x - 5 + 6x

9x + 6x

15x - 5

Answer:

The answer is C

Step-by-step explanation:

Answer:

8, 0

Step-by-step explanation:

You need to add 4 more blue marbles, then there will be 8 blue marbles and the probability of drawing a blue one will be 8 out of 16 (the total of marbles)

And

8/16 = 1/2

Answer:

s 7 + 46  = 49 is s  =  7 √ 3 or s  =  1.16993081 …

Step-by-step explanation:

Exact Form:

s  =  7 √ 3

Decimal Form:

s  =  1.16993081 …

The hexadecimal system numbering system is base 16; in other words, 16 numerals are used to express any given number.

In this system, 16 numerals are used to represent any given number. The numerals used in this system are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F, where A represents 10, B represents 11, and so on, up to F, which represents 15.

This system is commonly used in computer science, as it is more compact than the decimal system, and allows for easier conversion between binary and decimal systems. In the hexadecimal system, each digit represents a power of 16, just as each digit in the decimal system represents a power of 10.

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Answer:

500 grams

Step-by-step explanation:

will be the answer

hp it helps you

Answer:

0.005

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

Answer:

Slope is 1/4

Point-slope is y−8=1/4⋅(x−4)

Slope intercept is y=1/4x+7

Step-by-step explanation:

Considering the given functions, we have that:

a. The expense function in terms of p is: E = -720p + 20,400.

b. At a price of $15, the demand is of 7200.

c. The cost to produce the 7200 widgets is of $58,200.

The demand function is given as follows:

q = -120p + 9000.

The expense function is:

E = 6q + 15,000.

In terms of p, the expense function is given as follows:

E = 6(-120p + 900) + 15,000

E = -720p + 20,400.

At a price of $15, the demand is calculated as follows:

q = -120 x 15 + 9000 = 7200.

The cost to produce the 7200 widgets is calculated as follows:

E = 6(7200) + 15,000 = $58,200.

Both numeric values were found replacing the single instance of the variable by the inputs.

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Answer:

x  ≤  6

Step-by-step explanation:

2x - 1 ≤ x + 5

Subtract x from each side

2x-x - 1 ≤ x-x + 5

x - 1 ≤  5

Add 1 to each side

x - 1+1 ≤  5+1

x  ≤  6

Answer:

x \(\leq\) 6

Step-by-step explanation:

Solve for  x  by simplifying both sides of the inequality, then isolating the variable.  Inequality Form:  x  ≤  6

Answer:D. 1

Step-by-step explanation:

Answer:

good luck bro these types of questions  are so annoying im doing one now and is the question from mathswatch

Step-by-step explanation:

Answer:

Account 1 has the highest effective annual interest rate (0.042666142)

Step-by-step explanation:

Hi, to answer this question we have to apply the Effective Annual Interest Rate formula:  

EAIR = [(1+r/n)^n ]-1

Where:

r = nominal interest rate

n = number of periods

If interest is compounded annually, then n = 1; if semi-annually, then n = 2; quarterly, then n = 4; monthly, then n = 12

SO:

Account 1: Interest is compounded quarterly at an annual rate of 4.20%.  

EAIR = [(1+r/n)^n ]-1 = [(1+(4.20/100)/4)^4 ]-1 = 0.042666142

Account 2: Interest is compounded monthly at an annual rate of 4.15%.  

EAIR = [(1+r/n)^n ]-1 = [(1+(4.15/100)/12)^12 ]-1 =0.042298535

Account 3: Interest is compounded semiannually at an annual rate of 4.10%

EAIR = [(1+r/n)^n ]-1 = [(1+(4.10/100)/2)^2]-1 = 0.04142025

Account 4: Interest is compounded annually at a rate of 4.25%.

EAIR = [(1+r/n)^n ]-1 = [(1+(4.25/100)/1)^1 ]-1 = 0.0425

Since:

0.042666142 (1) < 0.0425 (4) < 0.042298535(2) <0.041420258(3)

Account 1 has the highest effective annual interest rate 0.042666142

The coffee shop owner does not have sufficient evidence to conclude that the distribution of sales is proportional to the number of facings at a 5% level of significance.

What is proportion ?

A proportion refers to the number or fraction of individuals or items that exhibit a particular characteristic or have a certain attribute, relative to the total number or sample size being considered. It is often expressed as a ratio or percentage.

To test whether the distribution of sales is proportional to the number of facings, we can use the chi-squared goodness of fit test. The null hypothesis for this test is that the observed data follows a specific distribution (in this case, a proportional distribution), while the alternative hypothesis is that the observed data does not follow that distribution.

To conduct the test, we first need to calculate the expected frequency for each category assuming a proportional distribution. We can do this by multiplying the total number of sales (610) by the proportion of facings for each brand:

Starbucks: 610 x 0.3 = 183

Dunkin: 610 x 0.4 = 244

Peet's: 610 x 0.2 = 122

Other: 610 x 0.1 = 61

Next, we calculate the chi-squared statistic using the formula:

χ² = Σ((O - E)² / E)

where O is the observed frequency and E is the expected frequency. The degrees of freedom for this test are (k-1), where k is the number of categories. In this case, k = 4, so the degrees of freedom are 3.

Using the observed and expected frequencies from the table, we get:

χ² = ((130-183)²/183) + ((240-244)²/244) + ((85-122)²/122) + ((155-61)²/61) = 124.36

Looking up the critical value of chi-squared for 3 degrees of freedom and a significance level of 0.05, we get a value of 7.815. Since our calculated χ² value of 124.36 is greater than the critical value of 7.815, we reject the null hypothesis and conclude that the observed distribution of sales is not proportional to the number of facings.

Therefore, the coffee shop owner does not have sufficient evidence to conclude that the distribution of sales is proportional to the number of facings at a 5% level of significance.

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Answer:

x = 3

Step-by-step explanation:

y = 5x

x + y = 12

x + 5x = 12 (substitute 5x in the place of y)

6x = 12

x = 12/6

x = 3

Answer:

Step-by-step explanation:

y=5x

+5(y)=(12-x)+5  which distributing is +5y= +60-5x

y=5x

+5y=+60-5x

6y=60

y=10

10=5x

x=2

Answer:

i've inserted 3 pictures. make sure you see each one of them :)

Step-by-step explanation:

Answer:

x<−1orx>2

Step-by-step explanation:

Answer:

y = 2x2

y + 3x = 2x2 – 8

Step-by-step explanation:

The equations that are quadratic in nature are -

A quadratic equation is a equation that is of the form -

y = f{x} = ax² + bx + c.

Given are the set of equations.

A quadratic equation is a equation of degree 2. The equation with degree 2 are -

Therefore, the equations that are quadratic in nature are -

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Answer:

I think it is Brackets

Step-by-step explanation:

Good luck

Answer:

it was i believe .1

Step-by-step explanation:

.1 bc i had done it yesterday and for some reason the girl deleted her answer

Answer:

r=.5 or 1/5

Step-by-step explanation:

The average of y is given x in the simple regression model. The correct answer is OC. Hyjx = Bo +Byx.

A regression model is a statistical method for estimating the relationship between one or more independent variables and a dependent variable (also known as the response variable) (also called the explanatory variables or predictors). The primary goal of regression analysis is to forecast the value of the dependent variable based on the independent variables' values.

In a simple linear regression model, the equation is y = Bo + B1x + e, where Bo is the intercept and B1 is the slope. The average of y given x is represented by the expected value of y given x, which is E(y|x) = Bo + B1x. This equation represents the regression line, which is a line that best fits the data points in the scatter plot.

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Answer:

They are both right

Step-by-step explanation:

Adding 3 and multiplying 3 to the term number is the same thing

Answer:

Step-by-step explanation:

area =l^2

=7^2

=49 km^2

Answer:

Positive Linear Association

Step-by-step explanation:

It was right on Khan

Answer:

A.

Step-by-step explanation:

did it on khan academy

Answer:

10 miles

Step-by-step explanation:

let the number of miles be x

Step one:

given data

Carl's taxi

initial charge= $2

fee per mile= 15 cent = $0.15

total =0.15x+2----------1

Can car

initial charge= $1.5

fee per mile= 20 cent = $0.2

total =0.20x+1.5-------------2

Step two:

equate 1 and 2 to find x

0.15x+2=0.2x+1.5

0.15x-0.2x=1.5-2

-0.05x=-0.5

x=0.5/0.05

x=10

Answer:

15.625

Step-by-step explanation:

2/5^-3 is 15.625

Answer:

14 yd²

Step-by-step explanation:

4 • 7 = 28

Since this is a triangle you divide the answer by 2

28/2 = 14

14 yd²

Hope this helps dude