A person drove at 24 miles per hour for 4 hours, then at 20 miles per hour for 2 hours. How far did the person drive in all?

Answers

Answer 1

Answer: the person traveled 136 miles

Answer 2

Answer: 24+20=44
20+20=40÷4=44

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(x^-4)^5 please simplify the expression

9+5(4x+4) what's the answer

Answers

20x+29 Parenthesis are supposed to be solved first, but due to the variable (x) i multiplied 5 (distributive property) leaving the 9 alone ... you just add it to the equation .....which you can't find x because you don't know what the whole equation equals to.

9 + 5(4x + 4)
9 + 5(4x) + 5(4)
9 + 20x + 20
9 + 20 + 20x
29 + 20x

The following data set shows a random selection of delivery drivers from a Chinese delivery restaurant. Driver ID Age, years Gender Car Average Time Average Distance, miles 543 19 Male Truck 10 min 36 sec 8.2 228 29 Male Van 9 min 7.1 711 22 Female SUV 11 min 24 sec 7.4 252 17 Female Sports car 6 min 17 sec 6.8 Which of the following variables are categorical?

Answers

In the provided data, the categorical variables are gender and car.

In the given data set, the categorical variables are characteristics that can be divided into distinct categories or groups, without considering numerical values.

1. **Gender:** Gender is a categorical variable as it consists of distinct categories such as Male and Female, indicating the driver's gender.

2. **Car:** The type of car each driver uses is also a categorical variable. It includes categories like Truck, Van, SUV, and Sports car, representing different types of vehicles.

These variables are categorical because they represent qualitative characteristics without numerical significance. They provide information about the driver's gender and the type of car they use for delivery.

In contrast, numerical variables such as Age, Average Time, and Average Distance are quantitative and represent measurable quantities.

Age is measured in years, and both Average Time and Average Distance are measured in minutes and miles, respectively. Numerical variables can be further classified into discrete (countable) or continuous (measurable on a scale) variables, but they are not considered categorical as they represent quantities rather than categories.

For more such questions on categorical variables

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A school basketball team spent 44% of its fundraiser earnings to purchase new uniforms. What fraction of the fundraiser earnings was spent on new uniforms?

Answers

Answer:

11/25 of the earnings were spent on new uniforms.

Step-by-step explanation:

Hope this helps! :)

A regular hexagon has a side length of 6 units.The hexagon can be divided into six congruent and triangles.

Answers

Answer:true

Step-by-step explanation:

Because the hexagon is regular.

between 6am and 10am re temperature rose by 5 fahrenheit between 10am and 2pm the temperature rose by 6 fahrenheit between 2pm and 6pm the temperature rose by 0 celsius would you be able to tell how much the temperature rise since 6am why or why not

Answers

Yes, we can able to know the temperature difference from 6 AM to 6 PM.
We need to convert all the temperature into one unit.

6 AM - 10 AM ---> 5 F = -15 C
10 AM - 2 PM ---> 6 F = -14.44 C
2 PM - 6 PM ---> 0 C.

So the total increase is 15C

Discriminant of 9x^2+12x+4=0

Answers

$the\ discriminant\ of\ ax^2+bx+c=0:\ \ \ \ \Delta=b^2-4\cdot b\cdot c \n---------------------------\n9x^2+12x+4=0\ \ \ \Rightarrow\ \ \ \Delta=12^2-4\cdot9\cdot4=144-144=0\n\n\Delta=0\ \ \ \Rightarrow\ \ \ x_0=- (b)/(2a) =- (12)/(2\cdot9) =- (2\cdot2\cdot3)/(2\cdot3\cdot3)= - (2)/(3) \n\nAns.\ The\ discriminant\ is\ \Delta=0$

$9x^2+12x+4=0\n\n(3x)^2+2\cdot3x\cdot2+2^2=0\n\n(3x+2)^2=0\iff3x+2=0\n\n3x=-2\ \ \ /:3\n\nx=-(2)/(3)\n\n-------------------------------\n\n(a+b)^2=a^2+2ab+b^2$

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