The average number of people per square kilometer in California is [tex]6.22 \times 10^1.[/tex]
To find the average number of people per square kilometer in California, we divide the total population by the land area.
Given:
Population of California = [tex]2.52 \times 10^7[/tex] people
Land area of California = [tex]4.05 \times 10^5 km^2[/tex]
Calculate the population density.
Population density = Population / Land area
Population density = [tex](2.52 \times 10^7) / (4.05 \times 10^5) people/km^2[/tex]
Divide the numbers and simplify.
Population density = (2.52 / 4.05) x 10^(7-5) people/km^2
Population density = [tex]0.622 \times 10^2 people/km^2[/tex]
Rewrite in scientific notation.
Population density = [tex]6.22 \times 10^1 people/km^2[/tex]
So, the average number of people per square kilometer in California is [tex]6.22 \times 10^1[/tex].
five added to 2 times a number is equal to 7 less than 4 times the number: what is the number?
Answer:
6
Step-by-step explanation:
Five added to 2 times a number is equal to 7 less than 4 times the number
Five is added to 2 times a number 2x + 5
7 less than 4 times the number 4x - 7
Put them together
2x+5=4x-7
2(6)+5=17
4(6)-7=17
x=6
A local hamburger shop sold a combined total of 605 hamburgers and cheeseburgers on Friday. There were 55 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Friday?
The local hamburger shop sold 275 hamburgers on Friday, which was determined by setting up a system of equations to find the individual sales of hamburgers and cheeseburgers based on the given total sales and difference in numbers.
The question asks us to determine how many hamburgers were sold on a specific day, given the total number of hamburgers and cheeseburgers and the difference in their individual sales numbers. Let's denote the number of hamburgers sold as H and the number of cheeseburgers as C. We are told that the total number of burgers sold is 605, so we can write the equation H + C = 605. We also know there were 55 more cheeseburgers sold than hamburgers, giving us the equation C = H + 55. To find the number of hamburgers sold, we need to solve these two equations simultaneously.
Substituting the second equation into the first, we get:
H + (H + 55) = 6052H + 55 = 6052H = 605 - 552H = 550H = 550 / 2H = 275Therefore, the hamburger shop sold 275 hamburgers on Friday.
a carp can travel at a speed of 3 7/10 miles per hour . At this rate , how far can a carp travel in 2 ½ hours?
Chan her Bought 3.4 pounds of coffee that cost 6.95 per pound how much did you spend on coffee
A number minus 6 equals 12
use the five step plan to solve the word problem. Show all five steps in youre response. doug is twice anns age. doug is 34 years old. how old is ann?
What is the distance between point A (−1, 3) and point B (−7, 3) ?
1 units
3 units
6 units
8 units
Answer:
The distance between point A and the point B is:
6 Units.
Step-by-step explanation:
The Cartesian plane is known as 2 perpendicular number lines between them, one horizontal and one vertical, which are cut at a point called the origin.
And the coordinates are given by the values of X and Y (x, y)
Where X are horizontal values and Y are vertical values.
By placing the point (−1, 3) and the point (−7, 3) we realize that two values of Y are exactly the same on the line.
But the values of X are different from each other, so the units of the distance between them are counted.
-7U - (- 1U) = -6U
But since the distance units cannot be negative then the answer is 6 units of distance.
4 2/5+k=−3 2/11 solve the equation
To solve for k in the equation 4 2/5 + k = -3 2/11, we convert the mixed numbers to improper fractions, find a common denominator, and perform algebraic operations to isolate k. The solution is k = -417/55.
The student is asking to solve the equation 4 2/5 + k = -3 2/11 for k. To solve this, you would convert the mixed numbers into improper fractions, then isolate the variable k by performing algebraic operations.
Steps to Solve for k:
Convert mixed numbers to improper fractions: 4 2/5 becomes 22/5 and -3 2/11 becomes -35/11.Write the equation with improper fractions: 22/5 + k = -35/11.Find a common denominator: In this case, the common denominator for 5 and 11 is 55.Write both fractions with the common denominator: 22/5 becomes 242/55, and -35/11 becomes -175/55.Rewrite the equation: 242/55 + k = -175/55.Subtract 242/55 from both sides to isolate k: k = -175/55 - 242/55.Combine the fractions: k = (-175 - 242) / 55.Calculate k: k = -417/55, which can be simplified if necessary.By following these steps, we can find that the value of k is -417/55. We have used algebraic operations, improper fractions, and common denominators to solve the equation.
What is the square root of 0.81
The legs of a right triangle are 3 units and 8 units. What is the length of the hypotenuse? Round your answer to the nearest hundredth. A.8.54 B.9.54 C.11.00 D.24.00
Answer:
8.54
Step-by-step explanation:
i took the test
Francisco makes $12 per hour doing part time work on Saturdays. He spends $4 on transportation to and from work. The equation y=12x-4 gives his earnings y, after transportation costs, for working x hours. Make a table for values for this situation. Please help.
In the given linear equations, we can use the equation y=12x-4 to create a table of earnings for different numbers of hours Francisco might work, taking into account his transportation costs. For example, if he does not work he loses $4 (-$4); if he works one hour he earns $8; if he works two hours he earns $20; if he works three hours he earns $32.
Explanation:In the equation y=12x-4, 'x' represents the number of hours Francisco works, and 'y' gives his earnings after transportation costs. Let's start creating a table using different values for 'x (hours)'.
For 0 hours (x=0), we substitute x into the equation to get y = 12*0 - 4 = -$4. Since Francisco can't earn negative money, we can consider this as him simply not going to work.For 1 hour (x=1), y = 12*1 - 4 = $8.For 2 hours (x=2), y = 12*2 - 4 = $20.For 3 hours (x=3), y = 12*3 - 4 = $32.So, the table would look something like this:
(0, -$4)(1, $8)(2, $20)(3, $32)This table provides four possible combinations of hours worked (x) and the corresponding earnings (y), taking into account the cost of transportation.
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30 POINTS Talia drives a bus. The function P=25h+50 represents her daily pay, in dollars, for working h hours. She picks up 45 passengers per hour. She also receives $0.20 for each passenger she picks up. The function B=45h·(0.20) represents the amount she earns for her bonus. Which function represents Talia's earnings, P, for driving h hours?
A.) P=16h+50
B.) P=34h+50
C.) P=50h+34
D.) P=20h+50
The function P=34h+50 represents Talia's earnings, P, for driving h hours. The correct option is B.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that Talia drives a bus. The function P=25h+50 represents her daily pay, in dollars, for working h hours. She picks up 45 passengers per hour. She also receives $0.20 for each passenger she picks up. The function B=45h·(0.20) represents the amount she earns for her bonus.
The total earnings will be calculated as,
TE = 25h + 50 + 45h.(0.2)
TE = 25h + 50 + 9h
TE = 34h + 50
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0.3•10^4 is it scientific notation why or why not?
No, this is not scientific notation. Scientific notation has a number multiplied by 10 to the power of something. But, that number has one digit in front of the decimal point. Since, here, there are none, this is not a number in scientific notation.
Identify a temperature colder than -7.2 F. Write an inequality that relates the temperatures. Describe their positions on a horizontal number line. (I'll give most of my points!!!)
Which equations are related equations to 13 + x = 29?
Select each correct answer.
29 + 13 = x
13=29−x
x=29−13
13−x=29
Answer:
[tex]13=29-x[/tex]
[tex]x=29-13[/tex]
Step-by-step explanation:
Given equation is [tex]13 + x = 29[/tex]
Solve the given equation for x, subtract 13 from both sides
[tex]x=16[/tex]
Now we solve each equation given for x
[tex]29 + 13 = x[/tex], x=42
[tex]13=29-x[/tex], subtract 29 from both sides
[tex]-16=-x[/tex] divide both sides by -1
x=16
[tex]x=29-13[/tex], x= 16
[tex]13-x=29[/tex] subtract 13 from both sides
[tex]-x=16[/tex] divide both sides by -1
x=-16
Option B and C gives the same solution x=16
Add. Write your answer as a fraction in simplest form.
−4 5/9 + 8/9=
SHOW YOUR WORK
given a right cone with radius r and slant height s, what does the formula pi rs represent
The formula πrs represent the lateral surface area of the cone.
Step-by-step explanation:Lateral surface area--
The lateral surface area of a solid ( i.e. a three dimensional object) is the area of all the sides of the solid excluding the area of the base as well as top of the solid.
If r is the radius of the cone and s is the slant height of the cone then the lateral surface area of the cone is given by the formula:
[tex]Lateral\ surface\ area=\pi rs[/tex]
Write 0.000000874 in scientific notation please. (SO CONFUSING :/)
On the first play of the game, the Wildcats gained 8 yd. What integer represents a gain of 8 yd?
Using the numbers 1,2,3,4 only once and the operations + or x as many times as you like, write an expression that evaluates to 16. Use this expression and any combination of those symbols as many times as you like to write an expression that evaluates to 816.
Final answer:
To obtain 16 using the numbers 1, 2, 3, and 4 with addition and multiplication, the expression is 4 x (3 + 1). To reach 816, place 8 in the hundreds place by calculating 8 x 100 and add the previously obtained 16.
Explanation:
To create an expression that evaluates to 16 using the numbers 1, 2, 3, 4 each only once and the operations + or x as many times as you like, we can use the following expression:
4 x (3 + 1) = 16
To write an expression that evaluates to 816 using our 16, simply prepend the number 8 to 16, which can be done by using multiplication and addition as follows:
8 x 100 + 4 x (3 + 1) = 800 + 16 = 816
This utilizes the concept that numbers can be broken down into sums of multiples of powers of 10 (place value), which is a fundamental principle in mathematics.
I need help I don’t get the question
Sasha lives 1,493 miles from her grandmother. One year, Sasha's family made 4 round trips to visit her grandmother. How many miles did they travel in all?
Final answer:
Sasha's family traveled a total of 11,944 miles over the course of the year by making 4 round trips to visit her grandmother, with each round trip being 2,986 miles.
Explanation:
The student is asking a mathematics question related to calculating the total distance traveled during multiple round trips. In this problem, Sasha's family traveled 1,493 miles to visit her grandmother, and they made this trip 4 times in a year. To find out how many miles they traveled in all, we need to calculate the distance of one round trip and then multiply by the number of round trips made.
A round trip consists of going to the grandmother's house and then returning back, so that's 1,493 miles each way. Therefore, one round trip would be:
1,493 miles (to grandmother) + 1,493 miles (back) = 2,986 miles.
Since they made 4 round trips, we calculate:
2,986 miles (for one round trip) x 4 (round trips) = 11,944 miles.
Thus, Sasha's family traveled a total of 11,944 miles to visit her grandmother over the course of the year.
the nth term of a sequence is n+7 . what are the first 3 terms of the sequence
Answer:
First 3 terms of the sequence are:
8,9,10
Step-by-step explanation:
The nth term of a sequence is n+7 .
We have to find the first three terms of the sequence
First term(n=1) = 1+7 =8
Second term(n=2) = 2+7 =9
Third term(n=3) = 3+7 =10
Hence, first 3 terms of the sequence are:
8,9,10
what is 64.3-3x2 to the third power divide by 2
To solve the expression 64.3-3x2 to the third power divided by 2, simplify inside the parentheses, raise the result to the third power, and divide by 2.
Explanation:To solve the expression 64.3-3x2 to the third power divided by 2, we need to follow the order of operations, which is parentheses, exponents, multiplication, and division from left to right.
First, let's simplify the expression inside the parentheses: 64.3-3x2 = 64.3-6 = 58.3
Next, we raise the result to the third power: 58.3^3 = 19671.327
Finally, we divide the result by 2: 19671.327 / 2 = 9835.6635
Hank estimated the width of the door to his classroom in feet. What is a reasonable estimate?
Find and compare the unit prices. Which one is the better buy?
3 for $1.00
Or
10 for 3:00
Plz answer both parts ibe been really stuck on this one :)
find the product of 2and 3 and then take away 5
Jim drove 153 miles in 3 hours. If he can keep the same pace, how long will it take him to drive 1377 miles?
Sydney has piles of 10 stickers sheets. She has 100 sheets in all. How many piles does she have?
the expression 6xi³(4xi+5) is equivalent to what?