Answer: 3.11*10^7/7.69*10^63110/769 Answer:4.04
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The population density of Australia/Oceania is calculated by dividing the total population (3.11 × 107 people) by the total area (7.69 × 106 square kilometers), which results in a density of approximately 4.04 people per square kilometer.
Explanation:To calculate the population density of Australia/Oceania, we need to divide the total population by the total area. The area of Australia/Oceania is approximately 7.69 × 106 square kilometers, and the population is approximately 3.11 × 107 people.
The calculation for population density is:
Population Density = Total Population / Total Area
So:
Population Density = 3.11 × 107 people / 7.69 × 106 square kilometers
This results in a population density of
Population Density = 4.04363 people per square kilometer (unrounded)
Rounded to the nearest hundredth, the population density is approximately 4.04 people per square kilometer.
Find one value of x that is a solution to the equation: (3x-1)^2 +12x -4 =0
X =
Carlos correctly answered 46 of the 50 questions.what percent of the questions did he answer correctly?
Answer:
92%
Step-by-step explanation:
46/50=?/?
multiply 50 by 2 then 46 by 2
46/50=92/100
92/100= 92%
Harry bought a used bike for 1,050. Before purchasing the bike, Harry had a total of 1250 I. His savings account what percentage of his account did Harry spend on a diet bike?
Answer:
84%
Step-by-step explanation:
1,050÷1250
= 0.84
=84%
The dimensions of a rectangular prism are 8 yd by 8 yd by 4 yd. Find the surface area of the prism.
Answer:
The surface area of the rectangular prism is 256
Step-by-step explanation:
Answer:
256 yd2
Step-by-step explanation:
What are the coordinates of the first alien who needs to be rescued?
What is the slope of the line that provides the correct path to rescue the alien?
Answer:
1,4 and 4
Step-by-step explanation:
Answer:
1 4 4
Step-by-step explanation:
Are (-1,3) and (1,5) parallel
Answer:
no
Step-by-step explanation:
assuming these are slopes?? two points cant be parallel theyre just dots, no these are not parallel
Please mark as brainliest
60 points
Which equation represents a proportional relationship?
A) y = 2 5 x
B) y = 1 3 x + 5
C) y = −3x − 1
D) y = 2x + 0.5
Answer:
choice A: y = 25*x
Step-by-step explanation:
A proportional relationship between x and y would be y = 25*x
because y/x = 25 (a constant)
We could say that y = 2x + 0.5 can be a proportion relationship, but not between y and x directly.
y= 2* x + 2* (1/4) = 2* (x + 1/4)
and get : y / (x + (1/4) ) = 2 y and (x + (1/4)) are in a proportional relationship, except it would not be y and x .
Answer:
A) y = 2 5 x
Step-by-step explanation:
ANSWER QUICK. I NEED ANSWER IN 5 MINUTES.
Answer: No
Step-by-step explanation:
I believe there would only be one describing both if they were parallel lines, but they are going two different directions in this graph. Correct me if I am wrong!
What is the reduced and simplified value of the expression given below
Answer:
8
Step-by-step explanation:
4 x 6
-------
3
to... 24
---- = 8
3
Answer:
8
Step-by-step explanation:
[tex]\frac{\sqrt{16}*\sqrt{36} }{\sqrt{9} } =\frac{4 * 6}{3}=\frac{24}{3} =8[/tex]
Please mark my answer as the brainliest!!!!
What is the volume of a cylinder with base radius 2 and height 9?
Either enter an exact answer in terms of TT or use 3.14 for 7 and enter your answer as a decimal.
cubic units
Answer:
V = 36[tex]\pi[/tex] units³
Step-by-step explanation:
Use the formula for the volume of a cylinder, V = [tex]\pi[/tex]r²h, where r is the radius and h is the height:
Plug in the values:
V = [tex]\pi[/tex](2²)9
V = 36[tex]\pi[/tex] units³
Multiply (2x^2-3x+1)*(x^2-4x-3)
[tex](2 {x}^{2} - 3x + 1)( {x}^{2} - 4 - 3) = \\ = 2 {x}^{4} - 8 {x}^{2} - 6 {x}^{2} - 3 {x}^{3} + 12x + 9x + {x }^{2} - 4 - 3 = \\ = 2 {x}^{4} - 3 {x}^{3} - 13 {x}^{2} + 21x - 7[/tex]
The function s(V) = Negative RootIndex 3 StartRoot uppercase V EndRoot describes the side length, in units, of a cube with a volume of V cubic units. Jason wants to build a cube with a minimum of 64 cubic centimeters.
What is a reasonable range for s, the side length, in centimeters, of Jason’s cube?
s > 0
s greater-than-or-equal-to 4
s greater-than-or-equal-to 8
s greater-than-or-equal-to 16
Answer:
(B)s greater-than-or-equal-to 4
[tex]s\geq 4[/tex]
Step-by-step explanation:
The function [tex]s(V)=\sqrt[3]{V}[/tex] describes the side length, in units, of a cube with a volume of V cubic units.
If Jason wants to build a cube with a minimum of 64 cubic centimeters,
[tex]V\geq 64 $ cubic meters[/tex]
Therefore:
[tex]s(V)\geq \sqrt[3]{64}\\s\geq 4 $ Units[/tex]
The correct option is B.
Answer:
B. s greater-than-or-equal-to 4
Step-by-step explanation:
Allyson has 4.5 pieces of rope to use for a tire swing. If each full piece is 2 2/3 feet long, how much rope does Allyson have in all?
Answer:
12 feet
Step-by-step explanation:
4.5 pieces of rope = 9/2 pieces in fractions
Also, 2 2/3 can be rewritten as 8/3 in fractions
So, 9/2 *8/3 = 72/6 = 12 feet
Allyson has 12 feet of rope in all.
The history test has 19 questions. There are
true or false questions worth 4 points each
and multiple-choice questions worth 6 points
each. How many multiple-choice questions
are on the 100 point test?
Answer:
12 multiple choice questions
Step-by-step explanation:
The system of equations is:
m + t = 19 (quantity of questions)
6m + 4t = 100 (point value)
We use elimination to solve.
Multiply everything in the first equation by 4.
4m + 4t = 76.
subtract that from the second equation.
2m = 24
Divide both sides by 2.
m = 12
Answer:
Step-by-step explanation:
Let x be the number of true or false questions.
Let y be the number of multiple choice questions
Total questions = 19
x + y = 19 ---------------(i)
Total points = 100
4x + 6y = 100 ---------------(ii)
Multiply equation (i) by (-4).
(i)*(-4) -4x - 4y = -76
(ii) 4x + 6y = 100 {Now add. thus x will get eliminated}
2y = 24
y = 24/2
y= 12
There were 12 multiple choice question
6,000 is invested in an account that earns 4.5% annual interest, compound quarterly. What is the value of the account after 8 years?
can someone please help me with exponential models (algebra 2)? i have three word problems i really need help with. i put a picture of them. i only need 26, 28, and 30. thank you :)
I will see if i can help you since you had helped me
26. 244611.80 $
27. ?
28. 2568246.87126 $
29. 11850.59
30. 426647.047 $
I do not know about #27
But I do know about the rest
Please help! You don’t have to show work
Answer: The answer is B I hope that helps:)
Step-by-step explanation:
Which ordered pair could be part of this
function: (2,4), (3,7), (9, 1)?
A (4,1)
B (3,11)
C (2,9)
values
D (9,0)
Answer:
i dont know answer but a ordered pair is said to be a function if every element of A associates with unique element of B.
All parbolas with vertical directrix open to the left or right
True or false
The statement is false because parabolas can also open upwards or downwards if the directrix is horizontal. A parabola's open direction depends on the position of the directrix relative to the focus.
Explanation:The statement that "All parabolas with vertical directrix open to the left or right" is false. A parabola's orientation is determined by the position of its directrix in relation to its focus. If you have a vertical directrix, the parabola will indeed open to the left or the right, depending on the side of the directrix the focus lies. However, if the directrix is horizontal, the parabola will open upwards or downwards. To help understand this, recall that the directrix serves as a line that, in combination with the focus, defines the set of points that make up the parabola—that is, points equidistant from both the focus and the directrix. Furthermore, the equation of a parabola can change based on the orientation and position of the axis, the focus, and the directrix, as shown in various figures and equations related to parabolic motion and geometry.
Simplify -3/4 ÷ 2/-8. (1 point)
Answer:
=3/1 or 3
Step-by-step explanation:
-3/4÷2/-8
=-3 × -8/4 × 2
=24/8
=24 ÷ 8/8 ÷ 8
=3/1
pls help will give brainliest and pls give explanation
Answer:
-4, 2, 8, 14, 20
Step-by-step explanation:
The rule is called a "position to term" rule. That means the word "position" is being used to identify the location of a term in the sequence. The first term is in position 1, for example. Using the rule that the position is multiplied by 6, then 10 is subtracted, we find the terms to be as follows.
In position 1, the term is ...
1×6 -10 = -4
In position 2, the term is ...
2×6 -10 = 2
In position 3, the term is ...
3×6 -10 = 8
In position 4, the term is ...
4×6 -10 = 14
In position 5, the term is ...
5×6 -10 = 20
The first 5 terms are -4, 2, 8, 14, 20.
A restaurant charges $3 for a soda and it includes free unlimited
refills. If this situation were represented as a function, what would be
the slope?
1)O
2)3
3)5
4)7
In this situation, where the price of the soda remains constant regardless of the number of refills, the slope of the function representing this scenario is 0.
Explanation:In mathematics, the slope of a function can be thought of as the rate of change of the dependent variable (in this case, cost) in relation to the independent variable (in this case, number of refills). Given that the price for the soda remains constant at $3 regardless of the number of refills, the slope would be 0. This is because the cost (the y-value) does not change as the number of sodas (the x-value) increases. Thus, the correct answer is 1) 0.
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Find the first three iterates of the function with an initial value of . If necessary, round your answers to the nearest hundredth. a. 13; 175; 20,933 c. 13; 173; 19,933 b. 13; 173; 29,967 d. 13; 173; 29,933
Answer:
D
Step-by-step explanation:
just did it on edge
Darla got a job at a jewelry store. She gets paid $20 for each ring she sells and $50 for each necklace she sells. How much will she earn if she sells 15 rings and 9 necklaces?
Answer:
$750
Step-by-step explanation:
Answer:
$750
Step-by-step explanation:
50 times 9 = 450
20 times 15 = 300
450+300=750
It takes 12.5 mL of a 0.30 M HCl solution to neutralize 285 mL of NaOH solution.
What is the Molarity concentration of the NaOH solution?
13.15 M NaOH
1.5 M NaOH
0.15 M NaOH
0.013 M NaOH
Answer:
0.013 M NaOH
Step-by-step explanation:
HCL + NaOH = NaCL + water
The mole ratio of acid and base is 1:1
Molarity is equal to the moles of solute divided by the liters of solution
Solute mole = 12.5 × 10^-3 × 0.3
= 0.003075
To neutralize 0.00375mol of HCl, 0.00375 mol of NaOH will be required. Since molarity is moles per liter, divide this amount of moles by the volume in liters:
Molarity = 0.00375/285 × 10^-3
Molarity = 0.0131 M
The molarity concentration of the NaOH solution is 0.013M NaOH
The equation of reaction is given as:
[tex]HCl + NaOH >>>>>> NaCl + H_2O[/tex]
Concentration of Hcl, [tex]C_{Hcl}=0.30M[/tex]
Volume of Hcl, [tex]V_{HCl}=12.5mL[/tex]
Concentration of NaOH = [tex]C_{NaOH}[/tex]
Volume of NaOH, [tex]V_NaOH = 285mL[/tex]
From the equation of reaction:
Number of moles of Hcl, [tex]n_{HCl}=1[/tex]
Number of moles of NaOH, [tex]n_{NaOH}=1[/tex]
The formula for neutralization is given as:
[tex]\frac{C_{HCl}V_{HCl}}{C_{NaOH}V_{NaOH}} = \frac{n_{HCl}}{n_{NaOH}}[/tex]
Substitute the values of the parameters
[tex]\frac{0.30(12.5)}{C_{NaOH}(285)} =\frac{1}{1} \\\\C_{NaOH}(285) = 0.30(12.5)\\\\C_{NaOH}(285) = 3.75\\\\C_{NaOH}=\frac{3.75}{285} \\\\C_{NaOH} = 0.013M[/tex]
The molarity concentration of the NaOH solution is 0.013M NaOH
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Invent a data set with five numbers that has a mean of 10 and a median of 12.
Answer:
7,7,12,12,12
Step-by-step explanation:
7+7+12+12+12=50/5=10=Mean
Median=12
The data set could be as follow 7,7,12,12,12 which has a mean of 10 and a median of 12.
What are mean and median?The mean is the average value which can be calculated by dividing the sum of observations by the number of observations
Mean = Sum of observations/the number of observations
Median represents the middle value of the given data when arranged in a particular order.
we have given the information of the data set with five numbers that have a mean of 10 and a median of 12.
Mean = 10
Let's assume the given data set 7,7,12,12,12 so, this must satisfy the information
7+7+12+12+12=50/5
Mean =10
Also,
Median=12
Thus, the data set could be as follow 7,7,12,12,12 which has a mean of 10 and a median of 12.
Learn more about mean and median;
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A triangular pyramid has a base area of 24 square meters and a height of 4 meters. What is the volume of the pyramid?
Answer:
32 cubic meter
Step-by-step explanation:
Volume for any pyramid is given by following expression
volume of pyramid = 1/3( area of base of pyramid * height of pyramid)
________________________________
In the problem
base area of pyramid = 24 sq. m
height = 4 m
Therefore substituting the above given value in formula for volume of pyramid we have
volume of pyramid = 1/3( 24 sq. m * 4 m) = 8 sq. m * 4 m (since 24/3 = 8)
volume of pyramid = 32 cubic meter.
Choose the best function model to represent the following situation: The height of a penny as it is dropped from a building roof.
1. Linear
2. Exponential
3. Quadratic
4. None of the above
Please Answer This is worth 100 points. If you answer correctly I will give you branliest.
Answer:
3. Quadratic
Step-by-step explanation:
Penny is falling under gravity
acceleration due to gravity is constant
Velocity is the integral of acceleration, which is linear
Displacement is the integral of velocity, which is quadratic
What is the measure of XYZ?
A 93°
B 96°
C 186°
D 174°
Answer:
A. 93°
Step-by-step explanation:
The inscribed angle has half the measure of the arc it subtends.
∠Y = 186°/2 = 93°
The measure of angle XYZ is 93°.
Can someone help me please ☝️
Answer:
27
Step-by-step explanation:
Those angles are co interior, and thus add up to 180°. So therefore:
(x+72) + 3x = 180
simplified:
4x+72 = 180
so 180 - 72 = 108
4x = 108
x = 27