In 2010, the population of a city was 231,000. From 2010 to 2015, the population grew by 5%. From 2015 to 2020, it fell by 3%. To the nearest 100 people, what was the population in 2020?
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Answer:
246.000
Step-by-step explanation:
..............
Related Questions
Determine whether each mathematical statement is true or false. The answer choices on the right may be used more than once.
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2. false
3. false (they’re equal)
4. true
5. true
A quadratic function is defined by f(x) = x^2 - 8x - 4 Which expression also defines f and best reveals the maximum or minimum of the function?
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Answer: D
Step-by-step explanation:
(x-4)²-20
(x-4)(x-4)-20
(x^2)-8x+16-20
= (x^2)-8x-4
D is the same equation as in the question, just written in another form (they are equal). In this form (vertex), the vertex is (h,k), which is easily found in this equation. The vertex reveals the maximum or minimum. The vertex in this problem is (4,-20) because vertex form is f(x)=a(x-h)^2 + k.
please help ........................................
Answers
Answer:
3.35 decimeters
Step-by-step explanation:
You just add 2.65+.7
The table shows the multiplication of two linear expressions. Select the correct reason for each step.
Reason 1:
Reason 2:
Reason 3:
Reason 4:
Answers
Answer:
Step-by-step explanation:
reason 1:
opening of brackets to solve the expression
reason 2:
in multiplication order is followed i.e. the number always lead the variable in the expression
reason 3:
for clarification brackets are added to multiply like terms i.e. numbers with numbers and variable with the variable
reason 4:
the solved and simplified expression is delivered as a result
what is 0/0+1000000000000/3.333333333333. Its unedentified but just take the free 100 points
Answers
Answer:
okay
Step-by-step explanation:
thanks for the points btw it's unedentified
Answer: The sun
Step-by-step explanation:
0/0=yellow
so you divide pi and add the area of green so thanks
Predict the cost of a meal for a family of four between $50.00 and $100.00. Be sure to include dollars and cents.
Part A: If the family has a 15%-off coupon, calculate the new price of the meal. Show all work or explain your steps. (2 points)
Part B: Calculate a 20% tip using the new price. What is the final cost of the meal? Show all work or explain your steps. (2 points)
Answers
Answer:
$51
Step-by-step explanation:
lets say 50, so 15% of 50 is 42.5 and + 20% for tip which is $51
An airplane flies at an altitude of 24,000 feet. A submarine dives to the depth of 800 feet below sea level. What is the difference
Answers
Answer:
24,800
Step-by-step explanation:
x-2y=3, x^2-2y=3, x^2-2xy+4y^2=11, find the value of x^2y-2xy^2
Answers
This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:
x^2-2y=3 - (x-2y=3) => x^2-x=0
Then we can factor the resulting equation and find the values of x:
x^2-x=0 => x(x-1)=0 => x=0 or x=1
Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:
x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1
Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:
x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1
Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.
Which sequence shows the numbers in order from least to greatest?
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Answer: B.) 9 7/8, √105, 1.14×10^1
Step-by-step explanation:
√105 = 10.246...
1.14×10^1 = 11.4
9 7/8 cannot be simplified
so, the correct order is 9 7/8, √105, 1.14×10^1
hope this helped you and have a great day!Which scenario can be modeled by the linear function
y = -15x + 500?
A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.
B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.
C. A carpet cleaning service charges $500 plus an additional $15 for every hour.
D. A membership fee for a movie streaming service is free, but each rental costs $15.
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IXL MATH- look at the picture.
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The true statement from the options given is that the y-intercept of Function A is greater than that of function B.
Obtaining Intercept valuesIntercept of function A is the constant value in the expression :
Intercept = 5Intercept of function B :
slope = (-6 - 10)/(-9 - 7) = 1
y = bx + c
10 = 1(7) + c
10 = 7 + c
c = 10 - 7
c = 3
5 > 3
Therefore, y-intercept of Function A is greater than or function B.
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VIEWS The number of daily views during the first 10 days for a video posted on the Internet decreases according to the function 20(0.8¹). In the equation, x represents the number of days since the video was released and y represents the number of daily views, in thousands. Identify the relevant domain and range. Round to the nearest tenth if necessary.
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Answer:
Answer is b i took the test
What is the perimeter of this composite shape? ___ ft.
Use 3.14 for "pi" and round to the nearest hundredths place.
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Answer:
55.1 ft
Step-by-step explanation:
4 + 4 + circumference of the circle
Formula for circumference of a circle is 2 · π · radius, but can also be written as π · diameter
4 + 4 + (15 · π)
4 + 4 + (15 · 3.14)
4 + 4 + 47.1
8 + 47.1
55.1
For an equation of the form ax^2 + bx+ c = 0, where the graph crosses the y-axis once and does not intersect the x-axis. Describe the solution(s) of the equation.
(picture)
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Answer:a
Step-by-step explanation:
The solution to the equation ax² + bx + c = 0 , has a graph that crosses the y-axis once and does not intersect the x-axis, then the equation has one real root and two complex conjugate roots that lie on either side of the axis of symmetry.
What is Quadratic Equation?A quadratic equation is a second-order polynomial equation in a single variable x , ax² + bx + c=0. with a ≠ 0. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.
The roots of the quadratic equations are
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
where ( b² - 4ac ) is the discriminant
when ( b² - 4ac ) is positive, we get two real solutions
when discriminant is zero we get just one real solution (both answers are the same)
when discriminant is negative we get a pair of complex solutions
Given data ,
Let the quadratic equation be represented as A
Now , the value of A is
If the graph of the equation ax² + bx + c = 0 crosses the y-axis once, it means that the equation has one real root. This is because when x = 0, the equation becomes:
c = 0² + 0 + c = c
Therefore, the point (0, c) is on the y-axis, which means the graph crosses the y-axis once.
If the graph does not intersect the x-axis, it means that the discriminant b² - 4ac is negative. This is because the discriminant determines the nature of the roots of a quadratic equation, and when it is negative, the roots are complex (not real) and the graph does not intersect the x-axis.
So, the solution(s) of the equation ax² + bx + c = 0 are:
x = (-b ± √(b² - 4ac)) / 2a
Since the discriminant is negative, the term inside the square root is negative, and there are no real solutions for x. Instead, the solutions are complex conjugates of the form:
x = (-b ± i√(4ac - b²)) / 2a
where i is the imaginary unit. Since the real part of these solutions is -b/2a, which is the axis of symmetry of the parabola, and the parabola does not intersect the x-axis, the complex roots will be a conjugate pair that lie on either side of the axis of symmetry.
Hence , the quadratic equation is solved
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What is the x-intercept of the line with this equation?
1/3 x + y = - 15
Answers
Answer:
x intercept (-45,0)
Step-by-step explanation:
to find the x-intercept substitute in 0 for y and solve for x
1/3x+0=-15
1/3x=-15
1/3 ÷ 1/3 = -15 ÷ 1/3
x = -45
Polygon ABCD with vertices at A(1, 1), B(3, 1), C(3, 2), and D(1, 2) is dilated to create polygon A′B′C′D′ with vertices at A′(3, 3), B′(9, 3), C′(9, 6), and D′(3, 6). Determine the scale factor used to create the image.
3
2
one half
one third
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To determine the scale factor used to dilate polygon ABCD to A′B′C′D′, we can compare the corresponding side lengths.
The distance between A(1, 1) and B(3, 1) is 2 units, and the distance between A′(3, 3) and B′(9, 3) is 6 units, so the horizontal side has been scaled by a factor of 6/2 = 3.
Similarly, the distance between A(1, 1) and D(1, 2) is 1 unit, and the distance between A′(3, 3) and D′(3, 6) is 3 units, so the vertical side has been scaled by a factor of 3/1 = 3.
Since both scaling factors are equal to 3, the overall scale factor used to dilate the polygon is 3. Answer: 3.
what is the value of this expression
5 (9/12 - 1/4) + 0.5
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The answer to this is 3
__________________________________________________________
PEMDAS= Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction
__________________________________________________________
9/12 - 1/4 = 0.5
0.5 x 5 = 2.5
2.5 + 0.5 =3
Which angle is vertical to ABI?
Answers
Check the picture below.
Directions: Answer each of the following questions.
1. Do you know the current world population? What units did you use in this estimate? What site did you use to locate this information?
2. What is the increase in the world population over the last 10 years? What site did you use to locate this information?
3. Look at the table below. Compare the population growth in the last ten years to the growth between 1950 -1960. How did you compare the growth over different periods of time?
4. Do you think it would be useful to be able to predict future population? Why?
5. Identify factors that influence population growth?
6. Identify possible consequences of population growth.
Part B
Directions: Review the table below that includes the world population for selected years.
Year
1950
1960
1970
1980
1985
1990
1995
1999
Population (billions)
2.555
3.039
3.708
4.456
4.855
5.284
5.691
6.003
U.S. Census Report http://www.census.gov
a. Research the world population growth from 2000-2005, and from 2005-2010. Create a table for your data. Provide the site that you used to gather the data.
Part C: Analyze the data
Directions: Answer each of the following questions.
1. How much did the population change between 1950 and 1960? What was the average annual change for that period? Hint: Calculate the changes, then calculate the mean, or average, by dividing by the number of years. State the units clearly. The units are listed on the chart.
2. Repeat question 1 for the period between 1970 and 1980; between 1990 and 1995.
3. Do you think a linear model (or graph) would best illustrate this data? Explain your reasoning.
Part D: Interpret your data
Directions: Answer each of the following questions.
1. Is the average change in population the same now as it was 50 years ago? Explain your answer.
2. Reflect on the interpretation of your data.
3. What should you consider when comparing population growth (or decline) over different intervals of time? Hint: What factors influence population growth or decline? Explain fully and provide examples where needed.
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Answer:
I don't think anyone is going to answer ALL of those questions but ill get you started...
Step-by-step explanation:
1: 7.8 billion. Used billions as my unit. Did not use a site, I already knew this information.
2: The population has increased by approximately 12% in the last 10 years. Worldometer.com shows this information.
3: 1950 population: 2.5 billion, 1960 population: 3.039 billion. The population comparison can be achieved by looking at the increase in billions. The increase was almost 0.6 billion.
Hopefully, that can get you started.
Of 15 people, 9 wore sandshoes, 8 wore shorts and 3 wore neither sandshoes nor shorts
1. How many people wore both sandshoes and shorts?
2. How many people wore shorts but not sandshoes?
Answers
Answer:
1. 0 2. 8
Step-by-step explanation:
Answer:
1. 0
2. 8
Step-by-step explanation:
HELP, BRAINLIEST IF CORRECT Two teams working together can finish a job in 8 days. if the first team works alone for two days and the second team works alone for 5 days, 5/8 of the total work still remains. How many days will it take each team to finish the work alone?
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Answer:
If 2 teams work together they can finish a job in 8 days. The rate of work of the first team is 5/8 of the rate of the second team. How many days each team needs to complete this job working alone.
Step-by-step explanation:
Help!!
Use the diagram of the equilateral triangle shown below to answer the following questions. Show the work that leads to your answers. a. What is the perimeter of the triangle? b. What is the height, ℎ mm, of the equilateral triangle? Write an exact answer using a square root and an approximate answer rounded to the tenths place.
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Answer:
Perimeter is 12mm, height is \(2\sqrt3\)mm in simplest radical form, and 3.5mm in approximate decimal form.
Step-by-step explanation:
The perimeter is easy; since it's an equilateral triangle, all sides are the same length of 4, so you can just do 3*4 (3 sides, 4mm each) to get a perimeter of 12.
For the height, you can see that it forms two right triangles, each with a given base of 2 and a hypotenuse of 4. We can apply the pythagorean theorem (\(a^2+b^2=c^2\)) here to find the missing leg length of the smaller right triangles, which is equal to the big triangle's height.
I've enclosed an attachment for that.
Hope this helps!
Select the example which illustrates the distributive property of 7 × 39
(7 + 3) (7 + 9)
(7 × 30) + 9
39 × 7
7(30 + 9) = 7(30) + 7(9)
THIS IS URGENT- BLUE!!!
Answers
Answer:
d) 7(30 + 9) = 7(30) + 7(9)
Step-by-step explanation:
Distributive method:
a(b + c) = ab + acHere given:
7 × 39Among the option's:
1st option (7 + 3) (7 + 9) is wrong, changes final answer.
2nd option (7 × 30) + 9 is wrong, changes final answer.
3rd option 39 × 7 shows commutative property of multiplication.
4th option show distributive method.
please help asap asap asap
Answers
Answer:14
Step-by-step explanation:
\(3 \times (4 + 6) - 16 = \)
\(3 \times (10) - 16 = \)
\(3 \times 10 - 16 = \)
\((3 \times 10) - 16 = \)
\(30 - 16 = \)
\(14\)
HELP PLEASE sorry for caps i need this done quick.
Answers
Answer:
1. 2(3x-4)
2. 5(7+1)
3. 8(3+1)
4. 7(5x+4)
5. 4x-20
Step-by-step explanation:
Hope this helps!
math............ i dont get it
Answers
Answer:
0,8
Step-by-step explanation:
10/8=0,8
Answer:
The scale factor is 1.25
Step-by-step explanation:
10/8 =1.25
(1.25 x 8 =10)
Hope this helps!
This work is way to hard and my work is stacking it would be nice to have some weight off my back
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1) Popcorn unit price: 17.57/7 = $2.51
2.51 x 3 = 7.53
Three bags of popcorn would cost $7.53.
2) Old games unit price: 73.10/5 = 14.62
14.62 x 6 = 87.72
If they sold six games they would've made $87.72.
3) Lollipop unit price: 20.51/7 = %2.93
2.39 x 4 = 11.72
Four lollipops would cost $11.72
4) Hotdogs unit price: 82.86/3 = $27.42
Hamburgers unit price: 55.12/2 $27.56
Hotdogs have the lower unit price. $27.42 < $27.56
5) Packs of paper unit price: 12.74/7 = $1.82
1.82 x 2 = 3.64
Two packs of paper would cost $3.64
6) Pair of shoes unit price: 49.32/4 = $12.33
12.33 x 6 = $73.98
Six pairs of shoes would cost $73.98
7) Brand A unit price: 71.28/6 = $11.88
Brand B unit price: 59.15/5 = $11.83
Brand B has the cheaper price. $11.83 < $11.88
8) Pounds of seeds unit price: 37.62/2 = $18.81
18.81 x 6 = $112.86
Six pounds of seeds would cost $112.86
9) Red Grapes unit price: .82
Green Grapes unit price: .84
Green grapes are more expensive. .84 > .82
10) Book Store unit price : 21.69/3 = $7.23
Online unit price: 14.28/2 = $7.14
Online has a lower unit price. $7.14 < $7.23
Caitlin is making oatmeal cookies
She wants to make 1 1/2 batches
Each batch of cookies requires 2 1/2 cups of oatmeal
She has 3 1/4 cups of oatmeal
How many more cups of oatmeal does Caitlin need?
Answers
Answer: She needs 1/2 a cup of oatmeal
Step-by-step explanation:
step 1. turn the 2 1/2 into a decimal to get 2.5
step 2. divide the decimal in half to get 1.25
step 3. add 2.5 + 1.25 = 3.75
step 4. take that answer and subtract it by how much oatmeal you have (3.25) to get 0.5 this means that you need half a cup of oatmeal to make 1 1/2 batches of oatmeal cookies
Answer:
1/2 cups
hope you like it : )
Grocery Mart has cookies on sale for $3 for 12 cookies. Food Shoppe has cookies on sale for $5.70 for 19 cookies. Which store has a better deal on cookies. Write the cheaper cost per cookie in dollars. ($_.__)
Answers
Answer:
5.70 for 19
Step-by-step explanation:
Do you support LGBTQ+ or not?
( Don't be mean )
Answers
Answer:
it is important that the LGBTQ+ community should be treated with respect and equality. Everyone deserves to live their lives freely and without fear of discrimination or prejudice.
Step-by-step explanation: