Has the marrying age of a man changed over the years? The United States Bureau of the Census takes a formal count of everyone in the U.S. every 10 years and has provided the following data that gives the median age of an American man at the time of his first marriage.
Year
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
Median Age
25.1
24.6
24.3
24.3
22.8
22.8
23.2
24.7
26.1
26.8
What does a rate of change of zero mean in this situation?
a.
The median age of a man at the time of his first marriage is, on the average, constant.
b.
The median age of a man at the time of his first marriage is, on the average, decreasing.
c.
The median age of a man at the time of his first marriage is, on the average, increasing.
d.
The rate of change cannot be zero in this situation.
Answer:
its a on edg 2021
Step-by-step explanation:
The median age of a man at the time of his first marriage is, on the average, constant.
What is the average change rate?It represents the average amount by which the function changed per unit across the time period. It is calculated using the slope of the line connecting the interval's ends on the function's graph.
Assuming that the United States Bureau of the Census conducts a formal census of everyone in the United States every ten years, the following data provides the median age of an American man at the time of his first marriage.
Determine the rate of change between 1950 and 1960.
The average rate of change = [f(a) - f(b)]/ [ a - b ]
The average rate of change is equal to (22.8 - 22.8) / 10 = 0.
As a result, the average rate of change between 1950 and 1960 is zero. B is the right answer.
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Naomi used a rectangle, a square, and a right triangle to form the following figure. What is the area of the shaded region of the figure in square centimeters?
Answer:
102cm²
Step-by-step explanation:
Step 1 find the area of the whole rectangle
Area of a rectangle = width times length
The width of the rectangle is 20 cm and the length is 6cm
So the area = 20 * 6
20 * 6 = 120
Hence the area of the rectangle is 120 square centimeters.
Step 2 Find the area of the square and the triangle
Area of square = s²
where s = side length
The square has a side length of 3 so the area of the square = 3²
3² = 9
Hence, the area of the square is 9cm²
Now to find the area of the triangle
area of a triangle = [tex]\frac{bh}{2}[/tex] where b = base length and h = height
We are given the height (3 cm, this is given because the square is sharing it's side length with the height of the triangle.)
Now to find the base length
We can find it by subtracting the overall rectangle's width (20cm) by the bottom width (11 cm) and the bottom length of the square ( 3 cm )
so triangle's base length = 20 - 11 - 3
20 - 11 - 3 = 6
so the base length of the triangle is 6 cm
now we plug in the values of the height and the base length into the formula
[tex]A=\frac{6*3}{2} \\6*3=18\\\frac{18}{2} =9[/tex]
Hence the area of the triangle is 9 cm²
Finally, to find the area of the shaded area, we subtract the area of the triangle and the area of the square from the area of the rectangle
so your answer = 120 - 9 - 9
120 - 9 - 9 = 102
Hence, the area of the shaded region is 102 square centimeters.
write the rate and unit rate. 609 kilometers in 7 hours ???
Answer:
The rate is 609 kilometers per 7 hours.
The unit rate is 609/7 = 87 kilometers per hour.
Step-by-step explanation:
Should be right
Answer:
87 Kilometers per hour and if by unit rate you mean how many miles they are doing a miniute then it is 1.45 kilometers per hour
Step-by-step explanation:
Each figure below is a regular polygon and has a radii and apothem shown. Find the measure of each numbered angle
HELP ASAP!!!! 10 points!!
Answer:
a, b, c are all perfect square trinomials
Step-by-step explanation:
a) (x+3)²
b) (w²-2)²
c) (xy-1)²
Please need help evaluate the math problems
x + y when x = 6 and y = 2
6 + 2 = 8
[tex]\frac{9x+24}{4}[/tex] when x = 12 and y = 20
[tex]\frac{148}{4}[/tex] = 37
[tex]\frac{6m}{n}[/tex] when m = 12 and n = 3
[tex]\frac{72}{3}[/tex] = 24
Six times x
6x
Six increased by x
6 + x
The sum of x and y
x + y
hi please help i’ll give brainliest thanks
Answer:
point A
Step-by-step explanation:
Hope this helps you dude.
free brainlest To first person pls
4 x (9 - 2)
Answer:
=28x
Step-by-step explanation:
Solve within parenthesis first;
Subtract 9-2=7
=4*7x
Multiply the numbers;
4*7=28
=28x
Please answer correctly! I will mark you as Brainliest!
Answer:
V = 336 ft3
Step-by-step explanation:
1/2*7*16*6
336
Answer: 336 ft cubed
Step-by-step explanation:
Formula is 1/2 times B times L times H so, 7 times 6 is 42, 42 times 16 is 672 and 672 divided by 2 or multiplied by 1/2 is 336
help me pzz please please
Answer:
Step-by-step explanation:
i dont get it
Answer:
just multiply al the sids like you would with a square
Look at this graph :
Is this relation a function?
Step-by-step explanation:
Yes it is a function dearest
if i get 20 dollars per 5 minutes for 10 hours how many dollars will i make
Answer:
2400 dollars
Step-by-step explanation:
600 minutes in 10 hours
600/5 = 120
120*20 = 2400 dollars
Will give Brainliest please help!!!!!!!!!!!!!!
Answer:
4⁷
Step-by-step explanation:
Rule of exponents is:
aˣ · aⁿ = a⁽ˣ ⁺ ⁿ⁾
4⁵ · 4² = 4⁽⁵ ⁺ ²⁾ = 4⁷
Answer:
Step-by-step explanation:
If it's what i think it is, it's answer with letter ABecause main part if same, you just write it again and exhibitors get collected5+2= 7. I hope i helped you!Which expression is equivalent to -7(y-2)?
A. -7y - 2
B. -7y + 2
C. -7y - 14
D. -7y + 14
Answer:
D) -7y + 14
Step-by-step explanation:
-7 x y = -7y
-7 × -2=14 ( negative times negative equals positive)
I need help hurry please
Answer:8.8ft
Step-by-step explanation:
250/3.14*3^2
250/3.14*9
250/28.26
8.8464
8.8ft
Find the area of a garden whose circumference is 36 yards.
Solve for x if: y = -6 and -10x + 7y = 18
A) 8
B)-18
C)-6
D)9
Answer:
Step-by-step explanation:
-10x+7(-6)=18
-10x-42=18
+42 +42
___________
-10x/-10=60/-10
x= -6
ercise 5d
lve the following
lutions.
13 - 6a = 1
Answer:
the answer is 17a
Step-by-step explanation:
I took the quiz
What is the circumference in centimeters of the circle 24cm
Answer:
75.36
Step-by-step explanation:
C= 2 pi r
c= d pi
c= 24*3.14
c= 75.36
find the sum of the polynomial : (3 x2- 8x + 2) + (3 x3 + 7x + 6) =
Answer:
3x² + 3x³ - x + 8
Step-by-step explanation:
All we have to do is add the terms together
(open parentheses as well)
3x² - 8x + 2 + 3x³ +7x +6
now, simplify
3x²+3x³-x+8
Please help ASAP (NO LINKS)
An import business owner paid $6000 for the goods sold in one month. Her additional expenses are $1600 per month. If she marks up her merchandise 70%, what was her profit for the month?
Answer:
the answer is $2,600 I belive so
marking brainliest! please help
Answer:
H.
Step-by-step explanation:
F is incorrect because you don't know how many service calls a person will make. G is incorrect for the same reason, but with texts. J is incorrect because 8 skirts per hour is making the graph unproportioned.
Answer:
H
Step-by-step explanation:
A bakery makes 6 loaves of bread every 1/2 hour or 12 loaves every hour.
f(n)=x2+1
g(n)=2x-5
Find f(n)-g(n)
What is the volume of this cone?
Answer:
[tex]V=209\ cm^3[/tex]
Step-by-step explanation:
The height of this cone, h = 8 cm
The radius of this cone, r = 5 cm
We need to find the volume of this cone. The formula for the volume of a cone is given by :
[tex]V=\dfrac{1}{3}\pi r^2 h[/tex]
Put all the values,
[tex]V=\dfrac{1}{3}\times 3.14\times 5^2 \times 8\\\\=209.33\approx 209\ cm^3[/tex]
So, the volume of this cone is equal to [tex]209\ cm^3[/tex].
please solve Y Im in desperate need of help..
Answer:
Y = 10
Explanation:
We know that the left and top angles are 45°, the base is 10, and the bottom right angle is 90°, or a right angle. The simplest way I can explain this is the bottom side of the triangle is the same as the right side of the triangle. Meaning "y" would be 10 like the bottom.
If I'm right, I'd appreciate a brainliest as it'd really help me out :D
There are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from. If you randomly choose your character and tool, what is the probability that you'll be a magic elf?
Answer:
The probability that I pick a magic elf is 6.66%.
Step-by-step explanation:
Since there are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from, if I randomly choose my character and tool, to determine what is the probability that I'll be a magic elf, the following calculation must be performed:
1/3 x 1/5 = X
0.3333 x 0.2 = X
0.0666 = X
0.0666 = 6.66%
Therefore, the probability that I pick a magic elf is 6.66%.
Ahmed and his family has dinner at a restaurant and the cost of their meal is BD 28.
Because of the service, he wants to leave a 20% tip. What is his total bill including tip?
ents
Select the correct response:
се'
BD 24.600
ts
BD 33.600
BD 40.500
BD 40
Answer:
Total bill will be BD 33.600
Step-by-step explanation:
28 multiplied by 20% = 5.6
Add 5.60 to the cost
28.00 + 5.60 = 33.600
hope this helps and is right. p.s. i really need brainliest :)
A Canadian tourist carried CAN $500 with him to Jamaica to spend. If he were to change it into Jamaican currency, how much JM dollars would he have to spend? CAN $1.00 = JMD $117
Answer: A Canadian tourist carried CAN $500 with him to Jamaica to spend. If he were to change it into Jamaican currency, how much JM dollars would he have to spend? CAN $1.00 = JMD $117
Hope this helps, if I got it wrong, I'm very sorry.
The answers to any of these would be really helpful
Answer:
Step-by-step explanation:
Q9) Surface Area of a cylinder
= 2πr(r + h)
Diameter = 12cm , Radius = Diameter/2 = 12 cm/2
r = radius = 6cm
h = height = 10 cm
Surface area = 2 × π × 6(6 + 10)
= 603.18579 cm²
Approximately = 603.2 cm²
Q11) Volume of a rectangular prism
Length × Width × Height
Length = 6.5cm
Width = 8.5 cm
Height = 4 cm
Volume = 6.5 cm × 8.5 cm × 4 cm
Volume = 221 cm³
Q12) Volume of the cylinder = πr²h
r = radius = 1.7m
h = height = 9 m
Volume = π × 1.7 × 9
= 81.71 m³
Approximately = 81.7 m³
Q13) Volume of the cylinder = πr²h
Diameter = 0.8m, Radius = Diameter/2 = 0.8m/2
r = radius = 0.4m
h = height = 1.5 m
Volume = π × 0.4 × 1.5
= 0.75 m²
Approximately = 0.8 m³
You randomly choose one marble from the jar. Find the theoretical probability of the event.
1. Choosing a red marble
2. Choosing a green marble
3. Not choosing a blue marble
Answer:
1. 33%
2. 16%
3. 50%
Step-by-step explanation: