Answers
Answer:
a. simple random sampling.
im so sorry if its wrong
Related Questions
Which of these statements is true for f(x) = 4.2?
A. The y-intercept is (0,4).
B. It is always decreasing.
O C. The domain is x > 0.
D. The y-intercept is (0,1).
Answers
Answer:
A
Step-by-step explanation:
I think it's A hope that helps
This is a program for development that lists what an athlete hopes to do in order to meet their goals.
A. Feedback
B. Action Plan
C. none of these
D. Area for improvement
Answers
Answer:
B. Action PlanStep-by-step explanation:
#hope it helps!
Answered by ReyvREYV111
Y’all what is it 87 divided by 3
Answers
Answer:
29
Step-by-step explanation:
87 / 3 = 29
If you can use a calculator it shouldn't be on brainly...
Answer:
Algebraic Expressions
This calculator builds algebraic expressions based on word representations of numbers using the four operators and the words that represent them(increased,product,decreased,divided,times) Also known as Mathematical phrases
Factorials
Calculates the following factorial items:
* A factorial of one number such as n!
* A factorial of a numerator divided by a factorial of a denominator such as n!m!/a!b!
* Double Factorials such as n!!
* Stirlings Approximation for n!
Step-by-step explanation:
Ty pa follow narin po brainly and thank you for the points
The solid below is made from cubes.
Find Its volume.
Answers
Answer: The answer is 30 inches.
Answer:
36
Step-by-step explantion:
1 x 1 = 1 so each cube is 1 square inch
2 x 6= 12
12 x 3 = 36
what is a greatest common denominator?
Answers
Answer:
GCF
Step-by-step explanation:
sorry if you dont understand
figure these question out
Answers
Answer:
5) 3x = 135° and x = 45°
6) (8x + 5) = 61° and (3x + 8) = 29°
Step-by-step explanation:
5) supplementary of two angles whose sum is 180°
3x + x = 180 → 4x = 180
4x / 4 = 180 / 4
x = 45
3x = 3(45)
135°
6) complimentary of two angles whose sum is 90°
(8x + 5) + (3x + 8) = 90 → 11x + 13 = 90
11x + 13 - 13 = 90 - 13
11x = 77
11x / 11 = 77 / 11
x = 7
(8x + 5) = 8(7) + 5
56 + 5 = 61
(3x + 8) = 3(7) + 8
21 + 8 = 29
A sample of 100 cars driving on a freeway during a morning
commute was drawn, and the number of occupants in each car was recorded. The
results were as follows:
Occupants: 1 2 3 4 5
Number of cars: 76 13 6 3 2
Find the...
a) mean
b) standard deviation
c) median
d) What proportion of cars had more than the mean number of occupants
e) What proportion of cars was the number of occupants more than one
standard deviation greater than the mean?
f) What proportion of cars was the number of occupants within one standard
deviation of the mean?
Answers
Answer:
a) mean = 1.42 occupant/car
b) standard deviation = 0.89 occupants
c) median = 1 occupant
d) The proportion of cars had more than the mean number of occupants is 0.24
e) The proportion of cars with the number of occupants more than one
standard deviation greater than the mean is 0.11
f) The proportion of cars with the number of occupants within one standard
deviation of the mean is 0.89
Step-by-step explanation:
Attached work:
A bike rental company charges a fee per hour. The charge, in dollars, is the same each hour. The ordered pairs (3, 13.50) and (5, 22.50) represent the corresponding hours, x, and cost, y. What is the rate of change of the function expressed as a unit rate?
Answers
If the function is y = 4.5x. Then the rate of change of the function expressed as a unit rate will be 4.5.
What is the linear system?A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.
A bike rental company charges a fee per hour.
The charge, in dollars, is the same each hour.
The ordered pairs (3, 13.50) and (5, 22.50) represent the corresponding hours, x, and cost, y.
Then the linear equation is given as
[tex]\begin{aligned} \rm y - 22.5 &= \rm \dfrac{22.5 - 13.5}{5 - 3} (x- 5)\\\\\rm y - 22.5 &= \rm 4.5x - 22.5\\\\\rm y &= \rm 4.5x \end[/tex]
Then the rate of change of the function expressed as a unit rate will be
[tex]\rm \dfrac{dy}{dx} = \dfrac{d}{dx} (4.5x )\\\\\dfrac{dy}{dx} = 4.5[/tex]
More about the linear system link is given below.
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1. A rectangle has a length of 5cm and a height of 4cm.
a. Find the area of the rectangle
b. Find the perimeter of the rectangle.
c. A scale factor of .5 is used to reduce the rectangle. What is the new area?
d. A scaled factor of 2 is used to increase the triangle. What is the new area?
Answers
Answer:
a
20cm squared
b
18cm
c
5cm
d
80cm
Step-by-step explanation:
a
Area is height multiplied by length in a regular quadrilateral
b
Perimeter is calculated by adding all the sides together
c
0.5 is effectively halving, so instead of 4 multiplied by 5 it is 2 multiplied by 2.5
d
2 is effectively doubling, so instead of 4 multiplied by 5 it is 8 multiplied by 10
Answer:
20 cm²18 cm5 cm²80 cm²Step-by-step explanation:
Q1(a)
Area = length x heightArea = 5 x 4Area = 20 cm²Q1(b)
Perimeter = 2(length + height)Perimeter = 2(5 + 4) = 2(9)Perimeter = 18 cmQ1(c)
New dimensions are : 5/2 = 2.5 and 4/2 = 2New Area = 2.5 x 2New Area = 5 cm²Q1(d)
New dimensions are : 2 x 5 = 10 and 2 x 4 = 8New Area = 10 x 8New Area = 80 cm²The perimeter of a rectangle is 72 cm one side is 3 times the length of the other form an equation and solve for the length and width
Answers
Answer:
2(length) +2(width)=perimeter
2(3(width))+2(width)=72
8×width=72
width=9
length=3×9=27
area=27×9
247=area
Step-by-step explanation:
Expand:
[tex]f(z) = \frac{1}{z(z - 2)} [/tex]
for ;
[tex] |z| > 2[/tex]
Answers
Expand f(z) into partial fractions:
[tex]\dfrac1{z(z-2)} = \dfrac12 \left(\dfrac1{z-2} - \dfrac1z\right)[/tex]
Recall that for |z| < 1, we have the power series
[tex]\displaystyle \frac1{1-z} = \sum_{n=0}^\infty z^n[/tex]
Then for |z| > 2, or |1/(z/2)| = |2/z| < 1, we have
[tex]\displaystyle \frac1{z-2} = \frac1z \frac1{1 - \frac2z} = \frac1z \sum_{n=0}^\infty \left(\frac 2z\right)^n = \sum_{n=0}^\infty \frac{2^n}{z^{n+1}}[/tex]
So the series expansion of f(z) for |z| > 2 is
[tex]\displaystyle f(z) = \frac12 \left(\sum_{n=0}^\infty \frac{2^n}{z^{n+1}} - \frac1z\right)[/tex]
[tex]\displaystyle f(z) = \frac12 \sum_{n=1}^\infty \frac{2^n}{z^{n+1}}[/tex]
[tex]\displaystyle f(z) = \sum_{n=1}^\infty \frac{2^{n-1}}{z^{n+1}}[/tex]
[tex]\displaystyle \boxed{f(z) = \frac14 \sum_{n=2}^\infty \frac{2^n}{z^n} = \frac1{z^2} + \frac2{z^3} + \frac4{z^4} + \cdots}[/tex]
find the value of z
Answers
Check the picture below.
[tex]2x+15~~ = ~~\cfrac{(10x+20)-80}{2}\implies 4x+30=10x-60 \\\\\\ 4x+90=10x\implies 90=6x\implies \cfrac{90}{6}=x\implies \boxed{15=x} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{the whole circle is}}{z + 80 + (10x+20)}~~ = ~~\stackrel{degrees}{360}\implies z+80+[10(15)+20]~~ = ~~360 \\\\\\ z+250=360\implies \blacktriangleright~~ z=110 ~~\blacktriangleleft[/tex]
If the value of x is 15 degrees. Then the measure of the arc z will be 110 degrees.
What is a circle?It is the centre of an equidistant point drawn from the centre. The radius of a circle is the distance between the centre and the circumference.
The diagram is shown below.
[tex]\rm 2x + 15 = \dfrac{10x + 20 - 80 }{2}[/tex]
Then the value of x will be
4x + 30 = 10x - 60
6x = 90
x = 15
Then the value of (10x + 20) will be
(10x + 20) = 10 × 15 + 20
(10x + 20) = 150 + 20
(10x + 20) = 170
Then the measure of the arc z will be
z + 170 + 80 = 360
z = 110
More about the circle link is given below.
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Drag the operations into the order in which they should be performed to evaluate the expression below. 7 × 6 ÷ ( 13 − 10 ) + 4 addition division multiplication subtraction
Answers
First would be subtraction ( do inside parentheses first)
2ndwould be multiplication
3rd would be division
4th would be addition
7 x 6 / (13-10) + 4
7 x 6 / 3 + 4
42 / 3 + 4
14 + 4 = 18
write a growth/decay function to model the situation A car was purchased in 2000 for $22,500. It has depreciated at a rate of 5% per year. What was the value of the car in 2011
Answers
If the price of the car is $22,500 in 2000. Then the value of the car in 2011 with a decay of 5% every year is $12,798.
What is an exponent?Exponential notation is the form of mathematical shorthand which allows us to write complicated expressions more succinctly. An exponent is a number or letter is called the base. It indicates that the base is to raise to a certain power. X is the base and n is the power.
A car was purchased in 2000 for $22,500.
It has depreciated at a rate of 5% per year.
Then the price of the car in 2011 will be
The decay function is modeled as
[tex]\rm A = P(1-r)^t[/tex]
The number of years has been passed is 11.
Then we have
[tex]\rm A = 22,500(1-0.05)^{11}\\\\A = \$ \ 12798[/tex]
More about the exponent link is given below.
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Rewrite the following expression using the properties of loy
log2 z + 2 log2 x+ 4 log9 y + 12 log9 x - 2 log2 y
Answers
[tex]\\ \rm\Rrightarrow log_2z+2log_2x+4log_9y+12log_9x-2log_2y[/tex]
log_a^b=blogalog_a(bc)=log_a b+log_a cSo
[tex]\\ \rm\Rrightarrow log_2z+log_2x^2-log_2y^2+log_9y^4+log_9x^{12}[/tex]
[tex]\\ \rm\Rrightarrow log_2(zx^2)-log_2y^2+log_9(y^4x^{12})[/tex]
[tex]\\ \rm\Rrightarrow log_2\left(\dfrac{zx^2}{y^2}\right)+log_9(y^4x^{12})[/tex]
Answer:
[tex]\log_2\dfrac{x^2z}{y^2}+\log_9x^{12}y^4[/tex]
Step-by-step explanation:
Log laws
[tex]\textsf{Product law}: \quad \log_axy=\log_ax + \log_ay[/tex]
[tex]\textsf{Quotient law}: \quad \log_a\frac{x}{y}=\log_ax - \log_ay[/tex]
[tex]\textsf{Power law}: \quad \log_ax^n=n\log_ax[/tex]
Given expression:
[tex]\log_2z+2\log_2x+4\log_9y+12\log_9x-2\log_2y[/tex]
Group terms with same log base:
[tex]\implies \log_2z+2\log_2x-2\log_2y+4\log_9y+12\log_9x[/tex]
Apply the power law:
[tex]\implies \log_2z+\log_2x^2-\log_2y^2+\log_9y^4+\log_9x^{12}[/tex]
Apply the product law:
[tex]\implies \log_2x^2z-\log_2y^2+\log_9x^{12}y^4[/tex]
Apply the quotient law:
[tex]\implies \log_2\dfrac{x^2z}{y^2}+\log_9x^{12}y^4[/tex]
If f{x)=-4(x-6)+15,what is f(3)?
A -3 B3 C27 D51
Answers
Answer:
C. f(3)=27
Step-by-step explanation:
f(3)=-4(3-6)+15
f(3)=-4(-3)+15
f(3)=12+15
f(3)=27
Step-by-Step Explanation:
=> f(x) = -4(x - 6) + 15
Therefore, f(3) means x = 3.
Substituting the value of ‘x’ :-
=> -4(x - 6) + 15
= -4(3 - 6) + 15
= -4 * 3 + -4 * -6 + 15 (Opening brackets)
= -12 + 24 + 15
= 12 + 15
= 27
Therefore, f(3) = 27
During the first four weeks of her life a baby girl increases her mass from 3.2kg to 4.7th what percentage increase does this represent give your answer to 3 so. F
Answers
Answer:
46.875%
Step-by-step explanation:
increase mass = 4.7 - 3.2 = 1.5kg
percentage increase = 1.5/3.2 = 46.875%
Given the equation y= 1/2x + 9, what is the y-intercept?
Answers
Answer:
9
Step-by-step explanation:
Y intercept when x = 0
Y = 9
where m is slope and b is y-intercept
Hence,
Here given equation: y = ½ x + 9
Identify,
slope: ½ and y-intercept: 9
1, 8, 5, 4, 1, 8, 5, 4 mean media mode
Answers
Answer:
see below
Step-by-step explanation:
mean: 4.5
median: 1,1,4,4,5,5,8,8
mode: 4.5
What is the range of possible values for x?
The diagram is not to scale.
a) 12 < x < 48
b) 0 < x < 10
c) 10 < x < 50
d) 10 < x < 43
Answers
Answer:
option A is the answer of given question 12 less than its greater than 48
An advertisement for a lawn service claims their fertilizer treatment kills weeds in half the
time. When you read the small print at the bottom of the ad, you see that they asked 20 of their
long-term customers to estimate how long it took until their weeds died out before employing
the lawn service. On average, the customers said it took 4 weeks for all the weeds to die before
the service. The company knows that their fertilizer treatment can kill weeds in 2 weeks. Why
is this advertisement misleading?
Answers
The reason why the advertisement misleading is: Number of size which is 20 is a very sample size to make this conclusion valid.
What is advertisement?Advertisement can be defined as the process of creating awareness about a product so as to increase sales.
Based on the given scenario the advertisement is misleading based on the following reasons:
The sample size which is 20 is a very small sample size to make this conclusion valid. The customers said it will take 4 weeks for all the weeds to die before while the company on the other hand knew that the fertilizer treatment can kill weeds in 2 weeks.Therefore The reason why the advertisement misleading is: Number of size which is 20 is a very sample size to make this conclusion valid.
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whats the perimeter of the figure square with 3 semi circles? rounded to the nearest 100th
Answers
Answer:
3.1415
×=18
×=(2)
2 If you need something else?
can you please help me I give you extra points
Answers
Answer:
( -2 , 0 ) , (1 , 0 ) , (-2 , 3 )
I'm pretty sure on this!
So I’m stuck on these 3 problems can anyone help me? If you can pls simplify the problems are: 20/26 ÷ 5 =? 28/56 ÷ 2 =? 75/90 ÷ 3 =?
Answers
Answer:
2/13 or 0.15 , 1/4 and 5 /18 or 0.28
Step-by-step explanation:
20/26 ÷ 5 =?
10/13 ÷ 5 = 2/13 or 0.15
28/56 ÷ 2 =?
1/2 ÷ 2 = 1/4
75/90 ÷ 3 =?
5/6 ÷ 3 =5 /18 or 0.28
a pet store has 2 gray rabbits. one eight of the rabbits at the pet store are gray. how many rabbits does the pet store have?
Answers
2 = 1/8
2 x 8 = 16
16 = 8/8
2 gray rabbits is 1/8 of 16. The store has 16 rabbits.
because if 2 rabbits are gray. and is those two = 1 eighth. then two rabbits would equal 1 out of eight. so whats two x eight? 16. it just seems like the logical answer.
Joshua wants to buy a pair
of jeans for $45.00. The tax
rate is 3.4%. If Joshua has
$50, does he have enough
money to pay for the jeans?
Justify your answer.
Answers
Answer:
yes
Step-by-step explanation:
3.4% = .034
.034 x 45 = 1.53
1.53$ + 45$ = 46.53$
46.53$ > 50
yes, he dose have enough money
A wiring job requires 5,127 feet of cable. If the cable comes in 250-foot coils, how many coils of cable are required?
Answers
Answer:
20.58 (21)
Step-by-step explanation:
5127/250 = 20.58
if the coils are only be imported in full form your gonna need 21
Answer:
21 cables
Step-by-step explanation:
Because the cables come in 250-foot coils, you cannot have a piece of one cable. So, if you take the total amount of cable you need (5,127 feet) and divide it by how long a single cable is (250 feet).
5,127 divided by 250 is 20.508, but you cannot have a piece of one cable. So, you round up to the nearest whole number, 21.
y =x- 6 intercept with graph
Answers
Answer:
y-intercept, when x = 0, y = -6
x-intercept, when y = 0, x = 6
Step-by-step explanation:
y-intercept, when x = 0, y = -6
x-intercept, when y = 0, x = 6
please help! will give brainliest!
Answers
Arc PL = 62
Arc QPS = 258
Explanation:
17. 5x-19 = 2x+11
18. 16x - 28 = 180.
What type of answers to open questions require?
A. A written response
B. A long speech in response
C. Encourage more detail answers
D. Short answers
Answers
Answer:
a. written response
Step-by-step explanation:
an open question uses what the reader gathers :)