Answer:
3rd option (top right)
Step-by-step explanation:
3rd option represents a linear equation
y = -2x-1
Answered by GAUTHMATH
A half-century ago, the mean height of women in a particular country in their 20s was inches. Assume that the heights of today's women in their 20s are approximately normally distributed with a standard deviation of inches. If the mean height today is the same as that of a half-century ago, what percentage of all samples of of today's women in their 20s have mean heights of at least inches?
Answer:
0.26684
Step-by-step explanation:
Given that :
Mean, μ = 62.5
Standard deviation, σ = 1.96
P(Z ≥ 63.72)
The Zscore = (x - μ) / σ
P(Z ≥ (x - μ) / σ)
P(Z ≥ (63.72 - 62.5) / 1. 96) = P(Z ≥ 0.6224)
P(Z ≥ 0.6224) = 1 - P(Z < 0.6224)
1 - P(Z < 0.6224) = 1 - 0.73316 = 0.26684
In each following find x. Leave answer in simplified radical form.
Which of the following pairs of functions are inverses of each other?
O A. f(x) = 8x? - 10 and g(x) = x +10
8
B. f(x) = {+8 and g(x) = 2x - 8
O C. f(x) = 18 - 9 and g(x) =
O D. f(x) = 3x2 +16 and g(x) = -
18
X+9
16
Answer:
A is the answer I guess so...
The functions f(x) = 18/x -9 and g(x) = 18/x+9 are inverse to each other.
What is a function?A relation is a function if it has only One y-value for each x-value.
The given function f(x)= 18/x - 9
Let us replace f(x) by y
y=18/x - 9
Now x=18/y-9
Add 9 on both sides
x+9=18/y
Apply cross multiplication
y(x+9)=18
Divide both sides by x+9
y=18/(x+9)
f⁻¹(x)=18/(x+9)
Hence, the functions f(x) = 18/x -9 and g(x) = 18/x+9 are inverse to each other.
To learn more on Functions click:
https://brainly.com/question/30721594
#SPJ7
At a charity ball, 800 names are put into a hat. Four of the names are identical. On a random draw, what is the probability that one of these four names will be drawn?
A. 0.004.
B. 0.005.
C. 0.010.
D. 0.025.
Answer b
Step-by-step explanation:
800 divided by 4 is 200, and 1/200 is 0.5 and that as a percent is 0.005
William's assembly unit has decided to use a p-Chart with 2-sigma control limits to monitor the proportion of defective castings produced by their production process. The quality control manager randomly samples 150 castings at 10 successively selected time periods and counts the number of defective castings in the sample.
Sample Defects
1 9
2 14
3 9
4 9
5 13
6 8
7 12
8 10
9 12
10 11
Required:
a. What is the Center Line of the control chart?
b. What value of z should be used to construct the control chart?
c. What is the Upper Control Limit?
d. What is the Lower Control Limit?
Answer: attached below is the missing p chart
a) 0.07133
b) 2
c) 0.098
d) 0.045
Step-by-step explanation:
sample size = 150 castings
number of periods = 10
a) Determine the center Line of the control chart
( 0.06 + 0.0933 + 0.06 + 0.06 + 0.0867 + 0.0533 + 0.08 + 0.067 + 0.08 + 0.073) / 10
mean = 0.07133
standard deviation = 0.01335
b) Determine the value of Z to be used
Given that we are using 2sigma limits .
the value of Z to be used = 2
c) Upper limit control
= mean value + z-value * std
= 0.0713 + 2*0.01335 = 0.098
d) Lower Control Limit
= mean value - z-value * std
= 0.0713 - 2*0.01335 = 0.045
I need help with this assignment. This is the last one for the year so I can get my geometry credit! Thank you to anyone who chooses to help!
Answer:
i can help u just give me the work
Step-by-step explanation:
Which explains whether or not the graph represents a direct variation?
Answer:
The slope is 3 and equation of the line is y=3x. I think the answer is the 1st option
Step-by-step explanation:
Given:
y=3x
Direct variation equations have the form:
y=kx,
where
k is the constant of proportionality
so k=3
Assume that the wavelengths of photosynthetically active radiations (PAR) are uniformly distributed at integer nanometers in the red spectrum from 640 to 680 nm. What is the mean and variance of the wavelength distribution for this radiation?
Im new and i need your help so please help me!!
Answer:
it's true
Step-by-step explanation:
To factorise you need to work out a number that add up to the number with a letter and multiply to the last number
A random sample of 10 sales receipts for internet sales results in a mean sale amount of $66.30 with a standard deviation of $15.75. Using this data, find the 98% confidence interval for the true mean difference between the mean amount of mail-order purchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval.
Answer:
ur mum s house
Step-by-step explanation:
myueudifigkgkgogkvkcv
What is the area of the triangle formed from (0,-3), (0,4), and (4,-3)?
A. 24 square units
B. 48 square units
C. 14 square units
O D. 6 square units
someone please help asap
Answer:
(r/s)(6) = r(6)/s(6) = 3(6)-1 / 2(6)+1 = 18-1 / 12+1 = 17/3
So basically the first one is the correct answer.
Step-by-step explanation:
I hope this helped and please kindly mark Brainliest. Thank You <3
Fun Exercise: The investigator is tracking a jewelry thief's past trips in order to find and recover jewelry that was left behind in six cities. Each city was visited only once. Can you put together the travel timeline, using the information below?
1. The trip began and ended in the two cities closest to the equator.
2. The two cities in Europe were not visited back to back.
3. The thief visited New York City sometime before Bogata.
4. After visiting London, the thief visited one other city before visiting Nairobi.
5. Singapore was visited sometime before Paris.
Brainiest to the one who answers first and correctly, thanks!
Answer:
Singapore - Paris - New York - London - Bogota - Nairobi
Step-by-step explanation:
The cities are New York City, London, Bogota, Nairobi, Singapore and Paris.
1. The trip began and ended in the two cities closest to the equator.
2. The two cities in Europe were not visited back to back
3. The thief visited New York City sometime before Bogota.
4. After visiting London, the thief visited one other city before visiting Nairobi.
5. Singapore was visited sometime before Paris.
-The two cities closest to the equator are Singapore and Nairobi.
-Therefore, the trip started in Singapore and ended in Nairobi, and London was the fourth.
-As London was fourth, Paris was the second.
find the area of a semicircle whose radius is 2.4 cm
Answer:
15.072
Step-by-step explanation:
Pls Mark Brainiest okay
Answer:
2.88 pi or approximately 9.0432 cm^2
Step-by-step explanation:
The area of a semicircle is 1/2 the area of a circle
A = 1/2 pi r^2
A = 1/2 pi ( 2.4)^2
A = 2.88 pi cm^2
If we use 3.14 as an approximation for pi
A = 2.88 * 3.14
A =9.0432 cm^2
Explain how to factor the following examples.
A). 4x^4+10x^3+2^2
B). X^2+13x+42
Answer:
A). 2x^2(2x^2 + 5x + 1)
B). (x + 6)(x + 7)
Step-by-step explanation:
A). 4x^4+10x^3+2^2
I assume the problem is
4x^4 + 10x^3 + 2x^2
Look at he number parts, 4, 10, 2. They have a common factor of 2.
Now look at the variable parts, x^4, x^3, x^2. They have a common factor of x^2.
We factor out 2x^2 from every term.
4x^4 + 10x^3 + 2x^2 =
= 2x^2(2x^2 + 5x + 1)
B). x^2 + 13x + 42
We need to find two numbers whos product is 42 and whose sum is 13. The numbers are 6 and 7.
x^2 + 13x + 42 =
= (x + 6)(x + 7)
Question 1 of 5
A community orchestra is losing money. They have always sold tickets for
$12, but they decide to increase the price by $3. For their next concert, they
sell 200 tickets at the increased price.
Select the expression representing the amount of money earned from ticket
sals.
A. 200(12-3)
B. 200(12) + 3
C. 200(12+3)
D. 200(12) - 3
Answer:
200 (12+3)
Step-by-step explanation:
They sold 200 tickets at a price of (12+3)
200 (12+3)
URGENT PLZ HELP
Find the arc length of semi circle with diameter of 18
Answer:
Step-by-step explanation:
The formula to find arc length is
[tex]AL=\frac{\theta}{360}*\pi d[/tex] where theta is the measure of the central angle and d is the diameter. If we are dealing with a semicircle, the measure of the central angle is 180 degrees. Filling in:
[tex]AL=\frac{180}{360}*\pi (18)[/tex] which simplifies a bit to
[tex]AL=\frac{1}{2}*\pi (18)[/tex] and a bit more to
AL = 9π. That answer is obviously in terms of π; if you need it in terms of whatever your measurement is (feet, inches, cm, etc.) the answer would be, rounded to the nearest tenth, 28.3 units
its not telling me how to do this, please help
Step-by-step explanation:
Actually, it tells you exactly what to do.
First, translate, i.e., move over, the coordinates up by 3:
[tex](1, 4)\rightarrow (1+3, 4+3) = (4, 7)[/tex]
Then reflect this point about the x-axis and to do this,
[tex](x, y) \rightarrow (x, -y)[/tex]
[tex](4, 7) \rightarrow (4, -7)[/tex]
1/4 + 4/10 what is the answer plz give correct
Answer:
0.65 is the correct answer
Step-by-step explanation:
hopes it helps
Hi there!
»»————- ★ ————-««
I believe your answer is:
[tex]\boxed{\frac{13}{20}}[/tex]
»»————- ★ ————-««
Here’s why:
⸻⸻⸻⸻
[tex]\boxed{\text{Calculating the answer...}}\\\\\frac{1}{4} +\frac{4}{10}\\------------\\LCM(4,10) = 20\\\\\rightarrow \frac{1}{4}=\frac{1*5}{4*5} = \frac{5}{20}\\\\\rightarrow \frac{4}{10}=\frac{4*2}{10*2}=\frac{8}{20}\\\\\\\rightarrow\frac{5}{20}+ \frac{8}{20} = \boxed{\frac{13}{20}}\\\\\\\text{The answer is in it's simplest form.}[/tex]
⸻⸻⸻⸻
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.
Brendan has $65 worth of balloons and flowers delivered to his mother. He pays the bill plus an 8.5% sales tax and an 18% tip on the total cost including tax. He also pays a $10 delivery fee that is charged after the tax and tip. How much change does he receive if he pays with two $50 bills? Round to the nearest cent.
Answer:
its 6.78 i believe
Step-by-step explanation:
7/9 - 2/3 and 2/3 - 1/6
Answer:
The answer is 1/9 and 1/2
See above. okokokoookkokokokokkkkokokkokokkok
Answer:
B
Step-by-step explanation:
B is the correct answer
Pls answer this 7th question in full explanation
Answer:
80
Step-by-step explanation:
Objective: Supplementary Angles.
Supplementary Angles are Angles that add up to 180.
In the problem, Two angles add up to 180. We don't know Angle A and we know Angle B.
Let set up the equation
Let x represent the measure of Angle A and x+20 represent the measure of Angle B
[tex]x + x + 20 = 180[/tex]
Combine Like Terms
[tex]2x + 20 = 180[/tex]
Apply Basics Rules of Algebra
[tex]2x = 160[/tex]
[tex]x = 80[/tex]
This means angle A measure 80 degrees
Couldn’t figure this out, please help
(A)
Step-by-step explanation:
This system of equations will no solution if they have the same slope and only differ in the y-intercept values. So let's rewrite the two equations into their slope-intercept forms:
[tex]y = \frac{3}{h-2}x + 5[/tex]
[tex]y = \frac{8}{h}x + \frac{5}{h}[/tex]
For them to have no solution, their slopes must equal each other:
[tex]\dfrac{3}{h-2} = \dfrac{8}{h} \Rightarrow 3h=8h-16[/tex]
or
[tex]h = \dfrac{16}{5}[/tex]
Putting this value into our system of equations, we get
[tex]y = \frac{5}{2}x + 5[/tex]
[tex]y = \frac{5}{2}x + \frac{25}{16}[/tex]
This is a system of equations consisting of two parallel lines and as such, do not intersect and so, no solution.
For 0 less than or equal to theta less than 2(pi), what are thebsolutions to sin↑2(theta)=2(sin↑2)(theta/2)?
I assume the up arrows are supposed to indicate exponents, so that the equation is
sin²(θ) = 2 sin²(θ/2)
Recall the half-angle identity for sine,
sin²(θ/2) = (1 - cos(θ))/2,
as well as the Pythagorean identity,
sin²(θ) + cos²(θ) = 1
Rewrite the equation in terms of cosine and solve:
1 - cos²(θ) = 1 - cos(θ)
cos²(θ) - cos(θ) = 0
cos(θ) (cos(θ) - 1) = 0
cos(θ) = 0 or cos(θ) - 1 = 0
cos(θ) = 0 or cos(θ) = 1
[θ = arccos(0) + 2nπ or θ = arccos(0) - π + 2nπ] or
… … … [θ = arccos(1) + 2nπ]
(where n is any integer)
[θ = π/2 + 2nπ or θ = -π/2 + 2nπ] or [θ = 2nπ]
In the interval 0 ≤ θ < 2π, we get the solutions θ = 0, π/2, and 3π/2.
(That is, for n = 0 in the first and third solution families, and n = 1 in the second family.)
To make concrete, the ratio of cement to sand is 1 : 3. If cement and sand are sold in bags of equal mass, how many bags of cement are required to make concrete using 15 bags of sand?
Answer:
5 bags of cement are required.
Step-by-step explanation:
Since to make concrete, the ratio of cement to sand is 1: 3, if cement and sand are sold in bags of equal mass, to determine how many bags of cement are required to make concrete using 15 bags of sand the following calculation must be done:
Cement = 1
Sand = 3
3 = 15
1 = X
15/3 = X
5 = X
Therefore, 5 bags of cement are required.
find the missing side lengths
Answer:
x = 11 * sqrt(2)
y = 11
Step-by-step explanation:
Use the ratios of the lengths of the sides of a 45-45-90 triangle.
y = 11
x = 11 * sqrt(2)
In another case, p and 2p are the first and second term respectively of an arithmetic progression. The nth term is 336 and the of the first n terms is 7224. Write down two equations in n and p and hence find the values of n and p
Consecutive terms in this sequence differ by p.
First term: p
Second term: p + p = 2p
Third term: 2p + p = 3p
and so on. It follows that the n-th term satisfies
np = 336
Presumably you meant to say the "sum of the first n terms" is 7224, which is to say
p + 2p + 3p + … + np = 7224
which can be rewritten as
p (1 + 2 + 3 + … + n) = 7224
p (n (n + 1)/2) = 7224
n (n + 1) p = 14,448
Substitute the first equation in the second one and solve for n :
336 (n + 1) = 14,448
n + 1 = 43
n = 42
Now solve for p :
42p = 336
p = 8
please help
Find the missing side of this right
triangle.
X
7
12
X
= [?]
Answer:
13.9 (if x is the Hypotenuse)
Step-by-step explanation:
which one is the Hypotenuse (the side opposite of the 90 degree angle) ?
because that determines the calculation.
if x is the Hypotenuse then Pythagoras looks like this
x² = 7² + 12² = 49 + 144 = 193
x = sqrt(193) = 13.9
if 12 is the Hypotenuse, then it looks like this
12² = 7² + x²
144 = 49 + x²
95 = x²
x = sqrt(95) = 9.75
hope anyone help me please
Answer:
<
<
>
<
>
Step-by-step explanation:
-12<-4
-15<-2
-7>-29
0<20
-101>-159
Answer:
(a) (-8)+(-4) < (-8)-(-4)
(b) (-3)+7-(19) < 15-8+(-9)
(c) 23-41+Il > 23-41-11
(d) 39+(-24)-(15) < 36+(-52)-(-36)
(e)-231+79+51 >-399+159+81
note:
-1 is greater than-20