Answer:
1 3 5
Step-by-step explanation:
At the beginning of a certain study of a group of persons, 15% were classified as heavy smokers, 30% as light smokers, and 55% as nonsmokers. In the five-year study, it was determined that the death rates of the heavy and light smokers were five and three times that of the nonsmokers, respectively. A randomly selected participant died over the five-year period: calculate the probability that the participant was a nonsmoker.
The probability that the participant was a nonsmoker is 25%.
ProbabilityGiven that at the beginning of a certain study of a group of persons, 15% were classified as heavy smokers, 30% as light smokers, and 55% as nonsmokers, and in the five-year study, it was determined that the death rates of the heavy and light smokers were five and three times that of the nonsmokers, respectively, to calculate, if a randomly selected participant died over the five-year period, the probability that the participant was a nonsmoker, the following calculation must be performed:
15 x 5 = 7530 x 3 = 9055 = 5555 + 90 + 75 = 220220 = 10055 = X55 x 100 / 220 = x5500 / 220 = X25 = XTherefore, the probability that the participant was a nonsmoker is 25%.
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NO LINKS!!! Solve each triangle. Part 2a
NOT A MULTIPLE CHOICE
1a. A= 40°, B= 20, a= 2
2b. A= 50°, C= 20°, a= 3
3c. B= 70°, C= 10°, b= 5
4d. A= 70°, B= 60°, c= 4
Answer:
Sum of interior angles of a triangle = 180°
Sine rule to find side lengths:
[tex]\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}[/tex]
----------------------------------------------------------------------
Question 1a
Given: A = 40°, B = 20°, a = 2
40° + 20° + C = 180°
⇒ C = 120°
[tex]\dfrac{2}{\sin 40}=\dfrac{b}{\sin 20}=\dfrac{c}{\sin 120}[/tex]
[tex]\implies b=\sin20 \cdot\dfrac{2}{\sin 40}=1.064177772...[/tex]
[tex]\implies c=\sin 120 \cdot \dfrac{2}{\sin 40}=2.694592711...[/tex]
----------------------------------------------------------------------
Question 2b
Given: A = 50°, C = 20°, a = 3
50° + 20° + B = 180°
⇒ B = 110°
[tex]\dfrac{3}{\sin 50}=\dfrac{b}{\sin 110}=\dfrac{c}{\sin 20}[/tex]
[tex]\implies b=\sin 110 \cdot\dfrac{3}{\sin 50}=3.680044791...[/tex]
[tex]\implies c=\sin 20 \cdot\dfrac{3}{\sin 50}=1.339426765...[/tex]
----------------------------------------------------------------------
Question 3c
Given: B = 70°, C = 10°, b = 5
70° + 10° + A = 180°
⇒ A = 100°
[tex]\dfrac{a}{\sin 100}=\dfrac{5}{\sin 70}=\dfrac{c}{\sin 10}[/tex]
[tex]\implies a=\sin 100 \cdot \dfrac{5}{\sin 70}=5.240052605...[/tex]
[tex]\implies c=\sin 10 \cdot \dfrac{5}{\sin 70}=0.9239626545...[/tex]
----------------------------------------------------------------------
Question 4d
Given: A = 70°, B = 60°, c = 4
70° + 60° + C = 180°
⇒ C = 50°
[tex]\dfrac{a}{\sin 70}=\dfrac{b}{\sin 60}=\dfrac{4}{\sin 50}[/tex]
[tex]\implies a=\sin 70 \cdot \dfrac{4}{\sin 50}=4.906726388...[/tex]
[tex]\implies b=\sin 60 \cdot \dfrac{4}{\sin 50}=4.522063499...[/tex]
The area of a trapezoid is 30 cm². If the bases measure 9 cm and 11 cm, what is the height of the trapezoid?
Answer:
3cm
Step-by-step explanation:
uhh i drew it but i cant show picture hope this is right tho!!!
The area of a triangle is 64 in2. The base of the triangle is twice as long as the height. The base of the triangle is and the height of the triangle is
Answer:
Step-by-step explanation:
Area=bh/2=64, b=2h --->h2=64 --> h=8 (positive root) and b=16.
Cindy is driving 345 miles. She put 16 gallons in her car to fill it up. What is her average MPG?
21.5
16
18.75
20
Answer:
MPG is miles per gallon so we just need to divide the miles by the gallons
345/16=21.56
so i guess a?
i mean thats rounded wrong but its the closes one
a
Hope This Helps!!!
Can anyone tell me why I got this wrong?
-3(x+2)>15 or x-3 ≤ -1
my answer was ( -7, 2 )
The options are
A. ( - infinity, 2)
B. (-7, -2)
C. [ - 7, infinity)
D. ( -7, 2)
Answer:
The answer should be A. [tex]x \in (-\infty,\, 2)[/tex].
Step-by-step explanation:
Start with the second inequality, which is more straightforward than the first. Add [tex]3[/tex] to both sides of this equation to separate [tex]x[/tex] from the numbers:
[tex]x - 3 + 3 \le -1 + 3[/tex]. The direction of the inequality sign shall stay the same.
[tex]x \le 2[/tex].
On the other hand, simplifying the first inequality takes a bit more work. Start by dividing both sides by [tex](-3)[/tex]. However, keep in mind that dividing or multiplying both sides of an inequality with a negative number will invert the direction of the inequality sign. For example, the left-hand side of an inequality might have been greater than the right-hand side. When both sides are multiplied with a number less than zero, the new left-hand side would become smaller than the new right-hand side.
Because [tex](-3)\![/tex] is a negative number, dividing both sides of the first inequality inequality by [tex](-3)[/tex] will turn the "greater-than" sign into a "less-than" sign.
The inequality used to be:
[tex]-3\, (x + 2) > 15[/tex].
After dividing both sides by the negative number [tex](-3)[/tex], it becomes:
[tex]\displaystyle \frac{(-3)\, (x + 2 )}{(-3)} < \frac{15}{(-3)}[/tex].
[tex]\displaystyle (x + 2) < -5[/tex].
[tex]x < -7[/tex].
The question connected the two original inequalities with "or". Therefore, the conditions will be satisfied as long as either of at least one of the two inequalities is true. Note, that [tex]x < 2[/tex] is true whenever [tex]x <-7[/tex] is true. Therefore, any real number that is smaller than [tex]2[/tex] will meet the requirements- not just those that are smaller than [tex](-7)[/tex].
The corresponding interval will be [tex](-\infty,\, 2)[/tex].
The graph of the parent functions f(x)=x^3 is translated to form g(x)=(x-7)^3+9. The point (0,0) on the graph of f(x) corresponds to which point on the graph of g(x)
Answer:
(7, 9)
Step-by-step explanation:
The (x-7) indicates that the graph will be shifted to the RIGHT 7 units. The +9 at the end of the equation means the graph will be shifted UP 9 units.
So the point (0,0) will land at (7,9)
Question 5
Simplify x2-9 / x+3
Answer:
my 8k is a responsibility to ensure the correct
Step-by-step explanation:
I hope personally is am jare for you and I hope that it is possible that I
How do I find the value of X
Answer:
x = 12
Step-by-step explanation:
ΔABC is a right triangle, therefore we can use Pythagoras' Theorem to find the value of x.
Pythagoras' Theorem: a² + b² = c²
(where a and b are the legs, and c is the hypotenuse, of a right triangle)
Therefore,
a = xb = 16c = 20Substitute these values into the equation and solve for x:
⇒ x² + 16² = 20²
⇒ x² + 256 = 400
⇒ x² = 400 - 256
⇒ x² = 144
⇒ x = √(144)
⇒ x = ±12
As length is positive, x = 12 units (only)
What is the image of (6,-4)after a reflection over the y-axis?
Answer:
-6 -4
Step-by-step explanation:
Which of the following is the inverse of f(x) = 3-x/5
Answer:
The correct answer is, F-1(x) = 5(x-3)/3
Step-by-step explanation:
The inverse of given function f(x) = 3-x/5 would be equal to 3(x - 5)/5
What is the inverse of a function?Suppose that the given function is [tex]f:X\rightarrow Y[/tex]Then if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is ;
[tex]f^{-1}: Y \rightarrow X[/tex]
We have been given a function of x as ; 3-x/5.
To find the inverse we will just switch x and function of x with each other.
That means we have;
x = 5/3 f(x) + 5
5/3 f(x) = x - 5
f(x) = 3(x - 5)/5
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The area of a circle is 65.71cm2.
Find the length of the radius rounded to 2 DP.
Answer:
5 cm
Step-by-step explanation:
Area of a circle: [tex]\pi r^{2}[/tex] {r=radius}
[tex]\pi r^2=65.71cm2[/tex]
[tex]r^2=65.71/3.14[/tex] [tex](\pi =3.14)[/tex]
[tex]r^2=20.92[/tex]
[tex]r=\sqrt{20.92} =4.57cm[/tex]
[tex]r=4.57=5cm[/tex]
[tex]r=5cm[/tex]
[RevyBreeze]
A random number generator is used to select a number from 1 to 100. What is the probability of selecting an even number
Answer:
There is a 50% chance that the random number generator picks an even number
Step-by-step explanation:
Out of all the numbers between 1 and 100, 50 out of the 100 numbers are odd and 50 out of the 100 numbers are even.
write the equation of the line in standard form with an x intercept of -7 and a y intercept of 10
Answer:
4x + 7y - 28 = 0
Step-by-step explanation:
You need a 40% alcohol solution. On hand, you have a 540 mL of a 10% alcohol mixture. How much pure alcohol will you need to add to obtain the desired solution?
Answer:
270 mL of pure alcohol is needed.
Step-by-step explanation:
In 540 mL of the mixture, you have 540*10% = 54 mL of pure alcohol.
If you add x mL pure alcohol, then you have (540 + x) mL solution, in it there is (54 + x) mL of pure alcohol
so (54 + x)/(540 + x) = 40%
Then
54 + x = 0.4(540 + x)
54 + x = 216 + 0.4 x
0.6x = 216 - 54 = 162
x = 162/0.6 = 270 mL
If The perimeter of a square is 48 meters what is the length of the diagonal
Answer:
approximately 17
Step-by-step explanation:
Answer:
16.97m
Step-by-step explanation:
We know that, all the 4 sides of a square are equal.
Given that,
Perimeter of the square is 48m
First, let us find the length of a side the square.
For that, let the length of a side be x.
Therefore,
x + x + x + x = 48
4x = 48
Divide both sides by 4.
x = 12 m
Now let us find the length of the diagonal using Pythagorean theorem.
For that let the length of the diagonal be y.
So,
12² + 12² = y²
144 + 144 = y²
288 = y²
√288 = y
16.97 m = y
Therefore,
The length of the diagonal is 16.97m
For what value of x is the given parallelogram a rhombus ?
Answer:
x = 6
Both the angles are equal
7x + 4 = 9x - 8
9x - 7x = 4 + 8
2x = 12
x = 6
Solution:
We know that:
Both angles are equivalent.This means that:
[tex](7x + 4) = (9x - 8)[/tex]Step-by step calculations:
Open the parenthesis:
[tex](7x + 4) = (9x - 8)[/tex]=> [tex]7x + 4 = 9x - 8[/tex]Subtract 7x both sides:
=> [tex]7x - 7x + 4 = 9x - 8 - 7x[/tex]=> [tex]4 = 2x - 8[/tex]Add 8 both sides:
=> [tex]4 + 8 = 2x - 8 + 8[/tex]=> [tex]12 = 2x[/tex]Divide 2 both sides:
=> [tex]\frac{12}{2} = \frac{2x}{2}[/tex]=> [tex]x = 6[/tex]Solve the Proportion . Solve for X .
Answer:
where where is it
Step-by-step explanation:
Answer:
x=10
Step-by-step explanation:
Workout the solution for the equation: 3a = 15
Please help as soon as possible :D
Answer:
a = 5
Step-by-step explanation:
a = 5
all you have to do is divide both sides by 3
Answer:
A=5
Step-by-step explanation:
Divide each term by 3 and simplify :)
Hope I helped!
Please help I'll mark brainliest
Answer:
The correct answer is 2:1 :)
Answer:
4:2
Step-by-step explanation:
Give 0.25ml twice a day for 8 days what is the quantity to dispense
Answer:
4 mL
Step-by-step explanation:
Multiply .25 by 2 because you are dispensing it twice a day.
.25 x 2 = .5, so you dispense .5 mL a day.
Now, multiply .5 mL a day x 8 days.
.5 x 8 = 4
Therefore, you should dispense 4 mL.
A tank contains 340 liters of water when it begins to leak at a rate of 6 liters per minute into an empty container. Which equation shows the number of minutes, x, it will take for the tank and
the container to have the same amount of water?
The equation that shows the number of minutes, x, it will take for the tank and the container to have the same amount of water will be 340 - 6x = 6x.
Based on the information given, the equation that shows the number of minutes, x, it will take for the tank and the container to have the same amount of water will be 340 - 6x = 6x. Therefore, the number of minutes will be:
340 - 6x = 6x
Collect like terms
340 = 6x + 6x
340 = 12x
x = 340/12
x = 28.33 minutes.
In 28.33 minutes, they'll have the same content.
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you built like this lollllllllllllllllll
Answer:
yes i am
Step-by-step explanation:
thank you for noticing my style
How do I find the left side of BC
"bc is twice half of angle D"
Please answer the questions below:
1. 3(16x+2)
2. 2(18+24x)
3. 4(12x+8)
4. 6(6+8x)
Thanks for helping♥️
Answer:
1. 48x+6
2.36+48x
3.48x+32
4.36+48x
I think it will help you.
Find the perimeter 4cm 8 cm 4cm
Answer:
perimeter= a+b+c
Step-by-step explanation:
perimeter= 4+8+4= 16cm
Help help math math math
Answer:
[tex]\displaystyle y = -3x + 9[/tex]
Step-by-step explanation:
First, find the rate of change of the line:
[tex]\displaystyle \frac{-y_1 + y_2}{-x_1 + x_2} = m \\ \\ \frac{-6 + 3}{-1 + 2} = m \hookrightarrow \frac{-3}{1} = m \\ \\ \boxed{-3 = m}[/tex]
_______________________________________________
Now plug all the information into the Slope-Intercept Formula. It does not matter which ordered pair is chosen:
[tex]\displaystyle 3 = -3[2] + b \hookrightarrow 3 = -6 + b; 9 = b \\ \\ \boxed{\boxed{y = -3x + 9}} \\ \\ OR \\ \\ 6 = -3[1] + b \hookrightarrow 6 = -3 + b; 9 = b \\ \\ \boxed{\boxed{y = -3x + 9}}[/tex]
I am joyous to assist you at any time.
Answer:
to much math
Step-by-step explanation:
shapes th
7. Hilary flew from Denver to Atlanta for
business. From Atlanta, she flew to Chicago
to visit her aunt. From Chicago, she flew
back home to Denver. Classify the triangle
made by her complete flight path.
this pro
8. How many miles complete the triangle made
by Hilary's flight path?
7 and 8 please
Hilary trip is an illustration of a scalene triangle
The triangle that represents Hilary's trip can be classified as a scalene triangleHilary completed 2717 milesClassify the triangleThe triangle that represents Hilary's trip can be classified by the side lengths.
From the figure, the side lengths of the triangles are:
919 miles, 586 miles and 1212 miles
The lengths are not equal.
Triangles that do not have equal side lengths are scalene triangles
Hence, the triangle that represents Hilary's trip is a scalene triangle
The miles completed by HilaryTo do this, we simply calculate the perimeter of the triangle.
So, we have:
P = 919 miles + 586 miles + 1212 miles
P = 2717 miles
Hence, Hilary completed 2717 miles
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1. The data set represents the amounts of time (in minutes) spent watching
online videos each day for a random sample of 30 college students.
Assume the population standard deviation is 2.4 minutes. (Adapted from
the Council for Research Excellence)
5.0 6.25 8.0 5.5 4.75 4.5 7.2 6.6 5.8
4.2 5.4 6.75 9.8 8.2 6.4 7.8 6.5 5.5
3.8 6.75 9.25 10.0 9.6 7.2 6.4 6.8 9.8 10.2
(a) Find the point estimate of the population mean.
(b) Find the margin of error for a 95% confidence level.
(c) Construct a 95% confidence interval for the population mean.
Interpret the results.
5.5
6.0
Never gonna give you up, never gonna let you down, never gonna run around and dessert you.
PLEASE HELP!!!!!! ILL GIVE BRAINLIEST *EXTRA POINTS** !! DONT SKIP :((