Answers
Related Questions
A quality control engineer tests the quality of produced computers. suppose that 5% of computers have defects, and defects occur independently of each other.
a. what is the expected number of defective computers in a shipment of twenty? 1
b. find the probability of exactly 3 defective computers in a shipment of twenty.
Answers
For n=20, p=0.05,
the mean number of defects is np=20*0.05=1
[tex]P(x)=C(n,x)p^x(1-p)^{n-x}[/tex]
[tex]P(X=3)=C(20,3)0.05^3(1-0.05)^{20-3}[/tex]
[tex]=1140(1.25*10^{-4}(0.41812)[/tex]
[tex]=0.05958[/tex]
Answer: probability of exactly 3 defects in a sample of 20 is 0.05958
What is the approximate distance between the points (-5, 1) and (-2, 3) on a coordinate grid? A.7.81 units B.3.61 units C.2.23 units D.3.32 units
Answers
[tex] \sqrt{(x2 - x1) {}^{2} + (y2 - y1) {}^{2} } [/tex]
Where 1 and 2 stands for the points, so in your case the formula is the following
[tex] \sqrt{( - 2 - - 5) {}^{2} + (3 - 1) } [/tex]
[tex] \sqrt{ {3}^{2} + 2 {}^{2} } [/tex]
[tex] \sqrt{9 + 4} [/tex]
[tex] \sqrt{13} =3.605...[/tex]
So your answer is about 3.61
Answer:
3.61
Step-by-step explanation:
Would you expect a scatterplot comparing speed of a car in time it takes to drive 10 miles to show a positive association a negative association or no association explain you’re thinking
Answers
what is r divided by 8
Answers
r/8
the segments shown below could form a triangle ac=9. cb=8. ba=17
Answers
Here 9+8=17 (not greater), so these segments do not form a triangle.
No, the triangle can not form.
What is Triangle inequality?The sum of any two sides of a triangle is greater than the third side.
Given:
ac=9. cb=8. ba=17
The question is attached below.
We know each triangle satisfy the triangle inequality which state that the sum of the two shorter sides must exceed the length of the third side.
But ,9+8=17 which equal to the third side .
So, these segments do not form a triangle.
Learn more about triangle inequality here:
https://brainly.com/question/1163433
#SPJ5
Dr. Silas studies a culture of bacteria under a microscope. The function b(t)=50(1.4)^t represents the number of bacteria t hours after Dr. Silas begins her study.
a) What is the y-intercept of the function? What does this mean in the context of the problem?
b) Is this exponential growth or decay? How do you know?
c) How many bacteria would there be 5 hours after Dr. Silas began her study?
Please show all your work!
Answers
[tex]b(t)=50(1.4) ^{t} [/tex]
[tex]b(0)=50(1.4)^{0} [/tex]
[tex]b(0)=50(1)[/tex]
[tex]b(0)=50[/tex]
We can conclude that the y-intercept of our function is (0,50), and it represents the initial bacteria population in the sample.
b) To find if the function is growing or decaying, we are going to convert its decimal part to a fraction. Then, we will compare the numerator and the denominator of the fraction. If the numerator is grater than the denominator, the function is growing; if the opposite is true, the function is decaying.
Remember that to convert a decimal into a fraction we are going to add the denominator 1 to our decimal and then we'll multiply both of them by a power of ten for each number after the decimal point:
[tex] \frac{1.4}{1} . \frac{10}{10} = \frac{14}{10} = \frac{7}{5} [/tex]
Now we can rewrite our exponential function:
[tex]b(t)=50( \frac{7}{5})^{t} [/tex]
Since the numerator is grater than the denominator, it is growing faster than the denominator; therefore the function is growing.
c) The only thing we need to do here is evaluate the function at t=5:
[tex]b(t)=50(1.4)^{t} [/tex]
[tex]b(5)=50(1.4)^{5} [/tex]
[tex]b(5)=50(5.37824)[/tex]
[tex]b(5)=268.912[/tex]
We can conclude that after 5 hours Dr. Silas began her study will be 268.9 bacteria in the sample.
The function relates to a bacteria count that starts at 50, grows exponentially due to the base of the exponent being greater than 1, and is projected to reach approximately 192 bacteria after 5 hours.
Explanation:a) The y-intercept of the function is the value of the function when t = 0. For the function [tex]b(t)=50(1.4)^t[/tex], if you substitute 0 for t, you get [tex]50(1.4)^0[/tex] which simplifies to 50. Consequently, the y-intercept is 50 which in context, means the study started with 50 bacteria.
b) This function represents exponential growth. We know this because the base of the exponent (1.4) is greater than 1. If the base had been less than 1, it would represent exponential decay.
c) To determine the number of bacteria 5 hours into the study, we need to substitute 5 for t in the formula.
Hence, [tex]b(5)=50(1.4)^5 = approximately 192.2.[/tex] The number of bacteria cannot be in fractions, thus we consider this as approximately 192.
Learn more about Exponential Growth here:https://brainly.com/question/12490064
#SPJ11
0.5cm=1.5m. 36m tall. Find the scale factor.
Answers
Final answer:
To find the model height for an object that is 36 m tall using the given scale of 0.5 cm equals 1.5 m, we establish a proportion, which yields a model height of 12 cm, representing the scale factor as 1 cm : 3 m.
Explanation:
The question asks to find the scale factor given that 0.5 cm on a model equals 1.5 m in real life, and an object's real-life height is 36 meters. First, understand that the scale factor is the ratio of the model's size to the actual size. For this scenario, the given scale is 0.5 cm = 1.5 m. To find the model height for an object that is 36 m tall, we use this scale.
Set up a proportion based on the given scale: 0.5 cm/1.5 m = x cm/36 m. Simplifying the ratio to its smallest form, we get 1 cm = 3 m. Therefore, using cross multiplication, we find the height of the model as x = 0.5 cm * (36 m / 1.5 m).
Calculating gives x = 12 cm. Hence, the scale factor, when considering the model's size to the actual size, is represented as 1 cm : 3 m, and the actual model height is 12 cm for the 36 m tall object.
3 sin2(θ) + 16 sin(θ) − 35 = 0
Answers
now, before continuing on the first root, recall that the sine has a range of -1 ⩽ sin(θ) ⩽1, however 5/3 is greater than 1, and therefore is out of range, meaning, there's no such angle, so we've got zilch there.
now, let's check the second root,
[tex]\bf sin(\theta )+7=0\implies sin(\theta )=-7\implies \measuredangle \theta =sin^{-1}(-7)[/tex]
well, hell -7 is smaller than -1, so is also outside the range for sine, and so, the second root gave also zilch, so, in short, there's no such angle.
A trapezoid has an area of 15 square feet. If the bases are 4 feet and 6 feet , what is the height of the trapezoid? Hurry Big test tomorrow this the last one
Answers
so plug that back into the equation and you get
15=10/2 *h
15=5*h
from here, you know that 15/5 equals 3 and therefore the height of the trapezoid is 3.
Good Luck on ur Big Test!
Final answer:
The height of the trapezoid is 3 feet.
Explanation:
To find the height of a trapezoid with given bases and area, you can use the formula for the area of a trapezoid, which is the average of the two bases multiplied by the height. The formula is as follows:
Area = ½ × (base1 + base2) × height
Given that the area of the trapezoid is 15 square feet and the two bases are 4 feet and 6 feet, the formula becomes:
15 = ½ × (4 + 6) × height
This simplifies to:
15 = ½ × 10 × height
Therefore, we can calculate the height by dividing the area by 5 (which is half of 10):
height = 15 ÷ 5 = 3 feet
So, the height of the trapezoid is 3 feet.
Janice used a 16-inch dowel and a 21-inch dowel to build a kite what is the perimeter of her kite
Answers
21x2=42
32+42=54
the perimeter is 54
Rosalie earns extra money by working as a babysitter over the weekend. She charges $10 to drive to the home and an additional $8 per hour.
Answers
2 hour =26
3 hour =34
4 hour=42
Hope this helps ;)
So by babysitting 48 hours she would earn 394 dollars i guess
The rule of thumb in filmmaking is that you must shoot at least 3 minutes of film for every minute in a movies “final cut”. A 30 minute roll of film cost $250. How much will film cost to make a 90 minute movie?
Please explain how to do this problem! I can’t figure it out!
Answers
However, since you have to shoot three minutes for every one minute in the final cut, you would multiply that by 3. So I think it would be 2,250
What is the value of y?
Answers
Answer:
57
Step-by-step explanation:
Ap3x
Mr. Clark claims that he has a coin that is weighted so that the probability of heads is 40%. To test this, his students flip the coin 200 times and calculate the relative frequency of heads and tails.
Outcome Heads Tails
Relative frequency 0.38 0.62
Select from the drop-down menus to correctly complete each statement.
The relative frequency of heads is
40%.
Mr. Clark's claim about the theoretical probability is likely to be
.
This means that the theoretical probability of tails is most likely
for this coin.
Answers
Since he claims the probability of heads is 40%, that should be what we see in an experiment. 0.38 is very close to 0.40, or 40%, so this is true. Therefore his claim is likely to be true, and the probability of tails should be about 60%.
suppose that a pair of 7 sided dice is tossed. What is the expected value of the sum?
Answers
The expected value of the sum when rolling a pair of 7-sided dice is 8.
Explanation:When rolling a pair of 7-sided dice, each die has numbers 1 through 7 on its faces. To find the expected value of the sum, we need to calculate the average of all possible sums.
The first die can have 7 possible outcomes, and for each outcome, the second die can also have 7 possible outcomes. This gives us a total of 7*7=49 possible outcomes. The sums of these outcomes range from 2 (1+1) to 14 (7+7).
To find the expected value, we multiply each sum by its probability and sum them up. Since each sum has an equal probability of occurring (1/49), we can simplify the calculation:
Expected value = (2*1/49) + (3*1/49) + (4*1/49) + ... + (14*1/49) = 8
Therefore, the expected value of the sum when rolling a pair of 7-sided dice is 8.
You want to apply a fertilizer to your lawn. The directions on the bottle call for mixing 3 ounces of fertilizer with 2 gallons of water. Your sprayer holds 5 gallons. To completely fill the sprayer with a proper mixture, how many ounces of fertilizer must you use?
A. 61⁄5
B. 52⁄3
C. 71⁄2
D. 31⁄3
Answers
Answer: 5 2/3
Step-by-step explanation:
In the number 35.3816, the underlined three is __________ the other three.
Answers
The three in the tens place is 100 times bigger than the other three.
.3*100= 30
I hope this helps!
~kaikers
if the parent function is 3 square root x, describe the translation of the function y=3 square root x-4 +3
Answers
Note [tex]f(x)=3\sqrt{x}[/tex] so [tex]f(x-4)=3 \sqrt{x-4} [/tex] so [tex]f(x-4)+3= \sqrt{x-4}+3 [/tex].
We just analyse the function to see the translations. f(x-4) corresponds to a horizontal translation 4 units in the positive x direction. f(x)+3 corresponds to a vertical translation 3 units in the positive y direction.
So overall, the parent function moves 4 units right and 3 units up. This is a translation by the vector [tex] \left[\begin{array}{r}4&3\end{array}\right] [/tex].
Answer:
Step-by-step explanation:
Four units to the rights and three units up from ^3 square x.
61/100in word form,decimal
Answers
A box of 20 Crunchy Munchy cookies costs $2.50 and a box of 40 Crunchy Munchy cookies costs $4.00. One quart of milk costs $1.50. Which of the following is a better bargain?
Answers
40 crunchy munchy=4.00 4/40=0.100 cents per candy - this is cheaper than previous one
1 quart of milk =1.50 dollars
you cant actuality compare candy to milk
Dominic picks oranges from 18 trees. He picks 11.4 pounds of oranges from each tree. How many total pounds does Dominic pick?
Answers
11.4 * 18 is 205.2
He picked a total of 205.2 pounds of oranges from the 18 trees.
Hope this helps
Write the equation of the line passing through (−1, 0) and (0, −3).
Answers
The equation of the line passing through (-1, 0) and (0, -3) is y = -3x - 3, where -3 is the slope, and -3 is also the y-intercept.
The equation of a line can be written in slope-intercept form as y = mx + b, where m is the slope of the line, and b is the y-intercept. To find the slope m, we can use the two points given; the slope is the change in y over the change in x, which is (-3 - 0)/(0 - (-1)) = -3/1 = -3. With the slope found, and knowing that the line passes through the point (0, -3), we can say the y-intercept b is -3. The equation of the line through the points (-1, 0) and (0, -3) is y = -3x - 3.
What is the simplified form of the expression? x8 2y10 5x5
Answers
x8* 2y10 * 5x5
product of two powers that have the same base is equal to a power of said base that has as exponent the sum of the exponents
x8* 2y10 * 5x5----------> (1)*(2)*(5)*[x^(8+5)]*y^10=10*[x^13]*y^10
the answer is 10*[x^13]*y^10
how many books can you get in a storage bin that is 4 feet high and 9 feet long and 11 feet wide
Answers
V=bh or l x w x h
So, 9 times 11 is 99.
99 times 4 is 396, which is the volume.
You did not specify the size of the books, so all we can say is that the volume of the bin is 396 cubic feet.
Julia is an intern at an architecture firm. She is given an assignment to create a bell-shaped structure that is symmetrical. She writes the function f(x)=3 squareroot -|x-2|+6 to model the structure. Find the piecewise function that matches this absolute value function. Then, graph the function using a graphing calculator and describe what you see.
Answers
Answer:
The given function is
f(x)= 3 [tex]\sqrt\left- |x \right-2 |+6[/tex] ⇒[Absolute value function]
F(x)= 1. 3[tex]\sqrt {-(x-2)+6}[/tex] =[tex]3\sqrt {-x+2+6}=3\sqrt{-x+8}[/tex] when (x-2≥0→x≥2) ⇒[ Piecewise function]
2. [tex]3\sqrt{-[-(x-2)]+6}=3\sqrt{x-2+6}=3\sqrt{x+4}[/tex] when [ x-2<0→x<2]⇒[ Piecewise function]
We see there is a shape which is is in the form of dome,point of intersection of two curves being (2,7.348), symmetrical on both side of line x=2.
Four consecutive even integers add to obtain 324
Answers
Your integers are 78, 80, 82, 84
help!!!
All rectangles can also be classified as which of the following? Select all that apply. r
rhombus
square
parallelogram
trapezoid
quadrilateral
Answers
rhombus
parallelogram
quadrilateral
hope it helps
Answer:
All rectangles can also be classified as which of the following? Select all that apply. r
rhombus
square
parallelogram
trapezoid
quadrilateral
Step-by-step explanation:
In plane geometry, a rectangle is a parallelogram.
Parallelogram: its opposite sides are parallel, it can also be a square, or a rhombus.
In Euclidean geometry, a quadrilateral is a polygon that has four sides and four vertices.
The answer is: Rhombus, square, parallelogram, and quadrilateral.
The function f is such that f(x)=4x-1 find f^-1(x)
Answers
The inverse is basically expressing x in terms of y.
y=4x-1 =>
y+1=4x
x=(y+1)/4
Since the inverse is still a function of x, we only have to interchange x and y
inverse of f(x) = f^-1(x) = (x+1)/4
Jerome went on a hike. He climbed three-fourths of a mile in two-thirds of an hour. What was his hiking speed in miles per hour?
Answers
d = 3/4 mile
t = 2/3 hour
r = ????
r = 3/4 // 2/3 Invert and multiply the denominator
r = 3/4 * 3/2 = 9/8 = 1 1/8
If your calculator handles fractions, you can use it to do this. If not you can change this to a decimal.
d = 3/4 = 0.75 miles
t = 2/3 hour = 0.666666666 hours.
r = ???
d = r*t
r = d/t
r = 0.75 / 0.66666667
r = 1.125 miles / hour
which gives you exactly the same answer 1.125 = 1 1/8
Final answer:
Jerome's hiking speed was calculated by dividing the distance he hiked, three-fourths of a mile, by the time it took him, two-thirds of an hour. This yielded a hiking speed of 1.125 miles per hour.
Explanation:
To calculate Jerome's hiking speed in miles per hour, we need to divide the distance he hiked by the time it took him. Jerome hiked three-fourths of a mile in two-thirds of an hour. To find the speed, we use the formula:
Speed = Distance ÷ Time
Speed = ¾ mile ÷ ⅓ hour
To divide fractions, we multiply by the reciprocal of the denominator:
Speed = ¾ × ⅔ = 3/4 × 3/2 = 9/8
This fraction simplifies to 1⅛ (1.125) miles per hour. So, Jerome's hiking speed was 1.125 miles per hour.
It is important to remember that when we talk about speed, we are referring to the distance traveled over a certain period of time regardless of the direction of travel.
if h(x)=(f o g) (x) and h(x)=√x+5, find g(x) if f(x)=√x+2
Answers
[tex]\sqrt{x}+5=\sqrt{g(x)}+2[/tex]
[tex]\sqrt{g(x)}=\sqrt{x}+5-2[/tex]
[tex]\sqrt{g(x)}=\sqrt{x}+3[/tex]
[tex]g(x)=(\sqrt{x}+3)^2[/tex]
[tex]=(x+6\sqrt{x}+9)^2[/tex]
we are given
[tex]h(x)=(fog)(x)[/tex]
we can write it as
[tex]h(x)=f(g(x))[/tex]
[tex]f(x)=\sqrt{x+2}[/tex]
now, we can replace x as g(x)
[tex]f(g(x))=\sqrt{g(x)+2}[/tex]
[tex]h(x)=\sqrt{g(x)+2}[/tex]
[tex]h(x)=\sqrt{x+5}[/tex]
now, we can equate them
[tex]\sqrt{x+5}=\sqrt{g(x)+2}[/tex]
now, we can solve for g(x)
Take square both sides
[tex](\sqrt{x+5})^2=(\sqrt{g(x)+2})^2[/tex]
[tex]x+5=g(x)+2[/tex]
now, we can solve for g(x)
Subtract both sides by 2
[tex]x+5-2=g(x)+2-2[/tex]
[tex]x+3=g(x)[/tex]
[tex]g(x)=x+3[/tex].............Answer