Answer:
B. 4 : 0
Step-by-step explanation:
4 ÷ 0 = undefined.
Anything divided by zero will always be undefined because 0 has no value and nothing times it will get anything more than 0.
Ex...
0 x 1 = 0
0 x 2 = 0
And so on..
If a random sample of 47 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by more than 0.2 millimeters?
Complete Question
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 143 millimetres, and a standard deviation of 5. If a random sample of 47 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by more than 0.2 millimetres? Round your answer to four decimal places.
Answer:
The probability is [tex]P(|\= x - \mu | \ge 0.2 ) = 0.78394[/tex]
Step-by-step explanation:
From the question we are told that
The sample size is n = 47
The mean diameter is [tex]\mu = 143[/tex]
The standard deviation is [tex]\sigma = 5[/tex]
Generally the standard error of the mean is mathematically represented as
[tex]\sigma_{x} = \frac{\sigma }{\sqrt{n} }[/tex]
=> [tex]\sigma_{x} = \frac{5 }{\sqrt{47} }[/tex]
=> [tex]\sigma_{x} = 0.7293[/tex]
Generally the probability that the sample mean will differ from the population mean by more than 0.2 milli meters is mathematically represented as
[tex]P(|\= x - \mu | \ge 0.2 ) = P(\frac{|\= x - \mu|}{\sigma_{x}} \ge \frac{0.2}{0.7293} )[/tex]
[tex]\frac{|\= x - \mu | -\mu}{\sigma } = |Z| (The \ standardized \ value\ of \ {|\= x - \mu | )[/tex]
=> [tex]P(|\= x - \mu | \ge 0.2 ) = P(|Z| \ge 0.2742 )[/tex]
=> [tex]P(|\= x - \mu | \ge 0.2 ) = P(Z < - 2742) + P(Z > 0.2742)[/tex]
From the z table the area under the normal curve to the left corresponding to -2.742 is
[tex]P(Z < -0.2742) =0.39197[/tex]
From the z table the area under the normal curve to the right corresponding to 2.742 is
P(Z > 0.2742) = 0.39197
So
[tex]P(|\= x - \mu | \ge 0.2 ) = 0.39197 + 0.39197[/tex]
[tex]P(|\= x - \mu | \ge 0.2 ) = 0.78394[/tex]
help please !!!! algebra question !!!
Answer:
it depends on the value of x
Step-by-step explanation:
Eg. if x = 1
then, 3(1) < 4
and if, x = 2
then, 3(2) > 4
hope this helps
What is the answer please :)
Answer:
your answer should be B
Step-by-step explanation:
hope you have a great day sir/ma'am
If the radius of a circle is 19 what’s the circles diameter
Answer:
38
Step-by-step explanation:
R × 2 = D19 × 2 = D19 × 2 = 38I hope this helps!
Answer:
d = 38
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASGeometry
Diameter: d = 2rStep-by-step explanation:
Step 1: Define
Radius r = 19
Step 2: Find diameter
Substitute: d = 2(19)Multiply: d = 38And we have our final answer!
A sweater is on sale for 22.50 if the price represents a 45% what is the selling price
answer please math 1234556778898999000
Answer:
[tex]\sqrt{6}[/tex]
Step-by-step explanation:
The elevation of a mountain is 27,370 feet. Due to erosion, this mountain is reduced by 0.2% each year. In how many years will the elevation be 26,986.82 feet?
Answer:
7 years
Step-by-step explanation:
27370 - 26986.82 = 383.18ft
0.2% = 0.2/100 = 0.002
27370*0.002 = 54.74
each year the montain reduce your elevation
54.74ft
then:
383.18/54.74 = 7
Answer:
7 years
casey wants to buy a gym memebership. One gym has a $80 joining fee and cost $35 per month. Another gym has no joining fee and costs 75$ per month. When would casey pay the same amount to be a member of either gym? how much would she pay?
Answer:
they cost the same after 2 months
Step-by-step explanation:
Since we're looking for these two gyms cost the same, we need to make the equation compare the two together:
35x + 80 = 75x (the 1st gym with a joining fee $80 and 35 monthly equals $75 monthly)
Subtract 35x from both sides:
35x - 35x + 80 = 75x - 35x
80 = 40x
Divide by 40:
80 / 40 = 40x / 40
2 = x
So they cost the same after 2 months
35 * 2 + 80 = 75 * 2
150 = 150
And you'll be spending $150 in total.
someone help me on 1 pls
Answer:
The answer is 140
Step-by-step explanation:
E Gabby had dinner at her favorite restaurant and the cost of her meal is $45.00. She wants to leave a 20% percent tip. What is her total bill including tip? A 90 % B 85 %
Answer: $54.00
Step-by-step explanation:
$45.00 x .20 = $9.00
$45.00 + $9.00 = $54.00
plz HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
36 ÷ a
55 - b
18 + c
49 x d
e ÷ 62
Step-by-step explanation:
what is 15 / 3/4 10 POINT IF ITS RIGHT
Answer:
20
Step-by-step explanation:
A boy wants to jump onto a carousel that is spinning at a rate of 14 revolutions per minute. If the carousel is 23 feet in diamter, how fast must the boy run to match the speed of the carousel and jump on?A) 2.68 feet per second.B) 1,011.59 feet per second.C) 33.72 feet per second.D) 16.86 feet per second.
Answer:
16.86 ft/s
Step-by-step explanation:
Given that
Speed of the carousel, s = 14 rpm
Distance from the carousel, d = 23 ft
To start with, we convert the given speed to revolution per second, so that
s = 14/60 rev/sec
To find the needed speed, we use the formula
v =2πnR, remember that Diameter = 2R, so we substitute D for 2R and get πnD
v = πnD, and we use this to find our needed velocity
v = 3.142 * 14/60 * 23
v = 72.266 * 14/60
v = 16.86 ft/s
Therefore the boy must run at a speed of 16.86 ft/s in order to be able to match the carousel and jump on it
Please help ASAP!!!!!!
Answer:
2
Step-by-step explanation:
Please help it’s due
Answer:
c, d, e,
Step-by-step explanation:
supplementary means 180 degrees or straight line
how many (5/16)s are in 1 7/8
Answer:
6
Step-by-step explanation:
Answer:
6.
Step-by-step explanation:
1 7/8 / 5/16
= 15/8 / 5/16
= 15/8 * 16/5
= 15*16
------
8 * 5
= 3 * 2 / 1* 1
= 6.
Working alone, Jamie can mow her lawn in 75 minutes. If Bob helps her, then the two can mow the lawn in 30 minutes. How long does it take Bob to mow the lawn alone?
20 POINTS!!
Answer:
60 mins
Step-by-step explanation:
Ganesh is making a scale model of the Space Needle in Seattle, Washington. The space needle is 605 feet tall. If the model is 1/100 the actual size of the Space Needle, how tall is the model? _____ feet
Answer:
[tex]Model = 6.05ft[/tex]
Step-by-step explanation:
Given
[tex]Space\ Needle = 605ft[/tex]
[tex]Scale\ Model = \frac{1}{100}[/tex]
Required
Determine the height of the model.
To do this, we simply multiply the scale model by the height of the space needle.
[tex]Model = Scale\ Model * Space\ Needle[/tex]
[tex]Model = \frac{1}{100} * 605ft[/tex]
[tex]Model = \frac{605ft}{100}[/tex]
[tex]Model = 6.05ft[/tex]
Hence, the height of the model is 6.05ft
3. A road sign that is 12 feet high casts a shadow that is 15 feet long.
A second, taller road sign casts a shadow that is 25 feet long. What is
the height of the taller road sign?
Answer:
I think its 22 but I'm not sure
Which rational number equals 0 point 6 with bar over 6? (5 points)
A. 2 over 3
B. 6 over 10
C. 4 over 5
D. 6 over 5
A BMW I-8 has N advertised rate of acceleration of 6.39 m/s to the second power. Based in the advertised date of acceleration, what would the velocity of a bmw I-8, starting from rest, in 4.20 seconds
Answer:
3.43
Step-by-step explanation:
On a spelling quiz, Lily got 16 out of 20 questions correct. Select all the expressions that show the ratio of Lily’s correct answers to incorrect answers.
A. 45
B. 164
C. 4:1
D. 5:4
E. 16:20
Answer:
E.
Step-by-step explanation: Unless you accidentally swapped the 5 and 4 around for D, then the answer is just E.
Janna is measuring the dimensions of her bedroom to determine how much paint she should buy for the walls. If her measuring tape has increments of 0.01 meter, which of the following could be the length of one wall with the correct number of significant digits?
3.6
3.60
4
3.604
3.8907. y0.01 length wanna
a) Write 2350 million in standard form.
b) Write 25 * 10^6 in standard form.
a) We can write 23,50,000,000 as 2350 million in standard form.
b) 25,000,000. c) The number 9 × 10⁴ is a square number.
What is the number system?A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9.
a) We have to write 2350 million in standard form.
⇒ 23,50,000,000
b) We have to write 25 × 10⁶ in standard form.
⇒ 25,000,000
c)
A. 4 × 10⁵ = 4,00,000
B. 9 × 10⁴ = 90,000 = 3² × (10²)²
This number is a square number.
C. 4 × 10³ = 4,000
D. 9 × 10³ = 9,000
Learn more about the number system here:
https://brainly.com/question/21751836
#SPJ2
Lauren paid $16.74 for sliced turkey at the deli counter. The turkey cost $6.20 per pound. How much turkey did Lauren buy? Round to the nearest tenth if necessary
Answer:
2.7 pounds
Step-by-step explanation:
16.74/ 6.20= 2.7
Kristy asks Lonnie to think of a number add it with 3 to it multiply the sum by 2 and the subtract 6. let (n) stand for Lonnies starting number. which expression represents Lonnies final number
Answer:
2(n + 3) - 6 is the expression that represents the final number.
Step-by-step explanation:
Answer: the expression becomes 2(x +3) - 6.
Let the number be x. Then according to the question,
Step 1 :- Adding 3
=> x + 3
Step 2 :- Multiply the sum by 2
=> 2×(x + 3)
Step 3 :- Subtract 6
=> 2(x +3) - 6
Thus the expression becomes 2(x +3) - 6.
Estimate the perimeter and the area of the shaded figure to the nearest tenth.
Answer:
Here is ur answer.
Step-by-step explanation:
Solve: | −2n | + 10 = −50
(Find Solution)
Answer:
No Solution
Step-by-step explanation
| −2n | + 10 = −50
Subtract 10 on both sides
|-2n|+10-10=-50-10
Simplify
|-2n=|=-60
No Solution
What is the relationship between n and the number of petals shown in the sine rose curve?
n petals when n is even and odd
2n petals when n is even and odd
2n petals when n is even and n when n is odd
n petals when n is even and 2n when n is odd
Answer is C
Answer:
2n petals when n is even and n when n is odd
Step-by-step explanation:
edge 2020
Answer:
2n petals when n is even and n when n is odd
Step-by-step explanation:
edge
b) The perimeter of the rectangle below is 42cm. Calculate the
lengths of the sides by forming an equation and solving it.
x-2
x + 5
Answer:
L = 14 W = 7
Step-by-step explanation:
2L + 2W = P
2 (x - 2) + 2(x + 5) = 42
2x - 4 + 2x + 10 = 42
4x + 6 = 42
-6. -6
4x = 36
x = 9
9 - 2 = 7
9 + 5 = 14
