Answer:
D is the best one to buy
Step-by-step explanation:
A: 1.25/10=0.125
B: 1.47/12=0.1225
C: 1.68/14=0.12
D:1.84/16=0.115
Using proportions, it is found that the better buy is given by:
d. Brand D
What is a proportion?A proportion is a fraction of a total amount.
In this problem, the better buy will be given by the lowest ratio of price to ounces.
Hence:
1.25/10 = 0.125
1.47/12 = 0.1225
1.68/14 = 0.12
1.84/16 = 0.115
Hence brand D is the better buy.
More can be learned about proportions at https://brainly.com/question/24372153
The lifetime (in miles) of bicycle tires produced by a manufacturer is a normally distributed random variable with a mean of 3000 miles and a standard deviation of 150 miles. Marketing research by the manufacturer has indicated that if a tire lasts 3270 or more miles, the customer will definitely purchase another of these tires. What percentage of all tires produced by this company will have a lifetime of 3270 or more miles?
Answer:
3.59% of all tires produced by this company will have a lifetime of 3270 or more miles
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Normally distributed random variable with a mean of 3000 miles and a standard deviation of 150 miles.
This means that [tex]\mu = 3000, \sigma = 150[/tex]
What percentage of all tires produced by this company will have a lifetime of 3270 or more miles?
The proportion is 1 subtracted by the pvalue of Z when X = 3270. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{3270 - 3000}{150}[/tex]
[tex]Z = 1.8[/tex]
[tex]Z = 1.8[/tex] has a pvalue of 0.9641
1 - 0.9641 = 0.0359
0.0359*100% = 3.59%
3.59% of all tires produced by this company will have a lifetime of 3270 or more miles
A basketball player made 16 shots for a total of 38 points during a game. Some points were worth 2 points and some were worth 3 points. Write a system of equations that models this. How many 2 and 3 point shots did he make? Write your answer as a coordinate.
Answer:
4- 3s and 2- 2s
Step-by-step explanation:
3+3+2+2+3+3
In AUVW, the measure of ZW=90°, UV = 96 feet, and VW = 58 feet. Find the measure of V to the nearest degree.
Answer:53
Step-by-step explanation:
Answer:
Step-by-step explanation:
Is this statement True. A system of independent equations has infinite solutions
Answer:
It's true.
Step-by-step explanation:
CAMO is a rectangle with diagonals intersecting at W. WA = 4x - 3 , CW = x + 6 , and AO = 22 Find x.
Answer:
x = 3.5
Step-by-step explanation:
diagonals bisect each other so AW = OW
since AO = 22 then AW = 11
11 = 4x - 3
14 = 4x
x = 7/2 or 3 1/2
15x^2+5x GCF help. out please
Answer:
5x is the GCF
Step-by-step explanation:
7)
Which could be solved for x?
-0)
A)
2x+2
B)
3(x+ 2)
)
D)
1 / 8x = 12
Which of these expressions or phrases can be used to represent model choose all the correct answers
Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
tinyurl.com/wtjfavyw
Which number is prime 9,10,11,12
Answer:
11
Step-by-step explanation:
A prime number is a number that cannot be factored other than 1 and that number is self thus, 11 will be the prime number.
What is a number system?The number system is a way to represent or express numbers.
A decimal number is a very common number that we use frequently.
Since the decimal number system employs ten digits from 0 to 9, it has a base of 10.
A prime number is a number that cannot be factored other than 1 and that number is self.
For example, 9 can be written as 3 x 3 thus it will not prime number and 11 cannot be written as two products other than 1 x 11 thus it will be a prime number.
Hence "A prime number is a number that cannot be factored other than 1 and that number is self thus, 11 will be the prime number".
For more about the number system,
https://brainly.com/question/22046046
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look at the picture I attached
Answer:
6
im not really sure how to explain this, using the number line go from -2 to 4, getting you to 6 spaces
Select the correct answer.
A researcher for a travel company is looking into the prices people are willing to pay for airplane tickets. The company has communicated that the overall population mean is $265 with a standard deviation of $40.93. The researcher has a sample of 130 ticket purchases from one location.
By the central limit theorem, which interval can the researcher be 95% certain that the sample mean will fall within?
From the central limit theorem, the interval can the researcher be 95% certain that the sample mean will fall within A. $257.82 and $272.18.
How to use the Central limit theorem?
We are given;
Population Mean; μ = $265
Population standard deviation; σ = $40.93
Sample size; n = 130
The central limit theorem (CLT) postulates that the distribution of sample mean approximates a normal distribution with larger sample sizes, disregarding the population's distribution.
This implies that sample sizes equal to or greater than 30 are often considered sufficient for the Central limit theorem to hold.
Thus, by the central limit theorem, the interval can the researcher be 95% certain that the sample mean will fall within A. $257.82 and $272.18.
Read more about Central limit theorem at; https://brainly.com/question/17097944
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Answer:
See image below
Step-by-step explanation:
What is the value of 4 + 5x when x = 3? (3 points) a 11 b 12 c 17 d 19
Answer:
D) 19
Step-by-step explanation:
4 + 5x
4 + 5(3)
4 + 15
19
Answer:
D. 19Step-by-step explanation:
Since x = 3, replace any x in the equation with 3.
4 + 5 (3) =
multiply 5 • 3
4 + 15 = 19
Explain how the function y=-1/3|x+2|+5 compares to the function y=|x|
Answer:
y=-1/3|x+2|+5 is upside down compared to y=|x|, and the slope 1/3 that of y=|x|, the vertex is also shifted left by two units and up by 5.
Step-by-step explanation:
What are the x 2x + 4 = x + 18
Step-by-step explanation:
2x+4=x+18
2x-x=18-4( Addition on the Right hand side changes to subtraction on the left hand side and wise-versa.)
1x=14
1x(1*x so X itself)
X=14
Answer:
x+2x+4_x_18=0
2x_14=0
x=14÷2
x=7
pls help me...........
Answer:
19
Step-by-step explanation:
CAN SOMEONE PLEASE HELP ME WITH MY HOMEWORK ILL DO ANYTHING FOR HELP JUST PLEASE HELP ME WITH MY HOMEWORK AND PLEASE EXPLAIN HOW YOU GET YOUR ANSWER I WILL GIVE YOU BRAINLIST
Answer:
the simplest way to finish your hw is to ask the Q of your hw here instead of asking us to help with your hw
what are the factors to a2+11a+30
Step-by-step explanation:
hope this is helpful to you
At the store, you see oranges on sale at 1 pound for 3 dollars. At a different store, your brother sees oranges on sale at 3 pounds for 8 dollars.
Do the oranges cost the same at both stores?
Which store offers a better deal?
The energy magnitude M of an earthquake can be modeled by the equation
M=(2/3)log E - 9.9, where E is the amount of energy released. What is the magnitude of an earthquake with an energy release of 7.079 X 10^26? Round your answer to the nearest whole number.
Answer: magnitude of an earthquake with an energy release of 7.079 X 10^26 =8
Step-by-step explanation:
Given that the magnitude M of an earthquake can be expressed by the equation
M=(2/3)log E - 9.9
Given that Energy release , E=7.079 X 10^26
Magnotude , M=(2/3)log E - 9.9
=2/3 log7.079 X 10^26 -9.9
2/3 x 2.8499719 -9.9
17.8999813 -9.9
=7.9999
rounded to 8 magnitude
PLS HELP WILL MARK BRAINLIEST
Answer:
Complementary Angles
Step-by-step explanation:
When all angles are added together they have a sum of 90°. Two angles that have a sum of 90° are complementary angles.
I know this is 90° because it is a right angle.
Jalaysha is three years less than twice as old as Ben, and Maureen is two years older than Ben. Write an expression for Jalaysa and Maureen's ages in terms of Ben'sunknown age, b.
Write in simplest Standard Form
jalaysha age:
Maureen's age:
Answer:
3 - 2 x b
For jalaysha's age.
b + 2
Is maureen's age
Answer:
3-2*b=j
2+b=m
Step-by-step explanation:
The area is about? Sorry I’m asking this but I just can’t figure it out I need the step PLEASE HELP im not good at this!!
Answer:
area = 113.04 ft²
Step-by-step explanation:
area = πr²
r = 1/2diameter so:
r = 6 ft
π = 3.14
area = (3.14)(6²) = (3.14)(36) = 113.04 ft²
Answer:
The area is about 113.04 ft² square feet
Step-by-step explanation:
Hope this helps
Finding angle measures between intersecting lines. Note: Angles necessarily drawn to scale. x=__
Answer:
x=25+30=55 since the vertically opposite angle are equal.sorry the no is not clear in question
Answer:
[tex]\boxed{\tt x= 45^{\circ}}[/tex]
Step-by-step explanation:
∠BEG and ∠DEB combine to form ⇒ ∠DEG, which is a vertical angle with ∠x because it's the opposite from ∠x.
(Vertical angles are always congruent, or of equal measure)
So, [tex]\tt \angle BEG +\angle DEB=\angle x[/tex]
[tex]\tt \angle BEG +\angle DEB=\angle x[/tex]
[tex]\tt 25^{\circ}+20=x[/tex]
[tex]\tt 45^{\circ}=x[/tex]
[tex]\tt x= 45^{\circ}[/tex]
_____________________________
Use the two-way table below to create a relative frequency table. Remember to round to the nearest percent.
A=
B=
C=
D=
E=
F=
G=
H=
I=
Plsssss helpppppp
solve the rational equation: 1/x-1 - 1/x+2 = 1/4
9514 1404 393
Answer:
x = -0.5 ±√14.25
Step-by-step explanation:
Subtract 1/4 and combine terms.
[tex]\dfrac{1}{x-1}-\dfrac{1}{x+2}-\dfrac{1}{4}=0\\\\\dfrac{4(x+2)-4(x-1)-(x-1)(x+2)}{4(x-1)(x+2)}=0\\\\\dfrac{-x^2-x+14}{4(x-1)(x+2)}=0\\\\x^2 +x -14=0\qquad\text{no factors cancel, numerator must be zero}\\\\(x+0.5)^2-14.25=0\qquad\text{complete the square}\\\\x=-0.5\pm\sqrt{14.25}\qquad\text{add 14.25, square root, subtract 0.5}\\\\x\approx\{-4.2749, 3.2749\}[/tex]
Adding & Evaluate 6 + 2 - (-1) + (-8).
Answer:
0.66071428571429
Step-by-step explanation:
Answer:
the answer should be 1
Step-by-step explanation:
Remove parentheses.
6+2−(−1)−8
Multiply −1 by −1.
6+2+1−8
Add 6 and 2.
8+1−8
Add 8 and 1.
9−8
Subtract 8 from 9.
1
Help plz tyyy.... hurry!
Answer:
0%
Step-by-step explanation:
im not sure but i got the answer because the square was not have any color
The answer I’m lost
Answer:
area = length × breadth
6×7 = 42 feet ²
Find the common difference of the arithmetic sequence − 16 , − 19 , − 22
Answer:
3
Step-by-step explanation:
Which of the following is equivalent to the expression below?
4x + 3(2x - 1) - 4x