A) The outdoor temperature is greater than 75 degrees. represents the inequality > 75.
What is inequality ?
Inequality is a mathematical concept that represents a comparison between two values or expressions that are not equal. An inequality is a statement that one value or expression is greater than, less than, greater than or equal to, less than or equal to, or not equal to another value or expression.
The symbols used in inequalities are:
">" means "greater than""<" means "less than"">=" means "greater than or equal to""<=" means "less than or equal to""≠" means "not equal to"According to the question:
The inequality > 75 means that the temperature is greater than 75 degrees Fahrenheit. The symbol ">" is used to represent "greater than".
Option A, "The outdoor temperature is greater than 75 degrees", represents this inequality because it uses the phrase "greater than" to describe the temperature, which is the same as the ">" symbol used in the inequality.
Option B, "The outdoor temperature is 75 degrees or cooler", does not represent the inequality > 75 because it includes temperatures that are not greater than 75 degrees.
Option C, "The outdoor temperature is warmer than 75 degrees", is similar to option A, but it uses the phrase "warmer than" instead of "greater than". While these phrases are often used interchangeably in casual conversation, in mathematical language "greater than" is more precise and is the term used in the inequality.
Option D, "The outdoor temperature is 75 degrees or warmer", represents the opposite inequality, < 75, because it includes temperatures that are equal to or greater than 75 degrees, while the original inequality > 75 excludes temperatures that are exactly 75 degrees.
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solve by factoring 2x^2 + 10x - 28 = 0
Answer:
x = 2, x = -7
Step-by-step explanation:
Hello!
First, let's factor the equation by grouping.
Factor2x² + 10x - 28 = 02(x² + 5x - 14) = 02(x² + 7x - 2x - 14) = 02(x(x + 7) - 2(x + 7)) = 02(x - 2)(x + 7) = 0Set each factor with x equal to 0, and solve for x.
(x - 2) = 0The solutions for x are 2 and -7.
Which Equation best matches the graph shown below?
Answer:
.2(x+1)(x+5)
Step-by-step explanation:
Well first lets start with the x intercepts which are -1 and negative 5 so the equation must be either -0.2(x+1)(x+5) or .2(x+1)(x+5)
Notice how the graph is going upwards this means the number in front of the equation -.2 or .2 must be positive making .2(x+1)(x+5) this is because if .2 was negative the graph would be going downwards
at the local college, a study found that students used an average of 5.2 school books per semester. a sample of 39 students was taken. what is the best point estimate for the average number of school books per semester for all students at the local college?
The best point estimate for the average number of school books per semester for all students at the local college is 5.2.
The average number of school books per semester for all students at the local college is 5.2. A sample of 39 students was taken, i.e., n = 39. To find, The best point estimate for the average number of school books per semester for all students at the local college.
The best point estimate for the average number of school books per semester for all students at the local college is the sample mean which can be calculated.
Therefore, the best point estimate for the average number of school books per semester for all students at the local college is 5.2.
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How does the standard deviation of the population affect the width of the confidence interval for the population mean
The standard deviation of the population affects the width of the confidence interval for the population mean. A larger standard deviation results in a wider confidence interval, while a smaller standard deviation results in a narrower confidence interval.
The standard deviation of the population plays a crucial role in determining the width of the confidence interval for the population mean. The formula for the confidence interval for the population mean is:
CI = X ± Z × (σ / sqrt(n))
where:
CI is the confidence interval
X is the sample mean
Z is the Z-score corresponding to the desired level of confidence
σ is the standard deviation of the population
n is the sample size
As you can see from the formula, the width of the confidence interval is directly proportional to the standard deviation of the population. The larger the standard deviation, the wider the confidence interval. This means that if the standard deviation of the population is large, then we need a larger sample size or a lower confidence level to obtain a narrower confidence interval. On the other hand, if the standard deviation of the population is small, we can obtain a narrower confidence interval with a smaller sample size or a higher confidence level.
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"I have a 35% off coupon that I would like to apply to my purchase today. How much will the coupon save me?" Employee: "It looks like the price of the item you want to purchase is $125.00, so the coupon will save you _______."
Answer:
$43.75
Step-by-step explanation:
So you have: 35% discount
Total without discount: $125.00
Amount discounted: ?
So you have to make 35% into a number that you can multiply with $125. When you have a percentage you move the decimal two times to the front so you have 0.35 then you multiply;
125 x 0.35 = 43.75.
43.75 is the amount discounted, so you only have to pay 81.25. The equation for that would look like;
125 - 43.75 = 81.25
Hope that made sense!
It looks like the price of the item you want to purchase is $125.00, so the coupon will save you $ 43.75
Given data ,
To calculate how much the coupon will save you, you can multiply the price of the item by the percentage discount.
The price of the item is $125.00 and the coupon offers a 35% discount
The percentage of discount is given as = 35 %
35% of $125.00 can be calculated as:
On simplifying the equation , we get
(35/100) x $125.00 = $ 43.75
A = $ 43.75
Therefore, the coupon will save you $ 43.75 on your purchase
Hence , the coupon will save $ 43.75
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Solve the following systems of equations using Gaussian Elimination. 2x + 3y + z = 2 y + 5z = 20 -x+2y+3z = 13
Find the inner product of two vectors A = (2, -3,0) and B = = (-1,0,5)
The inner product of two vectors A = (2, -3,0) and B = (-1,0,5) is -2 / √(13×26).
Solving the given system of equations using Gaussian elimination:
2x + 3y + z = 2 y + 5z = 20 -x+2y+3z = 13
Matrix form of the system is
[A] = [B] 2 3 1 | 2 0 5 | 20 -1 2 3 | 13
Divide row 1 by 2 and replace row 1 by the new row 1: 1 3/2 1/2 | 1
Divide row 2 by 5 and replace row 2 by the new row 2: 0 1 1 | 4
Divide row 3 by -1 and replace row 3 by the new row 3: 0 0 1 | 5
Back substitution, replace z = 5 into second equation to solve for y, y + 5(5) = 20 y = -5
Back substitution, replace z = 5 and y = -5 into the first equation to solve for x, 2x + 3(-5) + 5 = 2 2x - 15 + 5 = 2 2x = 12 x = 6
The solution is (x,y,z) = (6,-5,5)
Therefore, the solution to the given system of equations using Gaussian elimination is (x,y,z) = (6,-5,5).
The given two vectors are A = (2, -3,0) and B = = (-1,0,5). The inner product of two vectors A and B is given by
A·B = |A||B|cosθ
Given,A = (2, -3,0) and B = (-1,0,5)
Magnitude of A is |A| = √(2²+(-3)²+0²) = √13
Magnitude of B is |B| = √((-1)²+0²+5²) = √26
Dot product of A and B is A·B = 2(-1) + (-3)(0) + 0(5) = -2
Cosine of the angle between A and B is
cosθ = A·B / (|A||B|)
cosθ = -2 / (√13×√26)
cosθ = -2 / √(13×26)
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The exterior of a fridge is shaped like a rectangular prism, and measures 2 2/3 feet wide by 5 1/2 feet high by 2 1/2 deep. What amount of space does the fridge take up?
Answer:
The fridge takes up 36 2/3 cubic feet of space.
Step-by-step explanation:
To calculate the volume of the fridge, you need to multiply the width, height, and depth.
Width = 2 2/3 feet = (2*3 + 2) / 3 = 8/3 feet
Height = 5 1/2 feet = (5*2 + 1) / 2 = 11/2 feet
Depth = 2 1/2 feet = (2*2 + 1) / 2 = 5/2 feet
Volume = (Width) * (Height) * (Depth)
Volume = (8/3 feet) * (11/2 feet) * (5/2 feet)
Calculating the volume:
Volume = 8 * 11 * 5 / (3 * 2 * 2) cubic feet
Volume = 440 / 12 cubic feet
Volume = 36 2/3 cubic feet
From a circular sheet of a radius 5 cm, a circle of radius 3 cm is removed. Find the area of the remaining sheet.
Answer:
2 cm
Step-by-step explanation:
we find t=2.73 with 5 degrees of freedom. what is the appropriate p-value.
The appropriate p-value for a t-value of 2.73 with 5 degrees of freedom is approximately 0.05. This indicates that there is a 5% chance of observing a t-value as extreme as 2.73 or more extreme, assuming the null hypothesis is true.
In statistics, the p-value measures the strength of evidence against the null hypothesis. The null hypothesis states that there is no significant difference or effect in the population being studied. The p-value is calculated by determining the probability of obtaining a test statistic (in this case, the t-value) as extreme as or more extreme than the observed value, assuming the null hypothesis is true.
To determine the appropriate p-value for a t-value, we typically consult a t-distribution table or use statistical software. In this case, with 5 degrees of freedom and a t-value of 2.73, we look up the critical value or use software to find the corresponding p-value. The p-value associated with a t-value of 2.73 and 5 degrees of freedom is approximately 0.05.
The p-value of 0.05 indicates that there is a 5% chance of obtaining a t-value as extreme as 2.73 or more extreme, assuming the null hypothesis is true. Generally, a p-value of 0.05 or lower is considered statistically significant, implying that the observed result is unlikely to have occurred by chance alone. If the p-value is below a predetermined significance level (often denoted as α, commonly set at 0.05), we reject the null hypothesis in favor of an alternative hypothesis. If the p-value is above the significance level, we fail to reject the null hypothesis.
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What is 3 times 3 +77-23/4
Answer:
80.25
Step-by-step explanation:
The height at time t (in seconds) of a mass, oscillating at the end of a spring, is s(t) = 300 + 16 sin t cm. Find the velocity and acceleration at t = pi/3 s. v(pi/3) = a(pi/3) =
The height at time t (in seconds) of a mass, oscillating at the end of a spring, is s(t) = 300 + 16 sin t cm. We have to find the velocity and acceleration at t = π/3 s.
Let's first find the velocity of the mass. The velocity of the mass is given by the derivative of the position of the mass with respect to time.t = π/3 s
s(t) = 300 + 16 sin t cm
Differentiating both sides of the above equation with respect to time
v(t) = s'(t) = 16 cos t cm/s
Now, let's substitute t = π/3 in the above equation,
v(π/3) = 16 cos (π/3) cm/s
v(π/3) = -8√3 cm/s
Now, let's find the acceleration of the mass. The acceleration of the mass is given by the derivative of the velocity of the mass with respect to time.t = π/3 s
v(t) = 16 cos t cm/s
Differentiating both sides of the above equation with respect to time
a(t) = v'(t) = -16 sin t cm/s²
Now, let's substitute t = π/3 in the above equation,
a(π/3) = -16 sin (π/3) cm/s²
a(π/3) = -8 cm/s²
Given, s(t) = 300 + 16 sin t cm, the height of the mass oscillating at the end of a spring. We need to find the velocity and acceleration of the mass at t = π/3 s.
Using the above concept, we can find the velocity and acceleration of the mass. Therefore, the velocity of the mass at t = π/3 s is v(π/3) = -8√3 cm/s, and the acceleration of the mass at t = π/3 s is a(π/3) = -8 cm/s².
At time t = π/3 s, the velocity of the mass is -8√3 cm/s, and the acceleration of the mass is -8 cm/s².
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At the same time a 612 -ft teacher casts a 9-ft shadow, a nearby flagpole casts a 3112 -ft shadow. How tall is the flagpole?
The height of the flagpole is approximately 23,047.11 feet.
To resolve this issue, we can make use of the similar triangles property. The teacher, the flagpole, and each of their corresponding triangles are similar because they have the same angles.
Let h be the height of the flagpole. Then, we can set up the following proportion:
h / 3112 = 612 / 9
When we simplify this ratio, we obtain:
h = (3112 x 612) / 9
h = 207424 / 9
h ≈ 23,047.11 feet
Hence, the flagpole is roughly 23,047.11 feet tall.
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A nationwide furniture company wants to survey their customers to determine whether or not they are providing quality customer service across the United States. They have 140 stores with an average of about 3,000 customers each per month. Which survey group would produce a valid sample?
Which input value produces the same output value for the two functions?
x = –12
x = –9
x = –6
x = –3
Answer:
i think it’s -3 i’m not sure tho
Step-by-step explanation:
answer
x=-6
Step-by-step explanation:
Hi please help. i’ve been stuck on this for 5 minutes
If a polynomial function f(x) has roots 0, 4, and 3 + StartRoot 11 EndRoot, what must also be a root of f(x)?
Answer:
3 - √11Step-by-step explanation:
If the polynomial function has rational coefficients, then the missing root must be conjugate with 3 + √11, which is achieved by reversing the sign of root:
3 - √11\( \LARGE{ \underline{\underline{ \purple{ \bf{Required \: answer:}}}}}\)
Since 3 roots are rational but one of the four is irrational. Then, there must be a conjugate pair for that which we can do by reversing the sign between the rational and the non-rational part.
Hence, Another root of the polynomial function f(x) will be ofcourse the conjugate pair of 3 + √11 i.e. 3 - √11 (Ans)
here are six numbers
-7 -5 -3 3 1 -1
arrange the cards into three pairs with the same total
Answer:
-7 and 3
-5 and 1
-3 and -1
Step-by-step explanation:
-7 + 3 = -4
-5 + 1 = -4
-3 + -1 = -4
Jamie says that these terms would simplify to 3ly.
Leslie says the terms would simplify to 7y.
Who do you agree with and why?
Answer:
I agree with Leslie. You must add the first terms to get 19y. then when you add -12y, you subtract 12y from 19y to get 7y.
Step-by-step explanation:
17y + 2y - 12y = 19y - 12y = 7y
Answer: I agree with Leslie. You must add the first two terms to get 19y. Then when you add -12y, you subtract 12y from 19y to get 7y.
a bookshelf can hold a maximum of 45 books. let b represent the number of books to be shelved. which inequality represents how many books can be put the shelves? b>45
b < 45 represents the inequality of how many books can be put on the shelves.
An inequality is a mathematical statement that shows the relative size or ordering of two values. It is represented using symbols such as "<" (less than), ">" (greater than), "≤" (less than or equal to), "≥" (greater than or equal to), and "≠" (not equal to).
The inequality that represents how many books can be put on the shelves is:
b < 45
This inequality states that the number of books to be shelved, represented by b, must be less than 45 in order to fit on the bookshelf.
The inequality "b > 45" would represent a scenario in which the number of books to be shelved is greater than 45, which is not possible given the constraint that the bookshelf can hold a maximum of 45 books.
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A radio is #5400 when a discount of 14%is given for each.What is the cash price?
The cash price of one radio after a 14% discount is $4644.
The price of a radio is $5400. After giving a 14% discount for each radio, what will be the cash price?
Solution: The given price of the radio is $5400. The discount given on each radio is 14%.
Let's calculate the discount: Discount% = 14% Discount = (Discount%/100%) × Selling Price Discount = (14/100) × $5400 Discount = $756 Therefore, the discount on one radio is $756.
The cash price of one radio after a 14% discount is: Cash Price = Selling Price - Discount Cash Price = $5400 - $756Cash Price = $4644 Therefore, the cash price of one radio after a 14% discount is $4644.
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Chef Part A ROOFING A roofer rests a ladder at a height of 12 feet against a building so that the base of the ladder is x feet from the bottom of the side of the building, forming a 71.6° angle with the ladder and ground. Find the distance from the bottom of the ladder to the side of the building. a. Write an equation that can be used to find the distance from the bottom of the ladder to the side of the building. Part B b. How far is the bottom of the ladder from the side of the building? Round to the nearest tenth if necessary.
Answer:
A: tan(71.6°) = (12 ft)/BG4.0 ftStep-by-step explanation:
You want an equation and its solution for the distance from a building to the base of a ladder leaning at an angle of 71.6° to a point 12 ft up the side of the building.
Part A. EquationThe tangent function gives the relation between the legs of a right triangle:
Tan = Opposite/Adjacent
In the attached diagram, that tells us ...
tan(71.6°) = BL/BG
The equation that can be used to find the distance BG is ...
tan(71.6°) = (12 ft)/BG
Part B. DistanceThe solution to the equation is ...
BG = (12 ft)/tan(71.6°) ≈ 4.0 ft
The bottom of the ladder is about 4.0 feet from the side of the building.
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Use the exchange rate £1 = €1.13 to convert €339 into £.
Answer:
£383.07
Step-by-step explanation:
339 X 0.13=44.07
44.07+339=£383.07
The least multiple of 5 which is divisible by both 3 and 4 is -
Answer:
60
Step-by-step explanation:
The least multiple of 5 which is divisible by both 3 and 4 is 60
PLEASE HELP ME OUT I DONT UNDERSTAND!!
Answer:
1.) Rate of Change (can't create a table sorry)
2.) Equation
Step-by-step explanation:
QUESTION 4 of 10: The Small Business Administration guarantees some loans. The fee for this can range up to 3.75%. On a $1m business
loan, how high could the fee be?
a) $30,500
b) $33,000
c) $36,000
d) $37,500
Answer: d) $37,500
Step-by-step explanation:
The highest fee for the loan of 1m dollars can be d) 37500 dollars.
What is percentage?A percentage is a value per hundredth. Percentages can also be converted into fractions by dividing it by a hundred and simplifying decimals by dividing the percentage value by a hundred.
We know 1 million dollars is 1,000,000 dollars which is the loan amount and the highest rate of fee is 3.75%.
∴ The highest fee can be 3.75% of 1,000,000 dollars which is,
= (3.75/100)×1,000,000 dollars.
= 0.0375×1000000 dollars.
= 37500 dollars.
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1) Find the area of a regular hexagon with an apothem of 10.4 cm and a side length of 12 cm. (round to the near
A) 94 cm2
B) 187 cm2
c) 374 cm2
D) 749 cm2
Answer:
the answer is C
Step-by-step explanation:
hope its help
Answer:
C ) 374
Step-by-step explanation:
I took the test and got it right.
what is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4 l = 3 ml = –2 ms = 1/2
The maximum number of electrons in an atom with the given set of quantum numbers is determined by the Pauli exclusion principle and the principle of maximum multiplicity.
The quantum numbers provided are n = 4 (principal quantum number), l = 3 (azimuthal quantum number), ml = -2 (magnetic quantum number), and ms = 1/2 (spin quantum number).
For a given value of l, there are (2l + 1) possible values of ml. In this case, with l = 3, there are 2l + 1 = 7 possible values of ml (-3, -2, -1, 0, 1, 2, 3).
According to the Pauli exclusion principle, no two electrons in an atom can have the same set of four quantum numbers. This means that each electron must have a unique combination of n, l, ml, and ms.
Since ms = 1/2, there are two possible spin orientations for each value of ml. Therefore, for the given set of quantum numbers, there can be a maximum of 2 electrons for each value of ml.
Hence, the maximum number of electrons in an atom with the given set of quantum numbers is 2 * (2l + 1) = 2 * 7 = 14.
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Hello.
I need help with this question please.
A bag contains red, blue and yellow counters in the ratio 2:3:5
a) What fraction of the counters are red?
b) 9 of the counters are blue. How many of the counters are yellow?
c) How many counters are in the bag?
Pls reply with answers to a,b and c please.
Thanks
Answer:
a) 2/10
b) 15
c) 30
Step-by-step explanation:
Ratio: 2:3:5 = R:B:Y
If we add them all together, we can find the denominator for the fraction of how many counters are in the bag. 2+3+5 = 10.
If the ratio for R = 2, then the fraction is 2/10 (simplified)
If 9 of the counters are blue, to find the number of the other counters, we multiply the ratio numbers by 3 (because 3 x 3 is 9). So, the number of red counters is (2x3) 6, blue is 9, and yellow is (5x3) 15.
Now, to find the total amount, we can add 6, 9, and 15 together to get 30.
Hope this helps. If you require further explanation, let me know!
- profparis
What is the value of this expression when c = -4 and d = 10?
1/4(c3+ d2)
A. 2
B. 9
C. 21
D. 41
Answer:
The answer is 2
Step-by-step explanation:
What is the slope of the line shown in the graph above ?
Answer:
Step-by-step explanation:
1/2
rise/run
count upward from -2 then right 4
then get your answer