Answer: D. 143
Step-by-step explanation:
31 times 4.26 = 132.06 + 10.908 = 142.968 which simplifies to 143 because you round up.
The best line of fit for the maximum depth of the shoreline would be: D. 143 feet
How to solve for the depth of the shorelineWe have the line of fit as
y = 4.26x + 10.908.
The question has specified x as 31 miles which is the miles of shore line.
We have to solve for the value in the line of best fit
y = 4.26*31 + 10.908
y = 132.06 + 10.908
y = 142.968
This is approximately D. 143 feet
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When measuring variables, it is often preferable to use a small sample size because:______.
When measuring variables, it is often preferable to use a small sample size because the smaller the sample the greater the chance of a spurious result.
What are variables?A variable is defined as any property, number, or amount that can be measured or counted. A variable is also known as a data item. Variables include age, business revenue and expenses, country of birth, capital expenditure, class grades, eye color, and vehicle type. A variable in research is essentially a person, place, object, or phenomenon that you are attempting to quantify in some way. The simplest way to comprehend the distinction between a dependent and independent variable is to consider what the words tell us about the variable in question. When measuring variables, small sample size is frequently preferred because the smaller the sample, the greater the likelihood of a misleading result.Therefore, when measuring variables, it is often preferable to use a small sample size because the smaller the sample the greater the chance of a spurious result.
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about 2% of the population has a particular genetic mutation. 100 people are randomly selected. find the standard deviation for the number of people with the genetic mutation in such groups of 100.
The standard deviation for the number of people with the genetic mutation in such groups of 100 is 1.4
From the information given,
About 2% of the population has a particular genetic mutation, and 100 people are randomly selected.
The standard deviation for the number of people with the genetic mutation in such groups of 100 is obtained below;
The required standard deviation is,
p = 0.02 and n = 100;
1 - p = 1 - 0.02
= 0.98
σ = \(\sqrt{n*(1-p)*p}\)
σ = \(\sqrt{100*0.02*0.98}\)
σ = 1.4
The standard deviation for the number of people with the genetic mutation in such groups of 100 is 1.4
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When filled to the brim, a swimming pool can hold 9.745 cubic yards of water. Calculate the width of the swimming pool if it has a length of 3 yards and a height of 2 yards.
The width of the swimming pool is 1.624yards.
What is volume?In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
Here, we have,
a swimming pool can hold 9.745 cubic yards of water.
i.e. V = 9.745
it has a length of 3 yards and a height of 2 yards.
i.e. l= 3
h=2
so, width = w = V/(l*h)
i.e. w = 1.624
Hence, the width of the swimming pool is 1.624yards.
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The directions the Clean- All say to mix 1 1/2 cups of cleaner with 2 quarts of water. The directions for Mega- Clean say to mix 3 1/2 cups of cleaner with 1 gallon of water. Which solution has more cleaner per quart of water?
(1 gallon = 4 quarts) I don't understand.
What is the positive square root of 16?
Answer:
4
Step-by-step explanation:
because The square root of 16 is 4, which is a rational number.
Answer:
4
Step-by-step explanation:
4. Using the graph below, what would the y-value (range) be for an x-value (domain) of -1? Be careful not to switch your x's and y's!
O-S
Answer:
-5
Step-by-step explanation:
the y-intercept at x = -1 is -5
how many sides do 5 quadrilateral, 4 dodecagons, and 1 hexagon have in all?
The answer is 74.
I had this math problem on IXL and I got this answer.
Answer:
The sum of all the geometrical figures in this questions equals 74 total sides - Quadrilaterals have four sides (rectangles, rhombi), Dodecagons have twelve sides, Hexagons have six sides.
5 Quadrilaterals - 4 * 5 = 20
4 Dodecagons - 12 * 4 = 48
1 Hexagon - 6 * 1 = 6
20 + 48 + 6 = 74 total sides.
select the correct answer. which expression is equivalent to this polynomial? 9x2 4 a. (3x 2i)(3x − 2i) b. (3x 2)(3x − 2) c. (3x 2i)2 d. (3x 2)2
The polynomial 9x^2 + 4 is equivalent to (3x+2i)(3x-2i). The answer is A.
Polynomials are algebraic expressions that consist of variables and coefficients where arithmetic operations can be performed.
A polynomial is expanded if no variable appears within parentheses and all like terms have been combined.
To expand a polynomial, multiply its factors (often by using the distributive property) or perform the indicated operations. Then combine all like terms.
Expanding each of the options provided using FOIL method:
a) (3x+2i)(3x-2i)
= 9x^2 - 2ix + 2ix - 4i^2
= 9x^2 - 4i^2 *(i^2 = -1) note that i is an imaginary number and i squared is equal to -1
= 9x^2 - 4(-1)
= 9x^2 + 4
b) (3x+2)(3x-2)
= 9x^2 + 6x - 6x - 4
= 9x^2 - 4
c) (3x + 2i)^2
= 9x^2 + 6ix + 6ix + 4i^2 *(i^2 = -1)
= 9x^2 + 12ix - 4
d) (3x + 2)^2
= 9x^2 + 6x + 6x + 4
= 9x^2 + 12x + 4
Hence, the polynomial 9x^2 + 4 is equivalent to (3x+2i)(3x-2i). The answer is A.
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4x^4+31x^2-90=0
Help
Answer:
The answer would not be 0, it would be -12, and here is why.
4x^4+ 16x+31x^2=62x-90.
In thia case i ignpored the variable, i think its a variable..
You woulkd add 62+16, you get 78.
78-90= -12
endure all, a manufacturer of batteries claims that the lifetime of their batteries is normally distributed with a mean of 500 hours and a standard deviation of 40 hours. what is the probability that an endure all battery selected at random will last more than 610 hours? a) 0.0228 b) 0.9970 c) 0.0030 d) 0.9965 e) 0.0035 f) none of the above.
The probability that an endure all battery selected at random will last more than 610 hours is 0.3%
What is the Z score?
A Z-score is a metric that quantifies how closely a value relates to the mean of a set of values. Standard deviations from the mean are used to measure Z-score. If a Z-score is 0, it indicates that the data point's score is identical to the mean score.
Z score is used to determine by how many standard deviations the raw score is above or below the mean, The z score is given by:
\(z = \frac{x - \mu}{\sigma}\)
where,
x = raw score
μ = mean
σ = standard deviation
Given that μ = 500, σ = 40, for x > 610:
z = (610 - 500) / 40
= 2.75
From the normal distribution table, P(z > 2.75) = 1 - P(z < 2.75) = 1 - 0.9970 = 0.0030 = 0.3%
Hence, the probability that an endure all battery selected at random will last more than 610 hours is 0.3%
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A student must choose from 7 classes to take at 8:00 a.m., 4 classes to take at 9:00 a.m., and 3 classes to take at
10:00 a.m. how many ways can the student arrange the schedule?
There are 84 ways a student can arrange the schedule consisting of 8;00 am classes ,9;00 am classes and 10;00am classes.
what is fundamental counting principle?The fundamental counting principle states that if there are p ways to do one thing, and q ways to do another thing, then there are p×q ways to do both things For example Suppose we have 3 shirts (call them A , B , and C ), and 4 pairs of pants (call them w , x , y , and z ). Then we have 3×4=12.
How do we find the fundamental principle of counting?If an event can occur in m different ways, and another event can occur in n different ways, then the total number of occurrences of the events is m × n.Then we can use formula to find.
Now we get
8;00 am classes =7 ways
9;00 am classes=4 ways
10;00 am classes=3 ways
So that the event could occur in following sequence
7.4.3 = 84 ways
Hence 84 ways can student arrange the schedule.
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Question
Choose the correct form of the missing verb in each sentence.
The field trip for the preschoolers
✔ starts
at 10:00 a.m.
Several of the students in the class
✔ arrive
early.
Can some answer,I don’t quite understand this?!
Answer:
x = 12
DEG = 130 degrees
Step-by-step explanation:
Since EF bisects the angle that means that the two "mini" angles are equal degrees. So 6x-7 (DEF) = 2x+41 (GEF)
6x-7=2x+41
-2x -2x
4x-7=41
+7 +7
4x=48
/4 /4
x=12
so now pick an equation and replace x with 12, since you know that x=12
GEF = 2x+41
GEF = 2(12)+41
GEF = 24+41
GEF = 65 degrees
Remember how the DEF and GEF and equal degrees? That means that they are both 65 degrees, so by adding the angles together you get DEG
65 + 65 = 130
can someone please help me !!!
:D 2 btw
Step-by-step explanation:
use recursion to write a static method countvowels that inputs a string and outputs the number of vowels it contains.
File name: “TestClass.java” import java.util.Scanner; public class TestClass {
What is recursion?A recursive function is one that generates a series of terms by iterating over or using its foregoing terms as input. This function is typically understood in terms of an arithmetic-geometric series with terms that share similar differences.
File name: “TestClass.java”
import java.util.Scanner;
public class TestClass {
//Define main() method
public static void main(String[] args) {
// Construct a Scanner object
Scanner scr = new Scanner(System.in);
//Ask the user to enter a decimal number
System.out.print("Enter a decimal number: ");
//Get the decimal number from the user
int decinum = scr.nextInt();
// Display the binary number
System.out.println("The binary equivalent of the decimal value"
+ decinum + " is " + dec2Bin(decinum));
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please please help mey how do I expand and simplify this thingy
Answer:
69w^2 + 17w
Step-by-step explanation:
1. PEMDAS - simplify using steps
2. Put together all like terms.
3. Add or subtract together.
5w(14w) + 3w^2 + 8w - 4w^2 + 9w
69w^2 + 17w
Hope this helps:)
Answer:
9w² - 18w
or
9w(w - 9)
Step-by-step explanation:
Let's start by applying the distributive property to all of the expressions:
5w(2w - 7) + w(3w + 8) - 4w² + 9w
10w² - 35w + 3w² + 8w - 4w² + 9w
Now, combine the like terms:
9w² - 18w
You could stop there, but if you wanted to, you could factor out a 9 and a w:
9w(w - 9)
Hope that helps :) If you have any questions, please comment on this thread! I'm more than willing to help!
Ridgewood Savings Bank charges a $27 per check overdraft protection fee. On July 8, Nancy had $1,400 in her account. Over the next 4 days, the following checks arrived for payment at her bank: July 9, $1,380.15; July 10, $670 and $95.67; July 11, $130; and July 12, $87.60.
How much will she owe the bank after July 12?
If Ridgewood Savings Bank charges a $27 per check overdraft protection fee. The amount she will owe the bank after July 12 is: $1,071.42.
What is total obligation?Total obligation can be defined as the amount a person owe another person or the debt amount a borrower is expected to payback to a lender.
Balance $1,400
July 9 check ($1,380.15)
Balance $19.85
July 10 check ($765.67)
($670 + $95.67)
Balance -$745.82 (Overdraft)
Now let find the amount she owe
Balance -$745.82
July 11 check $130
Balance -$875.82
July 12 check $87.60
Ending balance -$963.42
Overdraft fee $108
($27 ×4)
Total obligation -$1,071.42
Therefore her total obligation is $1,071.42.
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Elsie's aunt borrows $400 with an interest rate of 1.5%. How much interest will she pay after 4 years?
Answer: $24 after 4 years
Step-by-step explanation:
1.5% = 0.015
Take 400 times 0.015 = $6 per year
6 times 4 = $24 after 4 years
Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease
The rate of change of the exponential function in this problem represents a decay, and the rate of decrease is of 3.7%.
How to model the exponential function?A decaying exponential function is modeled as follows:
y = a(1 - r)^t.
In which:
a is the initial value.r is the decay rate, as a decimal.The function in this problem is given as follows:
y = 20(0.963)^x.
As 0.963 < 1, this is an exponential decay function, and the decay rate is given as follows:
1 - r = 0.963
r = 1 - 0.963
r = 0.037
r = 3.7%.
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A school is building a rectangular soccer field that has an area of 6000 square yards .the soccer field.must be 40 yards longer than it’s width .write an equation , in standard.form , that can be used to solve for the area .Do not solve the question
Answer:
The equation in standard form is:
x^2-40x-6000 = 0
Step-by-step explanation:
Let the length of the field be x yards.
Now the width of the field is 40 yards less than the length of the field.
Thus, the width of the field would be (x-40) yards
Now, to calculate the area of the field, we simply multiply the length of the field by the width of the field.
Hence;
Since the shape is rectangular, the area is the product of the length and that of the width
x(x-40) =6,000
x^2 -40x = 6,000
x^2-40x-6000 = 0
an unbiased coin is tossed four times. what is the probability that coin lands heads up at least once? (round your answer to three decimal places.)
The probability of getting at least one head is 15/16.
What is probability?
The ratio of positive outcomes to all possible outcomes of an event is known as the probability.
Formula for probability = favourable outcomes/ total outcomes
Main body:
if 4 coins are tossed , total no. of outcomes = 2⁴ = 16
In a toss there are 2 outcomes T or H
so, Probability of getting Head = 1/2
The probability of getting at least 1 head = 1- probability of getting no heads
⇒1 - Probability of getting tail in 4 tosses
⇒ 1 - (1/2)⁴
⇒ 1 - 1/16
⇒ 15/16
So the probability of getting at least one head is 15/16.
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Help Please I will give 20 points only Indonesian
Kelly wants to fence in a rectangular space in her yard, 6 meters (length) by 10.5 meters (width). the salesperson at the supply store recommends that she put up posts every 1.5 meters. the posts cost $2.69 each. kelly will also need to buy wire mesh to string between the posts. the wire mesh is sold by the meter from large rolls and costs $5.96 a meter. a gate to fit in one of the spaces between the posts costs $25.39. seven staples are needed to attach the wire mesh to each post. staples come in boxes of 50, and each box costs $3.99. how much will the materials cost before sales tax?
The total materials cost before sales tax is $297.21.
How the total materials cost is determined:The total materials cost is the result of the addition of the total cost of posts, wire mesh, gate, and staples, as follows.
The length of the rectangular space = 6 meters
The width of the space = 10.5 meters'
The perimeter of the space = 33 meters [2(6 + 10.5)]
The space between posts = 1.5 meters
The number of posts = 22 (33 ÷ 1.5)
The cost per post = $2.69
a) The cost of the posts = $59.18 ($2.69 x 22)
The cost of wire mesh:
Cost per meter = $5.96
The number of meters of wire mesh = 33 meters
b) Total cost of the wire mesh = $196.68 ($5.96 x 33)
c) Cost of the gate = $25.39
Cost of Staples:
The number of staples per post = 7
The total number of staples required = 154 (22 x 7)
The number of boxes of staples = 4
The cost per box = $3.99
d) The total cost of staples = $15.96 (4 x $3.99)
The total cost of materials = $297.21 ($59.18 + $196.68 + $25.39 + $15.96)
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-22/3
4/3
6/17
2/13
WHICH ONES ARE THE SMALLEST!! PLEASE HELP OR ANSWER THSI!!
Option (a) \(-\frac{23}{3}\) is the smallest among the four option because it has negative value. We can easily find it by seeing negative value but we do by taking LCM of denominator .
What do you mean by term LCM?The smallest multiple that two or more numbers share is known as the least common multiple. Least Common Multiple short form is LCM.
We can find LCM of these number by taking least common multiple.
LCM of 3, 3, 17, 13 is 663 .
(a) \(-\frac{22}{3} *663 = -22*221\)
\(= -4862\)
(b) \(\frac{4}{3} * 663 = 4 * 221\)
\(= 884\)
(c) \(\frac{6}{17} *663 = 6 * 17\)
\(= 102\)
(d) \(\frac{2}{13}*663 = 2*51\)
\(=102\)
So, the Smallest no \(-\frac{22}{3}\).
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What is the measure of angle DEG on circle O
9514 1404 393
Answer:
50°
Step-by-step explanation:
Angle DEG is also angle DEC. It subtends arc DC as does inscribed angle DFC. Inscribed angles that subtend the same arc have the same measure.
∠DFC = ∠DEG = 50°
Answer: 50
Step-by-step explanation: Khan Academy
for a line graph, removing which of the following items would create the cleanest look? review later chart name gridlines tick marks axis titles
To create a clean and minimalist look for a line graph, it is generally recommended to remove the gridlines, tick marks, and possibly the axis titles. These elements can clutter the graph and distract from the main focus, which is the data itself.
The primary objective of a line graph is to visually represent the data in a clear and concise manner. To achieve a clean look, it is often beneficial to remove unnecessary elements that do not contribute directly to the understanding of the data.
Gridlines, while they can assist in reading values, can create visual noise and make the graph appear cluttered. Removing gridlines allows the data points to stand out more prominently. Similarly, tick marks along the axes can be reduced or eliminated to minimize distractions and focus attention on the plotted data.
Axis titles, though important for providing context, may sometimes be redundant or self-explanatory based on the nature of the graph or if the data is accompanied by clear labels. If the graph is already labeled adequately, removing the axis titles can help create a cleaner and less cluttered appearance.
It's important to consider the specific context and intended audience of the graph. Adjustments should be made in a way that maintains clarity and readability while achieving a clean and visually appealing design.
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DETAILS SCALCET9 5.2.071. If m s f(x) S M for a sxsb, where m is the absolute minimum and M is the absolute maximum off on the interval [a, b], then m(b-a)s °) dx (x) dx = M(b-a). Us
The statement is true: if the function f(x) is bounded by m and M on the interval [a, b], where m is the absolute minimum and M is the absolute maximum, then the integral of f'(x) over the same interval is equal to M(b-a) - m(b-a). This relationship holds true for any continuously differentiable function.
Let F(x) be an antiderivative of f'(x). By the Fundamental Theorem of Calculus, we have:
∫[a,b] f'(x) dx = F(b) - F(a)
Since f(x) is bounded by m and M, we know that m ≤ f(x) ≤ M for all x in [a, b]. This implies that F'(x) = f(x) is also bounded by m and M. Thus, F(x) takes on its absolute maximum M and its absolute minimum m on [a, b].
Therefore, we have:
m ≤ F'(x) ≤ M
Integrating both sides of the inequality over the interval [a, b], we get:
∫[a,b] m dx ≤ ∫[a,b] F'(x) dx ≤ ∫[a,b] M dx
m(b-a) ≤ F(b) - F(a) ≤ M(b-a)
But we know that F(b) - F(a) is equal to the integral of f'(x) over [a, b]. Therefore, we can rewrite the inequality as:
m(b-a) ≤ ∫[a,b] f'(x) dx ≤ M(b-a)
Hence, we can conclude that:
∫[a,b] f'(x) dx = M(b-a) - m(b-a) = (M - m)(b-a)
Therefore, the integral of f'(x) over the interval [a, b] is equal to M(b-a) - m(b-a).
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Four times the sum of 5 and some number is 20. What is the number?
This is the answer to your problem
The area of a rectangle is 8811m if the width of the garden is 89 m what’s the length
The length of the garden is 99 m.
What’s the length?The formula for the area of a rectangle is:
Area = Length x Width
We are given that the area of the rectangle is 8811 \(m^{2}\) and the width is 89 m. Substituting these values into the formula, we get:
8811 \(m^{2}\) = Length x 89 m
To solve for the length, we can divide both sides of the equation by 89 m:
Length = 8811 \(m^{2}\) / 89 m
Simplifying, we get:
Length = 99 m
Therefore, the length of the garden is 99 m.
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38. The vertices of a trapezoid are points (0, a), (0,0), (6,0), and (c, a). Find the area in terms
of a, b, and c.
Answer:
(0,6), (6,0)
Step-by-step explanation:
Answer:
Whatttttttttttttttttt
Evaluate a + 4 when a =7
Answer:
11
Step-by-step explanation:
7 + 4 = 11
Answer:
11
Step-by-step explanation:
If a = 7, then a + 4 = 7 + 4 = 11
Hope that this helps!