It's tough to know for sure what a black dot on the sea might mean without more information. A ship, boat, or other watercraft may occasionally be indicated by a black dot on the water.
What black dot indicate about sea?Depending on the situation, a black dot on the sea could mean a variety of various things. Here are some potential examples:
A black dot on a nautical chart could represent a buoy, beacon, marker, or other navigating aid.
A black dot in the ocean may be the result of a bird, a fish jumping out of the water, or other marine life, depending on your distance.
A black dot may represent the existence of a microscopic organism or particle if you are using a microscope or other scientific equipment to see the ocean.
Therefore, 1. Pacific Ocean 2. South Carolina 3. Georgia 4. Alabama 5. (x,y) ----> (x+4,y-10) 6. Colorado 7. Pennsylvania 8. Minnesota and Wisconsin, 8. Missouri 9. Reflect over y-axis and then reflect over x-axis.
10. Oregon 11. Kansas or Oklahoma, 12. Tennessee
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You are thinking about changing employment. Your goal is to work for three years and then return to university full-time, in pursuit of an advanced degree. A potential employer just offered you an annual salary of R55 000, R60 000, and R65 000 a year for the next three years, respectively. All salary payments will be made as lump sum payments at the end of each year. The offer also includes a starting bonus of R4 500, payable immediately. What is this offer worth to you today, at a discount rate of 8,25%?
Answer:
55K+60K+65K=184K
100% - 8.25%=91.75%
184000x91.75%=168820
Ans:168K
Answer:
Step-by-step explanation:
To determine the value of the offer today, we need to calculate the present value of all the cash flows using a discount rate of 8.25%.
First, let's calculate the present value of the salary payments.
PV(year 1 salary) = R55 000 / (1 + 0.0825)^1 = R50 760.87
PV(year 2 salary) = R60 000 / (1 + 0.0825)^2 = R51 423.95
PV(year 3 salary) = R65 000 / (1 + 0.0825)^3 = R52 110.69
Next, let's calculate the present value of the starting bonus.
PV(starting bonus) = R4 500 / (1 + 0.0825)^0 = R4 500
Finally, we can add up all the present values to find the total present value of the offer:
PV(total offer) = PV(year 1 salary) + PV(year 2 salary) + PV(year 3 salary) + PV(starting bonus)
PV(total offer) = R50 760.87 + R51 423.95 + R52 110.69 + R4 500
PV(total offer) = R158 795.51
Therefore, the offer is worth R158 795.51 to you today at a discount rate of 8.25%.
Simplify 1/cos x + 1/cos x -1
Answer:
-2cotxcscx
Step-by-step explanation:
Step 1: Find a common denominator
Step 2: Simplify
A cabinet was ordered from a carpenter with a volume of 1.08 m³. He wrote down the following measurements: 1.2 m wide and 1.8 m high, but forgot to write down the depth. Therefore, the depth measurement is
The depth of this cabinet is equal to 0.5 m³.
VolumeVolume is a three-dimensional measure that indicates the space occupied by an object. It is a physical quantity that expresses the amount of space an object occupies in three dimensions - length, width and height.
Note that this cabinet has the shape of a parallelepiped, and its volume is found by multiplying its dimensions. Calculating the depth measurement, we have:
1,08 m³ = 1,2 m * 1,8 m * p
p = 1,08 m³/(1,2 m * 1,8 m)
p = 1,08 m³ / 2,16 m³
p = 0,5 m
Find the perimeter of a rectangle with w=5 and l=9
Answer:
28 units
Step-by-step explanation:
The perimeter of a rectangle is given by the formula P = 2(l + w), where l is the length and w is the width.
Substituting l = 9 and w = 5, we get:
P = 2(9 + 5) = 2(14) = 28
Therefore, the perimeter of the rectangle is 28 units.
Canada had 12,968,000 visitors in 2002 while Mexico had 9,807,000 visitors. How many more people visited Canada?
Step-by-step explanation:
To find out how many more people visited Canada than Mexico, we need to subtract the number of visitors to Mexico from the number of visitors to Canada:
12,968,000 - 9,807,000 = 3,161,000
Therefore, 3,161,000 more people visited Canada than Mexico in 2002.
A solid metal cone has radius 1.65 cm and slant height 4.70 cm. Find the angle the, slant height makes with the base of the cone.
Answer:
Step-by-step explanation:
We can use trigonometry to find the angle between the slant height and the base of the cone.
The base of the cone is a circle with radius 1.65 cm. The slant height is the hypotenuse of a right triangle whose other two sides are the height (which we don't know) and the radius (1.65 cm).
Using the Pythagorean theorem, we can find the height of the cone:
height^2 = (slant height)^2 - (radius)^2
height^2 = (4.70 cm)^2 - (1.65 cm)^2
height^2 = 19.96 cm^2 - 2.72 cm^2
height^2 = 17.24 cm^2
height = sqrt(17.24) cm
height = 4.15 cm (rounded to two decimal places)
Now we can use trigonometry to find the angle between the slant height and the base of the cone.
tan(angle) = opposite / adjacent
tan(angle) = height / radius
tan(angle) = 4.15 cm / 1.65 cm
tan(angle) = 2.515
Taking the inverse tangent (or arctan) of both sides, we get:
angle = arctan(2.515)
angle = 70.32 degrees (rounded to two decimal places)
Therefore, the angle between the slant height and the base of the cone is 70.32 degrees.
Simplify the expression to a polynomial in standard form
(x−3)(2x^2 −5x−5)
Answer:
Step-by-step explanation:
To simplify the expression, we can use the distributive property of multiplication:
(x−3)(2x^2 −5x−5) = 2x^3 −5x^2 −5x −6x^2 +15x +15
Next, we can combine like terms:
2x^3 −5x^2 −6x^2 −5x +15x +15 = 2x^3 −11x^2 +10x +15
Therefore, the simplified polynomial in standard form is 2x^3 −11x^2 +10x +15.
Part D
The table in part C did not have a row for 10°. Look at the values of other powers of 10 in the table. Given the pattern of the values, what would
the value of 10° be?
Therefore, we can assume that the value of 10⁰ would be 1, based on the pattern of the other values in the table.
What is Celsius?Celsius (symbol: °C) is a temperature scale used in the metric system. It is named after the Swedish astronomer Anders Celsius, who first proposed it in 1742. The Celsius scale is based on the properties of water, with 0°C defined as the freezing point of water, and 100°C defined as the boiling point of water at standard atmospheric pressure. Celsius is widely used in many countries around the world as a unit of temperature measurement, including in scientific and everyday contexts.
Given by the question.
In the table from part C, we see that as the power of 10 decreases by 1, the value of 10 raised to that power also decreases by a factor of 10. For example, we see that 10² = 100, 10¹ = 10, and 10⁰ = 1.
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In the image below, arc AB has a measure of 32 degrees.
What is the measure of the inscribed angle that intercepts it? (Angle ACB)
Therefore , the solution of the given problem of angles comes out to be the engraved angle ACB is 16 degrees in size.
An angle meaning is what?Using Cartesian coordinates, the top and bottom walls divide the circular lines that make up a skew's ends. There is a chance that two poles will meet at a junction point. Angle is another outcome of two things interacting. They mirror dihedral forms the most. A two-dimensional curve can be created by arranging two line beams in various ways at their extremities.
Here,
A circle's inscribed angle has a measure that is half that of the interrupted arc. As a result, the inscribed angle ACB intersecting arc AB with a measure of 32 degrees will have a measure of:
=> Angle ACB = 32 / (1/2)
=> ACB = 16 degree angle
As a result, the engraved angle ACB is 16 degrees in size.
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- 1 and combining like terms
(x² - 4x+9)-(3x² - 6x-9)
Combining the like terms of the expressions (x² - 4x+9)-(3x² - 6x-9) gives -2x² + 2x + 36
What are algebraic expressions?Algebraic expressions are simply described as those mathematical expressions that are known to consist of certain variables, coefficients, terms, factors and constants.
Algebraic expressions are also identified with arithmetic operations. These arithmetic operations are;
SubtractionBracketDivisionParenthesesMultiplicationAdditionFrom the information given, we have;
(x² - 4x+9)-(3x² - 6x-9)
First, expand the bracket
x² - 4x + 9 - 3x² + 6x + 27
Now, collect the like terms
x²- 3x² - 4x + 6x + 9 + 27
Add or subtract
-2x² + 2x + 36
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In ΔLMN, n = 27 inches, l = 70 inches and ∠M=149°. Find ∠N, to the nearest degree.
Using trigonometric functions, we can find that the value of the angle N is 3°.
What are trigonometric functions?The six fundamental trigonometric operations make up trigonometry. Trigonometric ratios are useful for describing these methods. The sine, cosine, secant, co-secant, tangent, and co-tangent functions are the six fundamental trigonometric functions. On the ratio of a right-angled triangle's sides, trigonometric identities and functions are founded. Trigonometric formulas are used to determine the sine, cosine, tangent, secant, and cotangent values for the perpendicular side, hypotenuse, and base of a right triangle.
Here, using the cosine theorem:
CosM = n² + l² - m²/2nl
⇒ Cos 149° = 27² + 70² - m²/2 × 27 × 70
⇒ -0.981 = 729 + 4900 - m²/3780
⇒ 5629 - m² = -3708
⇒ m² = 9337.
Now Cos N = m² + l² - n²/2ml
= (9337 + 4900 - 729) / (2 × √9337 × 70)
= 0.9985
Cos N = 0.9985
Putting [tex]Cos^{-1}[/tex] on both sides:
[tex]Cos^{-1}[/tex] Cos N = [tex]Cos^{-1}[/tex] 0.9985
⇒ N ≈ 3°
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The complete question is:
In ΔLMN, n = 27 inches, l = 70 inches and ∠M=149°. Find ∠N, to the nearest degree.
An old building was demolished. 5 dump trucks are used to
transport a total of 2 tons of rubble. How much rubble did each
truck carry?
Domain is now called the ____________ which means before a change
Answer:
Step-by-step explanation:
Domain is now called the "source" which means before a change or transformation. In mathematics, the term "source" is often used to refer to the set of all possible inputs or values that can be fed into a function or transformation, before any changes or transformations take place. The set of all possible outputs or resulting values from the function or transformation is called the "range" or "codomain".
If f(x) =X+2/x^2 -9
and g(x)=11/x^2+ 3x
(a) find f(x) + g(x)
(b) list all of the excluded values
(c) classify each type of discontinuity
The sum of the two functions f(x) + g(x) is (x+2)/(x^2 - 9) + 11/(x^2 + 3x)
Function calculation.
(a) To find f(x) + g(x), we simply add the two functions together:
f(x) + g(x) = (x+2)/(x^2 - 9) + 11/(x^2 + 3x)
(b) To determine the excluded values, we need to look for values of x that make the denominators of the two functions equal to zero. The denominators are:
x^2 - 9 and x^2 + 3x
Setting these equal to zero and solving for x, we get:
x^2 - 9 = 0 => x = ±3
x^2 + 3x = 0 => x(x+3) = 0 => x = 0 or x = -3
Therefore, the excluded values are x = ±3 and x = 0.
(c) To classify the type of discontinuity at each of the excluded values, we need to examine the behavior of the function as x approaches these values.
At x = ±3, the denominators of both functions become zero, which means that the function is undefined at these values. This creates a vertical asymptote, which is a type of infinite discontinuity.
At x = 0, the denominator of g(x) becomes zero, but the denominator of f(x) does not. This creates a removable discontinuity, because we can define f(0) separately to make the function continuous at this point. Specifically, we can set f(0) = 2/(-9) = -2/9 to remove the discontinuity.
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please hep me with these 4 questions in math!!
for the first question, the simplest way I solve reflections is by making negatives positive and positives negative.
question 2:
pi is the irrational number as it does not end
question 3:
Slope is equal to -1/2 or -0.5
as it takes 2 units right to go down by 1 unit
Question 4:
C: $11
I am struggling to correct numbers 1, 3, 4, 5, and 7. I have been working for hours on this.
Answer:
Step-by-step explanation:
1. sinL = 3/5
3. cosL = 4/5
4. sinN = 4/3
5. cos32 = x/14
x = 14(cos32) = 11.9
7. tan75 = 17/x
x = 17/tan75 = 4.56 ≈ 4.6
The sum of twice a number,n, and 14 is 30. Write an equation that models this statement.Then explain how you might use reasoning to find the value of n.
Answer:
2n + 14 = 30
Step-by-step explanation:
Since you know that 2n + 14 = 30, we can determine the values by first subtracting 14 from 30. Our equation would then be 2n = 16. Divide 2 from both sides and n = 8.
This model represents the total on the top and the 2 parts on the bottom.
The surface area of a cylinder is given by the formula SA = 2r2 + 2rh. A cylinder has a radius of 12 cm and a surface area of 1,632 cm^2 . Find the height of the cylinder.
A. 52 cm
B. 56 cm
C. 59 cm
D. 34 cm
In ΔVWX, v = 33 inches, w = 57 inches and ∠X=147°. Find ∠W, to the nearest degree.
The radius of a cylindrical water tank is 4 ft, and its height is 6 ft. What is the volume of the tank?
Use the value 3.14 for it, and round your answer to the nearest whole number.
Be sure to include the correct unit in your answer.
0
4 ft
6 ft
In response to the stated question, we may state that Therefore, the cylinder volume of the tank is approximately 301 cubic feet.
what is cylinder?A cylinder is a three-dimensional polyhedron made up of two congruent parallel circular bases but a curving surface linking the two bases. The bases of a cylinder are all equal to its axis, which is an artificial straight line across the centre of both bases. The volume of a cylinder is the composite of its base area and length. The volume of a cylinder is computed as V = r2h, where "V" represents the volumes, "r" represents the circle of the base, and "h" is the height of the cylinder. The formula to find the volume of a cylinder is:
[tex]V = \pir^2h[/tex]
Where V is the volume, r is the radius, h is the height, and π is a constant value that approximates to 3.14.
[tex]V = 3.14 * 4^2 * 6\\V = 3.14 * 16 * 6\\V = 301.44\\V = 301 ft^3[/tex]
Therefore, the volume of the tank is approximately 301 cubic feet.
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A sweater originally cost $42.75. Last week, Keisha bought it at 20% off.
What is the discount?
O A. $51.30
08 $42.95
c. $8.55
D. $42.55
Answer:
The discount is $8.55, which is option C.
Step-by-step explanation:
To find the discount, we need to calculate 20% of the original price:
Discount = 20% x $42.75
Discount = $8.55
Therefore, the discount is $8.55, which is option C.
What is the surface area of an ice cube that has 4 cm sides?
TA
4 cm
4 cm
The surface area of an ice cube with 4 cm sides is 96 square centimeters.
What is surface area?It is a measurement of the sum of all the areas of the faces, sides, and any other surfaces of an object. For example, a cube has six square faces, each with the same area.
According to question:To find the surface area of an ice cube with 4 cm sides, we need to add up the areas of all six faces. Each face is a square with side length 4 cm, so the area of each face is:
Area of one face = (side length)² = 4 cm × 4 cm = 16 cm²
Since there are six faces on a cube, the total surface area of the ice cube is:
Total surface area = 6 × (area of one face) = 6 × 16 cm² = 96 cm²
Therefore, the surface area of an ice cube with 4 cm sides is 96 square centimeters.
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23 x _ = 23 x 4
(help me)
Answer:
4
Step-by-step explanation:
To solve for the missing value in 23 x _ = 23 x 4, you can use the property of equality to divide both sides by 23. This will give you _ = 4. Therefore the missing value will be 4.
Hope this helped :)
Answer: the answer is 4
Step-by-step explanation: u can divide both sides with 23 and that leaves u with x=4
You want to create a simulation of the following scenario:
In country x 50% of people have blood type O, 25% have blood type A, 12.5% have blood type B, and 12.5% have blood type AB.
In country y, 60% have blood type O, 20% have type A, 10% have type B and 10% have type AB.
What is the best way to assign values for a simulation using random digits table?
Choose answer from photo below! A, B, C, or D : this is the answer I want, not just an explanation please, thank you so much! 100 points!
Thank you :)
The best way to assign values for a simulation using random digits table will be option A.
What will be the simulation?The best way to assign values for a simulation using a random digits table would be to use a table with at least 10 digits (0-9) in each row.
For Country X, we would assign Blood type O with the digits 0-5, Blood type A with digits 6-7, Blood type B with digit 8, and Blood type AB with digit 9. If a digit outside of these ranges is generated, it would be ignored.
For Country Y, we would assign Blood type O with the digits 0-5, Blood type A with digits 6-7, Blood type B with digit 8, and Blood type AB with digit 9. Again, if a digit outside of these ranges is generated, it would be ignored.
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please helppppp i’ll give brainlist
For problems 6 and 7 set up a proportion and solve.
6. The ratio of the birth weight to the adult weight of a male black bear is 3:1000.
7. The measure of the angles in the triangle are 36°, 15 x 36° = 540°, and 19 x 36° = 684°.
What is an angle?An angle is an abstract concept in geometry which is formed by two lines or rays that meet at a common point. An angle is measured in degrees and can be classified by its size as acute, right, obtuse, or reflex. An angle can also be formed by three points or two intersecting planes.
6. The average birth weight is 12 ounces. The average adult weight is 12 x 1000 = 12000 ounces. Since there are 16 ounces in 1 pound, the average adult weight of the male black bear is 12000/16 = 750 pounds.
7. The measures of the angles in a triangle are in the extended ratio 2:15:19.To find the measure of each angle, we can set up an equation using the extended ratio. Let x be the measure of the first angle, then 15x and 19x will be the measures of the other two angles. This can be written as: 2x + 15x + 19x = 360°. Solving this equation, we get x = 36°. Therefore, the measure of the angles in the triangle are 36°, 15 x 36° = 540°, and 19 x 36° = 684°.
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Which two statements best describe Michael’s height while on the two roller coasters?
It switches between negative and positive every 40 seconds. it switches between positive and negative every 80 seconds. So correct statements are B and E.
Describe Algebra?Mathematics' branch of algebra deals with symbols and the formulas used to manipulate them. It is an effective tool for dealing with issues involving mathematical expressions and equations. In algebra, variables—which are typically represented by letters—are used to represent unknowable or variable quantities.
Equations represent mathematical relationships between variables in algebra. An equation is made up of two expressions, one on either side of an equal sign, separated by an equation. Algebraic expressions can involve constants, variables, and mathematical operations such as addition, subtraction, multiplication, and division.
As we can see from the first roller coaster's graph, Michael's height changes from positive to negative after 40 seconds, whereas it was positive for the first 40. It remains negative between 40 and 80 seconds. It continues to be positive from 80 to 120, and so forth.
As a result, every 40 seconds it alternates between negative and positive.
B is accurate.
We can see from the second roller coaster's table that it stays positive from 0 to 80. It continues to be negative from 80 to 160, and so forth.
As a result, every 80 seconds it alternates between positive and negative.
E is accurate.
The complete question is:
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please please please help i’ll give brainlist
The scale factor of PQRS to JKLM is 4/5.
The scale factor of JKLM to PQRS is 5/4.
The value of w, x, and y are 20, 12.5, and 20 respectively.
The perimeter ratio is 4:5.
What is scale factor?In Mathematics and Geometry, the scale factor of a geometric figure can be calculated by dividing the dimension of the image (new figure) by the dimension of the pre-image (original figure):
Scale factor = Dimension of image (new figure)/Dimension of pre-image(actual figure)
Substituting the given parameters into the scale factor formula, we have the following;
Scale factor of PQRS to JKLM = 15/12
Scale factor of PQRS to JKLM = 5/4 or 1.25.
Scale factor of JKLM to PQRS = 12/15
Scale factor of JKLM to PQRS = 4/5 or 0.8.
For the value of w;
15/12 = 25/w
15w = 12 × 25
w = 20
For the value of x;
15/12 = x/10.
12x = 150
x = 12.5
For the value of y:
15/12 = y/16
12y = 15 × 16
y = 20
Perimeter ratio = 12 : 15 = 4:5
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Natalie invests $2,000 into a savings account
which earns 11% per year. In 20 years, how
much will Natalie's investment be worth if
interest is compounded monthly? Round to the
nearest dollar.
Answer:
We can use the formula for compound interest to find the future value (FV) of Natalie's investment:
FV = P * (1 + r/n)^(n*t)
Where:
P is the principal amount (the initial investment), which is $2,000 in this case
r is the annual interest rate as a decimal, which is 11% or 0.11
n is the number of times the interest is compounded per year, which is 12 since interest is compounded monthly
t is the number of years, which is 20
Substituting the values into the formula, we get:
FV =
2
,
000
∗
(
1
+
0.11
/
12
)
(
12
∗
20
)
�
�
=
2,000 * (1.00917)^240
FV = $18,255.74
Therefore, after 20 years of compounded monthly interest at a rate of 11%, Natalie's investment of 2,000 will be worth approximately 18,256.
Answer:
$17,870
Step-by-step explanation:
You must use the formula for compound interest.
A = P(1 + r/n)^nt
I suggest you look it up at some point so that you can do these more easily in the future!
HELP PLEASE
Lee puts $5,000 into a stock market index mutual fund That grew at an average of 6.5% per year for 10 years. Without any added deposits or withdrawals, about how much is in Lee's mutual fund account after only 8 years, if you ignore the come pounding?
how do you do this mathematics?
Answer:
What Mathematics
Step-by-step explanation: