Answer:
10 + 10 = 20 ; 456 + 543 = 999
Step-by-step explanation:
What is bigger 5/6 or 13/18?
If the polar coordinates of the point ( x , y ) are ( r , θ ), determine the polar coordinates for the following points. (Use any variable or symbol stated above as necessary.)
a) -x,y
b)-2x,-2y
c)3x,-3y
I don't understand what they are asking for because i tried the r=sqrt(x^2+y^2) and that theta = tan^-1(y/x) and it was wrong. ...?
⇒Polar Coordinate of point (x,y)=(r,Ф)
The Point (x,y) lies in First Quadrant.
r=Distance from Origin to point (x,y)
[tex]r=\sqrt{x^2+y^2}\\\\ \theta=\tan^{-1}\frac{y}{x}\\\\ \theta=A[/tex]
⇒The Point (-x,y) lies in Second Quadrant.
[tex]r=\sqrt{x^2+y^2}\\\\ \theta=\tan^{-1}\frac{y}{-x}\\\\ \theta=\pi-A[/tex]
Polar Coordinate of point (-x,y)=(r,π-Ф)
⇒The Point (-2x,-2y) lies in Third Quadrant.
[tex]r=\sqrt{(-2x)^2+(-2y)^2}\\\\r=\sqrt{4x^2+4y^2}\\\\r=2\times \sqrt{x^2+y^2}\\\\ \theta=\tan^{-1}\frac{-2y}{-2x}\\\\=\tan^{-1}\frac{y}{x}\\\\ \theta=\pi+A[/tex]
Polar Coordinate of point (-2x,-2y)=(2r,π+Ф)
⇒The Point (3x,-3y) lies in Fourth Quadrant.
[tex]r=\sqrt{(3x)^2+(-3y)^2}\\\\r=\sqrt{9x^2+9y^2}\\\\r=3\times \sqrt{x^2+y^2}\\\\ \theta=\tan^{-1}\frac{-3y}{3x}\\\\=\tan^{-1}\frac{-y}{x}\\\\ \theta=-A[/tex]
Polar Coordinate of point (3x,-3y)=(3r,-Ф)
Fran has been struggling with the tasks she has to accomplish over the next few weeks: homework due the next day (Tuesday), a French test that Thursday, an essay due in two weeks, an algebra test next Friday, and a science project the following Monday. To make things worse, she has to plan a surprise party for her best friend's birthday the weekend after next. How should she list her priorities, starting with the most urgent task? Rearrange the list below to build the right sequence.
Step-by-step explanation:
Arrangement according to her priorities are as follow:
1) Finish homework which is due the next day (Tuesday).
2) Prepare for a French test that is due on Thursday.
3) Prepare a science project that is due on the following Monday.
4) Prepare for the algebra test that is on the next friday.
5) Complete her essay that is due in two weeks.
6) Plan a surprise party for her best friend's birthday that is on weekend after next.
(Distribute , then simplify the remaining expression. Final answer must be in standard form) Please help !!
Answer correct for a brainliest and also a thanks ! Don't answer if you don't know it .
when 1600 is increased by 20% and the resulting number is decreased by y% . the answer is 1536
Help please....
35
14
11
1. Which fractions are equivalent to 25/45. Please give two examples.
2. Which describes independent events?
Spinning two fours on a spinner divided into four numbered sections.
Selecting two kings from a standard deck of cards by choosing a card at random, placing it in your pocket, then choosing the second card.
Selecting two green marbles by choosing one from a bag at random, giving the first to a friend, then choosing another.
Selecting the names of two siblings by choosing slips of paper from a hat at random, pinning the selected slip on a bulletin board, and then selecting another.
In how many ways can the letters in the word spoon be arranged?
You have already invested $400 in a stock with an annual return of 11%. How much of an additional $1,200 should be invested at 12% and how much at 6% so that the total return on the entire $1,600 is 9%? (Round each answer to the nearest cent.)
The total return you want is 0.09 * 1600 = $144
Let a be the amount invested at 12% and b be the amount invested at 6%
0.12a + 0.06b = 144 - 44
12a + 6b = 10000
a + b = 1200
Put those 2 equations together and solve for a and b:
12a + 6b = 10000
a + b = 1200
Using elimination, a = $466.67 and b = $733.33
So, out of an additional $1200, invest $466.67 at a rate of 12% and $733.33 at a rate of 6%
To determine how much to invest at 12% and 6% to achieve a total return of 9% on $1,600, set up and solve the equation based on the given information.
Explanation:To calculate how much of the additional $1,200 should be invested at 12% and how much at 6%:
Let x be the amount invested at 12% and 1200-x be the amount invested at 6%.Set up the equation: 0.12x + 0.06(1200-x) = 0.09(1600-400).Solve the equation to find x, which represents the amount to invest at 12%.List 12 spherical objects that would be around the home. Please do not list all balls, soccer ball, basket ball, etc.
24. a) The average height od sunflowers in a field is 64 in. with a standard deviation of 3.5 in. On a piece of paper, draw a normal curve for the distribution, including the values of the horizontal axis at one, two, and three standard deviations from the mean. Describe your drawing in as much detail as possible, and explain how you came up with each of your labels. b) If there are 3,000 plants in the field, approximately how many will be taller than 71 in.? Explain how you got your answer.
The graph is attached and 68 sunflowers will be taller than 71 inches in the field.
Given that:
- Mean (average height) = 64 inches
- Standard deviation = 3.5 inches
Standardizing the height 71 inches using the z-score formula, we have
[tex]\[ z = \frac{{x - \mu}}{{\sigma}} \][/tex]
Substitute the known values into the equation
[tex]\[ z = \frac{{71 - 64}}{{3.5}} \][/tex]
[tex]\[ z = \frac{{7}}{{3.5}} \][/tex]
[tex]\[ z = 2 \][/tex]
Using the standard distribution table, we have
P(z > 2) = 0.02275
To find the number of sunflowers taller than 71 inches:
[tex]\[ 3000 \times 0.02275[/tex]
Evaluate
68
Hence, 68 sunflowers will be taller than 71 inches in the field.
A $15,000, 11 percent, 120-day note, dated Sept. 3, is discounted on Nov. 11. Assuming a bank discount rate of 9 percent, the proceeds would be____________.
1. $15,550.00
2. $15,351.74
3. $15,531.74
4. $15,135.47
To calculate the proceeds from discounting a note, subtract the bank discount from the face value.
Explanation:To calculate the proceeds from discounting a note, we need to use the formula:
Proceeds = Face Value - Bank Discount
First, let's calculate the bank discount using the formula:
Bank Discount = Face Value * Discount Rate * Time
For the given note:
Face Value = $15,000
Discount Rate = 9%
Time = 120 days / 365 days/year (assuming a 365-day year)
Plugging in the values, we get:
Bank Discount = $15,000 * 0.09 * (120/365)
Next, we can calculate the proceeds by subtracting the bank discount from the face value:
Proceeds = $15,000 - Bank Discount
A sports store donates basketballs and soccer balls to the boys and girls club. The ratio of basketballs to soccer balls is 7 : 6. The store donates 24 soccer balls. How many basketballs does the store donate?
Answer:
Step-by-step explanation:
First you have to know that you if you divide 24 by 6 you would have to take 7 multiplied by 4 to get 28
What's the volume of a cube-shaped box with edges 6 centimeters in length? A. 216 cm³ B. 18 cm³ C. 36 cm³ D. 1,296 cm³
Answer:
A. 216
Step-by-step explanation:
This is because the volume of a cube is worked out by doing . being the edge. Therefore, you just have to do (6 × 6 × 6), which is 216.
round off 15.8% to the nearest whole percent
To round 15.8% to the nearest whole percent, we round up due to the digit after the decimal point is 8, resulting in 16%.
To round off 15.8% to the nearest whole percent, we look at the first digit after the decimal point, which is 8. Since this digit is 5 or greater, we round up. Therefore, 15.8% rounded to the nearest whole percent is 16%. This rounding method ensures accuracy in representing percentages, particularly in contexts like statistical analysis, grading, and financial reporting. By rounding to the nearest whole percent, the value becomes more concise and easier to interpret, aiding in clear communication and decision-making processes where precise percentage values are essential for understanding and comparison.
What is 15/20 simplified?
Write the equation in slope-intercept form of the line that has a slope of 6 and contains the point (1, 1). ...?
Let f(x)=x^3-7x^2+25x-39 and let g be the inverse function of f. What is the value of g'(0)? ...?
Jamaal spent x minutes today practicing his guitar and y minutes today on homework. If the total time he spent on both is 45 minutes or more, which inequality best represents his practice time?
a. x + y < 45
b. x + y > 45
c. x + y ≤ 45
d. x + y ≥ 45
Answer:
D on edge 2020 :)
Step-by-step explanation:
F is the midpoint of EG. Find the length of EG , given that the length of FG is 10.9
A. 20.9
B. 21.8
C. 22.8
D. 23
Using the given figure, the square ABCD is transformed to a new location.
The transformation shown is
RO,90°
DO,3
T(x, y) → (x + 5, y + 2)
Answer:
C
Step-by-step explanation:
A number t multiplied by -4 is a least -2/5
The inequality -4t ≥ -2/5, where t is the variable in question, simplifies to t ≤ 1/10, indicating that t must be less than or equal to 0.1. Negative time values are a conceptual tool used in physics to discuss intervals before a chosen start time.
The student's question is about solving an inequality involving a variable t and understanding the concept of negative time. The inequality is given as a number t multiplied by -4 is at least -2/5. Mathematically, this can be written as -4t ≥ -2/5. To solve for t, we can divide both sides by -4 (remembering that dividing by a negative switches the inequality sign), so t ≤ 1/10 or t is less than or equal to 0.1. This condition must hold true for any value of t for the statement to be correct.
The concept of negative time is often used in physics to describe events that occurred before a certain reference point in time. The references to negative time values represent periods before some initial event, similar to counting backward. A negative t value does not imply 'backward' time travel in the literal sense, but rather a point in time before the designated start (t = 0).
Please someone can help me with #13, 15 and 16 Thanks.
The surfaces intersect in a space curve C. Determine the projection of C onto the xy-plane.
The paraboloids x^2+y^2+ z=4 and x^2 +3y^2=z
The projection of the space curve C, resulting from the intersection of the two given paraboloids, onto the xy-plane is the line y=0.
Explanation:The surfaces provided are of the paraboloids x^2 + y^2 + z = 4 and x^2 + 3y^2 = z. We can find the space curve, which is the curve of intersection of these two surfaces, by setting the two equations equal to each other. We would get x^2 + y^2 + z = x^2 + 3y^2 which simplifies to 2y^2 - z = 0. The projection of this space curve C onto the xy-plane would just be the shadow this curve casts on the xy-plane. Thus, we eliminate the z variable and the result would be 2y^2 = 0 -> y = 0 , so, the projection of the curve on the xy-plane is y=0.
Learn more about Projection of Space Curve here:https://brainly.com/question/33392916
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Write an equation that models the sequence 400, 200, 100, 50, ...
A) y = 400(2x)
B) y = 50 (2x)
C) y = 1/2x + 400
D)y = 400(1/2)X-1
Answer:
he answer is D.)y = 400(1/2)X-1
Step-by-step explanation:
Option D is correct, y=400(1/2)ˣ⁻¹ is the equation that models the sequence 400, 200, 100, 50, ..
What is Sequence?Sequence is an enumerated collection of objects in which repetitions are allowed and order matters.
The sequence 400, 200, 100, 50, ... is a geometric sequence with a common ratio of 1/2, since each term is half the previous term.
To write an equation that models this sequence, we can use the general formula for a geometric sequence:
aₙ = a.rⁿ⁻¹
where aₙ is the nth term of the sequence, a is the first term of the sequence, r is the common ratio of the sequence and n is the number of the term we want to find
Since the first term is 400 and the common ratio is 1/2, we have:
a= 400
r = 1/2
aₙ=400(1/2)ˣ⁻¹
y=400(1/2)ˣ⁻¹
Hence, option D is correct, y=400(1/2)ˣ⁻¹ is the equation that models the sequence 400, 200, 100, 50, ..
To learn more on Sequence click:
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Which of the following is the equation of a line parallel to the line y = 4x + 1, passing through the point (5,1)?
A. 4x + y = 19
B. 4x - y = 19
C. 4x + y = -19
D. -4x - y = 19
...?
4x-y=19 is the correct answer for this problem
Which fraction is greater than -5/16
A.)-1/2
B.)-1/4
C.)-3/8
D.)-11/32
Use the vertical line test to determine if the relation {(–6, –2), (–2, 6), (0, 3), (3, 5)} is a function. Explain your response.
Cody is selling chocolate and white chocolate candy bars for a school fundraiser. 30% of the candy bars sold have been white chocolate. If Cody has sold 24 white chocolate candy bars, how many total candy bars has he sold?
Answer: The answer is 80
Step-by-step explanation: because first of all divide 24 by 30% which equals 80 and second I took the USATP Test and got it right
Multiply (2 – 7i)(9 + 5i)
To multiply the complex numbers (2 - 7i) and (9 + 5i), we use the distributive property to get the result of 53 - 53i.
To multiply the complex numbers (2 - 7i) and (9 + 5i), we use the distributive property, also known as the FOIL method in this context (First, Outer, Inner, Last). Applying this method, we get:
First: 2 × 9 = 18
Outer: 2 × 5i = 10i
Inner: (-7i) × 9 = -63i
Last: (-7i) ×5i = -35i²
Recall that i² = -1, so -35i² = -35(-1) = 35. Combine like terms (the real numbers with real numbers, and the imaginary numbers with imaginary numbers):
18 + 35 (real parts) + 10i - 63i (imaginary parts) equals to 53 - 53i.
Thus, the product of (2 - 7i) and (9 + 5i) is 53 - 53i.