k=2
Step-by-step explanation:
since all the base are 10 you use the powers to solve it.
so it would be -3+1+k=-3=-3
Answer:
k = -1
Step-by-step explanation:
I did the test, good luck! :)
Given that \(\frac{|z - 5i|}{|z + 5i|} = 1\) , show that z lies on the x-axis.
The proof that z lies on the x-axis is shown below
How to show that z lies on the x-axis.For z to lie on the x-axis, then the coordinate must be represented as (x, 0)
Given that
\(\frac{|z - 5i|}{|z + 5i|} = 1\)
We start by simplifying the given expression using the definition of the modulus of a complex number:
So, we have
\(\frac{|z - 5i|}{|z + 5i|} = \frac{\sqrt{(x - 0)^2 + (y - 5)^2}}{\sqrt{(x - 0)^2 + (y + 5)^2}} = 1\)
Where
z = x + yi or z = (x, y)
Squaring both sides of the equation above, we obtain:
\(\frac{(x - 0)^2 + (y - 5)^2}{(x - 0)^2 + (y + 5)^2} = 1\)
This gives
\(\frac{x^2 + (y - 5)^2}{x^2 + (y + 5)^2} = 1\)
By comparison, we have
\((y + 5)^2 = (y - 5)^2\)
Set y = 0 to test the equation
So, we have
\((0 + 5)^2 = (0 - 5)^2\)
25 = 25 --- true
The equation is true for y = 0
This means that
z = (x, 0)
Hence, z lies on the x-axis
Read more about complex numbers at
https://brainly.com/question/8847670
#SPJ1
(12 + 5) + 32 × (10 − 5)
Answer: 177
Step-by-step explanation:
The combined SAT scores for the students at a local high school are normally distributed with a mean of 1527 and a standard deviation of 291. The local college includes a minimum score of 1207 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement? P(X > 1207) =
Answer:
Step-by-step explanation:
Let x be the random variable representing the SAT scores for the students at a local high school. Since it is normally distributed and the population mean and population standard deviation are known, we would apply the formula,
z = (x - µ)/σ
Where
x = sample mean
µ = population mean
σ = standard deviation
From the information given,
µ = 1527
σ = 291
the probability to be determined is expressed as P(x > 1207)
P(x > 1207) = 1 - P(x ≤ 1207)
For x < 1208
z = (1207 - 1527)/291 = - 1.1
Looking at the normal distribution table, the probability corresponding to the z score is 0.16
P(x > 1207) = 1 - 0.16 = 0.84
Therefore, the percentage of students from this school earn scores that satisfy the admission requirement is
0.84 × 100 = 84%
(2,15) (-4,-3) in standard form
Answer:
pizza
Step-by-step explanation:
... :D
WILL GIVE BRAINLYEST 100 POINTS!!! !!!!!! A family is building a firepit for their yard that is shaped like a rectangular prism. They would like for the firepit to have a volume of 54.4 ft3. If they already have the length measured at 6.8 feet and the height at 2 feet, what is the width needed to reach the desired volume?
4 feet
6.18 feet
8 feet
40.8 feet
Answer: 4ft
Step-by-step explanation: V= l * w * h
The width needed to reach the desired volume is 4 feet.
What is a prism?A prism is a three-dimensional object.
There are triangular prism and rectangular prism.
We have,
The volume of a rectangular prism is given by the formula V = lwh, where l, w, and h are the length, width, and height, respectively.
We are given that the length is 6.8 feet, the height is 2 feet, and the volume is 54.4 ft3.
We can use these values to find the width as follows:
V = lwh
54.4 = 6.8(w)(2)
54.4 = 13.6w
w = 54.4/13.6
w = 4
Therefore,
The width needed to reach the desired volume is 4 feet.
Learn more about prism here:
https://brainly.com/question/12649592
#SPJ2
If a room has the following dimensions: a width of 16ft, a length of 13ft, and a height of 16ft, and a ball has a diameter of 16 inches. How many balls fit inside the room?
Answer:
https://www.sensorsone.com/length-width-and-height-to-volume-calculator/
Step-by-step explanation:
help me for 50 points
Answer:
I hope it helped U
stay safe stay happy
Answer:
Step-by-step explanation:
Find the length of AB.
The measure of the length of segment AB in the triangle is 20 units.
What is the measure of length AB?The figure in the image is of two similar triangles:
From the image,
For the smaller triangle:
Leg 1 AP = 12
Leg 2 AQ = 8
For the larger triangle:
Leg 1 AC = 12 + 18 = 30
Leg 2 AB = 8 + QB
First, we determine length QB, we take the ratio of the sides of the two triangle since they similar:
Hence:
Leg 1 AP : Leg 2 AQ = Leg 1 AC : Leg 2 AB
12 : 8 = 30 : ( 8 + QB )
12/8 = 30/( 8 + QB )
Solve for QB:
12( 8 + QB ) = 8 × 30
96 + 12QB = 240
12QB = 240 - 96
12QB = 144
QB = 144/12
QB = 12
Now,
Leg 2 AB = 8 + QB
Plug in QB = 12:
Leg 2 AB = 8 + 12
Leg 2 AB = 20
Therefore, AB measure 20 units.
Learn about Midsegment Theorem here: brainly.com/question/30066983
#SPJ1
-7 = p/4
Please help
A dance squad needs at least $800 to buy new dance outfits.
They have saved $350 already.
They are selling tickets to a dance performance for $8 each.
They need to sell x tickets to have enough money to buy the new dance outfits. Which inequality represents this situation?
A
8x+350≤800
B
8x+350≥800
C
8(x+350)≤800
D
8(x+350)≥800
Answer:
B) 8x + 350 ≥ 800
Step-by-step explanation:
A dance squad needs at least $800, this means the inequality sign will be greater than or equal to.
They already have $350, and each ticket is $8.
So,
8x + 350 ≥ 800
what is the property of 3x(5x7)=(3x5)7
The property you are referring to is called the associative property of multiplication. According to this property, when multiplying three numbers, the grouping of the numbers does not affect the result. In other words, you can change the grouping of the factors without changing the product.
In the equation you provided: 3x(5x7) = (3x5)7
The associative property allows us to group the factors in different ways without changing the result. So, whether we multiply 5 and 7 first, or multiply 3 and 5 first, the final product will be the same.
What is the common ratio of the geometric sequence?
Number graph ranging from zero to ten on the x axis and zero to twenty-eight on the y axis. Points are plotted on the graph at (one, eight), (two, twelve), (three, eighteen) and (four, twenty-six point five). The points form a general positive trend.
A geometric series is one in which there is a constant between two successive numbers in the series.
What is geometric progression?When there is a constant between the two successive numbers in the series then it is called a geometric series. In other words, every next term is multiplied by that constant term to form a geometric progression.
The sequence in which every next number is the addition of the constant quantity in the series is termed the arithmetic progression
Suppose the series is given as
2,4,8,16,32,64.........
The common difference is defined as the ratio of the next term to the previous term.
From the above series, the common ratio is calculated as,
Common ratio = 4 / 2
Common ratio = 2
To know more about geometric progression follow
https://brainly.com/question/12006112
#SPJ1
The hole for a support needs to be6 feet deep. It is currently 2 feet 9 inches deep. How much deeper must the hole be. Use the conversion factor 12 inches/ 1 foot
The hοle needs tο be 39 inches deeper.
What is the cοnversiοn factοr?A cοnversiοn factοr is a number used tο change οne set οf units tο anοther, by multiplying οr dividing. When a cοnversiοn is necessary, the apprοpriate cοnversiοn factοr tο an equal value must be used. Fοr example, tο cοnvert inches tο feet, the apprοpriate cοnversiοn value is 12 inches equals 1 fοοt.
The current depth οf the hοle is 2 feet 9 inches, which is the same as 2 + 9/12 = 2.75 feet (since there are 12 inches in 1 fοοt).
Tο find οut hοw much deeper the hοle needs tο be, we need tο subtract the current depth frοm the required depth:
6 feet - 2.75 feet = 3.25 feet
Hοwever, we are asked tο express the answer in inches, sο we need tο cοnvert the 3.25 feet tο inches using the given cοnversiοn factοr:
3.25 feet x 12 inches/1 fοοt = 39 inches
Therefοre, the hοle needs tο be 39 inches deeper.
To learn more about the conversion factor visit:
https://brainly.com/question/97386
#SPJ1
What percent of 160 is 32
Given:
Let x percent of 160 is 32
Let 'x' be the percent
\(\begin{gathered} 32=160\times\frac{x}{100} \\ 32\times\frac{100}{160}=x \\ 2\times10=x \\ x=20 \end{gathered}\)Therefore, 20% of 160 is 32.
i need help please explain
Answer:
-7/4 = 2/5t
x5 x5
-35/4 = 2t
Divide by 2 on both sides
-4 3/8 = T
Answer:
35/8
Step-by-step explanation:
Georgia has 17 songs in her playlist, while Scarlet has 36 songs in her playlist. Which statement correctly compares the number
of songs in the two playlists?
O 17 < 36
O 17 > 36
O 17 = 36
36 < 17
The statement that correctly compares the number of songs on Georgia and Scarlet's playlists are is 17 < 36.
How to know the correct statement?Georgia has 17 songs on her playlist while Scarlet has 36 songs on her playlist.
In the number line, the number 36 comes after the number 17. This means that 36 is greater than 17.
The statement that therefore correctly compares the number of songs in the playlist is:
17 < 36
In conclusion, the statement that correctly compares the songs in the two playlists is 17 < 36.
Find out more on number of songs at https://brainly.com/question/12409383
#SPJ1
Which polynomial function could be represented by the graph below?
Can someone please help ASAP!
The correct answer for this would be: Triangles BCA and DAC are congruent according to the Angle-Side-Angle (ASA) Theorem.
What is a Parallelogram?
A parallelogram is a straightforward quadrilateral with two sets of parallel sides in Euclidean geometry. A parallelogram's facing or opposing sides are of equal length, and its opposing angles are of similar size.
According to the ASA theorem, if the included side of one triangle and its two angles are comparable to the parts of another triangle, then the triangles are said to be congruent.
Check the attached file for the image of this problem.
Read more about parallelogram here:
https://brainly.com/question/3050890
#SPJ1
if a fair coin is flipped 1600 times, what is the probability of getting more than 800 heads? a.: less than 0.01. b.: more than 0.01, but less than 0.05. c.: more than 0.05, but less than 0.10. d.: more than 0.10, but less than 0.25. e.: none of the above solution: e.
E. None of the above solutions
The probability of 800 or more heads out of 1600 tosses of a fair coin falls into none of the specified ranges. To compute exact probabilities, we can use the normal distribution to approximate the binomial distribution of the numbers.
The average number of heads in 1600 flips is 800, with a standard deviation of about 25.8. Using the normal distribution, we can compute the probability of more than 800 tables as follows:
P(X > 800) = 1 - P(X <= 800)
Using a standard regular table or calculator, we find that P(X <= 800) is approximately 0.5. So the probability of getting more than 800 heads is 1 - 0.5 = 0.5 or 50%. Since this is not in any given range, the correct answer is
Read more about probability on brainly.com/question/16763436
#SPJ4
Todd rolled a 12-sided die marked with the numbers 1 to 12. These are his experimental probabilities.
P(odd number) = 18/48
P(greater than 8) = 16/48
P(9) = 12/48
1. Which experimental probability matches the theoretical probability exactly?
2. Which experimental probability is farthest from the theoretical probability?
The experimental probability farthest from the theoretical probability is P(greater than 8). The theoretical probability of rolling a 9 is 1/12 because there is one 9 out of twelve total possible outcomes.
Experimental probability refers to the probability of an event based on data acquired from repeated trials or experiments.
Theoretical probability is the probability of an event occurring based on logical reasoning or prior knowledge. In Todd’s case, he rolled a 12-sided die marked with the numbers 1 to 12.
The probabilities are as follows:P(odd number) = 18/48P(greater than 8) = 16/48P(9) = 12/48To answer the questions:1. Which experimental probability matches the theoretical probability exactly?The theoretical probability of rolling an odd number is 6/12 or 1/2 because there are six odd numbers out of the twelve total possible outcomes.
The experimental probability Todd obtained was 18/48. Simplifying 18/48 to lowest terms gives 3/8, which is equal to 1/2, the theoretical probability.
Therefore, the experimental probability that matches the theoretical probability exactly is P(odd number).2. Which experimental probability is farthest from the theoretical probability? The theoretical probability of rolling a number greater than 8 is 3/12 or 1/4 because there are three numbers greater than 8 out of twelve total possible outcomes.
The experimental probability Todd obtained was 16/48. Simplifying 16/48 to lowest terms gives 1/3, which is not equal to 1/4, the theoretical probability.
The experimental probability Todd obtained was 12/48. Simplifying 12/48 to lowest terms gives 1/4, which is not equal to 1/12, the theoretical probability.
However, the difference between the experimental probability and the theoretical probability for P(9) is smaller than that of P(greater than 8). Therefore, P(greater than 8) is the experimental probability that is farthest from the theoretical probability.
For more such questions on possible outcomes
https://brainly.com/question/30241901
#SPJ8
(X₁ + X₂)²
Find the square.
Show your work
Step-by-step explanation:
\({ \purple{ \tt{(X₁ + X₂)²}}}\)
This above problem is in the form of
\({ \blue{ \tt{ {(a + b)}^{2}}}}\)
where the expanded form of
\({ \blue{ \tt {(a + b)}^{2}}} = { \green{ \bold{ {a}^{2} + {b}^{2} + 2ab}}} \)
then the (X₁ + X₂)² answer will be
\({ \purple{ \tt{(X₁ + X₂)²}}} = { \purple{ \tt{ {X₁}^{2} + {X₂}^{2} + 2X₁X₂}}}\)
Choices:
A: 220 cm squared
B:200 cm squared
C: 240 cm squared
D:120 cm squared
The total surface area of the pyramid is 220 cm squared
How to find the total surface area of the pyramid?The total surface area of the pyramid is the sum of the area of the four triangles and the area of the square. That is:
total surface area of the pyramid = 4*(area of triangle) + area of square
total surface area of the pyramid = 4*(30) + 10²
total surface area of the pyramid = 120 + 100
total surface area of the pyramid = 220 cm²
Learn more about pyramid on:
https://brainly.com/question/18994842
#SPJ1
please please help last text then finals l give brainliest
1. The x - intercepts of the parabola are
x = 2.5 s and x = 7.5 s2. The meaning of the x-intercepts are the plane takes of at x = 2.5 s and lands at x = 7.5 s
3. The vertex of the parabola is at (5, 80).
What is a parabola?A parabola is a curved shape
1. Given the parabola above, to find the x - intercepts, we proceed as follows.
The x-intercepts are the points at which the graph cuts the x-axis.
They are
x = 2.5 s and x = 7.5 s2. The meaning of the x-intercepts in this problem are the points where the plane takes off and lands on the ground.
The plane takes of at x = 2.5 s and lands at x = 7.5 s
3. The vertex is the maximum point on the graph.
So, we see that the vertex is at x = 5 s and y = 80 ft
So, the vertex is at (5, 80).
Learn more about parabola here:
https://brainly.com/question/28094027
#SPJ1
15 clothespins are placed on a clothesline at 2-foot intervals. How far is it from the first clothespin to the last one? (Hint: Draw a Picture)
There are 28 units in total between the first and last clothespin.
What is distance?The resulting displacement may be measured using the distance. It represents the distance between the two places. It may be measured using a variety of units, including meters and centimeters.
The specified parameter is shown as intervals in the query. The phrase can be written as follows:
There are 15 total clothespins.
The distance between clothing pegs is 2 feet.
No, the following is the distance from the initial location to the last one:
0 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 28 units
There are 28 units in total between the first and last clothespin.
To learn more about the distance from the given link:
https://brainly.com/question/23848540
#SPJ9
27 red bikes out of 33 bikes
Which expression is equivalent to 1/3(9x + 12) + 4x + 6?
A: 7x + 18
B7x + 10
C:13x x +6
D:13x + 18
The expression is equivalent to 1/3(9x + 12) + 4x + 6 will be 7x + 10. Then the correct option is B.
What is an equivalent?The equivalent is the expression that is in different forms but is equal to the same value.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ 1/3(9x + 12) + 4x + 6
Simplify the expression, then we have
⇒ 1/3(9x + 12) + 4x + 6
⇒ 3x + 4 + 4x + 6
⇒ 7x + 10
The expression is equivalent to 1/3(9x + 12) + 4x + 6 will be 7x + 10. Then the correct option is B.
More about the equivalent link is given below.
https://brainly.com/question/889935
#SPJ2
Evaluate the expression (21 + 3) · 6 - 9
Answer:
135.
Step-by-step explanation:
(21 + 3) · 6 - 9
*21 + 3 = 24
24 · 6 - 9
**24 · 6 = 144
144 - 9
***144 - 9 = 135
I feed to find the circumference
answer:
131.88 inches
step-by-step explanation:
know the formula: 2πrnow plug in what we have2πr = circumference
2(21)(3.14)
= 131.88
Two rectangles of the same shape have areas of 676 and 3,457 square centimetres. If the shorter side of the larger rectangle is 41 centimetres, what are the dimensions of the smaller one?
The dimensions of the smaller rectangle are 13 centimeters by 52 centimeters.
Let's assume the dimensions of the smaller rectangle are length L and width W (in centimeters).
We know that the area of the smaller rectangle is 676 square centimeters:
L * W = 676 ----(1)
We also know that the larger rectangle has a shorter side of 41 centimeters. Let's say the corresponding longer side of the larger rectangle is H centimeters.
The area of the larger rectangle is 3457 square centimeters:
41 * H = 3457 ----(2)
Our current set of equations contains two unknowns. In order to get the smaller rectangle's dimensions, we can simultaneously solve these equations.
In order to find H, we can use equation (2):
H = 3457 / 41
H ≈ 84.22
Now we can substitute this value of H into equation (1):
L * W = 676
We need to find the dimensions (L and W) that multiply to give 676. We can start by looking for factors of 676.
Factors of 676: 1, 2, 4, 13, 26, 52, 169, 338, 676
By trial and error, we can see that the factors that give a close match to the dimensions of the larger rectangle (41 and 84.22) are 13 and 52:
L = 13
W = 52
Therefore, the smaller rectangle has measurements of 13 by 52 centimetres.
Learn more about area of rectangle on:
https://brainly.com/question/23677609
if 36a=45/b, then ab=
Answer:
\(1.25\)
Step-by-step explanation:
\(let \: a = x \: and \: b = y\)
\(36x = \frac{45}{y} \)
\(36xy = 45\)
\(xy = \frac{45}{36} \)
\(xy = 1.25\)
\(therefore \: ab \: is \: 1.25\)