Write an addition problem involving i that results in the simplified expression 5-2i
Answer:
-5+2i
Step-by-step explanation:
Which unit measures volume?
A. square inch
B. grams
C. cubic inch
D. meter
Answer:
C. Cubic inches
Answer: C. cubic inch
Step-by-step explanation:
Evaluate the given expression. Subscript 9 Baseline P Subscript 6 a. 60480 c. 60495 b. 60505 d. 60470
Answer:
60480
Step-by-step explanation:
nPx = n! / (n-x)!
Therefore, here, n = 9 and x = 6
Therefore:
9P6 = 9! / (9-6)!
= 9! / 3!
= (9*8*7*6*5*4*3*2*1) / (3*2*1)
= 60480
Hope this helps :)
Answer:
nPx = n! / (n-x)!
Therefore, here, n = 9 and x = 6
Therefore:
9P6 = 9! / (9-6)!
= 9! / 3!
= (9*8*7*6*5*4*3*2*1) / (3*2*1)
= 60480
How do i get 37 is what % of 98!
Answer:
37.76
Step-by-step explanation:
it easssyy i guess
Four buses carrying 100 students from the same school arrive at a football stadium. The busses carry, respectively, 10, 20, 30, and 40 students. One of the student is randomly selected. Let X denote the number of students who were on the bus carrying the randomly selected student. Let Y denote the number of students on the bus when one of the 4 bus drivers is randomly selected.
(a) Explain (without any computation) which of Var(X) or Var(Y ) you think is larger? Why?
(b) Compute E[X] and E[Y].
Answer:
a) Var (x) is larger
b)E(x)= 10 and E(y)= 2.5
Step-by-step explanation:
a) Var (x) is larger because the number of students selected can be greater than 1 but Var(y) will always be less because the numbers of drivers chosen can be only one at a time.
b) The expected value of X and y can be computed by multiplying the numbers with their probabilities
x 10 20 30 40
P(x) 0.1 0.2 0.3 0.4
P (x= 10) = 10/ 10+20+30+40= 10/ 100= 0.1
E(x) = 10(0.1) +20(0.2) +30(0.3)+40(0.4)
E(x)= 1=2+3+4= 10
Now the expected value of y
y 1 2 3 4
P(y) 0.25 0.25 0.25 0.25
E(y)= 1(0.25) +2(0.25) +3(0.25)+4(0.25)
E(y)= 0.25 +0.5 +0.75 +1 = 2.5
Match the equivalent expressions.
7x4−5x4
Answer:
8
Step-by-step explanation:
7*4-5*4
28-20
8
this is your answer
Answer:
I think it is 8
Step-by-step explanation:
33) 90÷18-18÷6-6÷3=
Preciso de ajudaaaa
Answer:
67
Step-by-step explanation:
(90÷18)-(18÷6)-(6÷3)= 72-3-2= 67
A man can row at 9km/h in still water. He rows 1.5km upstream and back again. The stream flows at 3km/h. What is his average speed for the whole trip?
Answer:
8km/h
Step-by-step explanation:
The computation of the average speed is shown below:
In the case of upstream, the speed is
= 9 - 3
= 6km/h
And, the time would be
= 1.5km ÷ 6
= 0.25h
In the case of downstream, the speed is
= 9 + 3
= 12
The time would be
= 1.5km ÷ 12
= 0.125h
Now the average speed is
= 3 ÷ (0.25 + 0.125)
= 8km/h
The original cost of the game is $40. The new cost of $18. Find the percent change to the nearest
percent.
Answer: 45
Step-by-step explanation: To find the percentage change you need to divide the new cost by the original cost. We then multiply that answer by 100. So in this case we’d divide 18 (the new cost) by 40 (the original cost) to get 0.45. We then multiply 0.45 by 100 to get 45.
2x-7/4=X+3/3
solve this
2x - 7/4 = x + 1
-7/4 = -x + 1
-7 = -4x + 4
4x = 11
x = 11/4
Find 9.24 divided by 6
Answer:
1.54
Step-by-step explanation:
a calculator provides the precise answer efforessly
help with geometry
ddddddddddd
Does the input value x = -7 have a real
output in the function
f(x) = -√ x + 11 – 3?
The function [tex]f(x) = -\sqrt{(x + 11 - 3)}[/tex], evaluated at x = -7 has a real output, which is -1.
Given is a function [tex]f(x) = -\sqrt{(x + 11 - 3)}[/tex], we need to check if x = -7, gives a real output or not,
Let's evaluate the function f(x) = -√(x + 11 - 3) at x = -7 and determine if it has a real output.
Plugging in x = -7 into the function, we get:
[tex]f(-7) = -\sqrt{(-7 + 11 - 3)}[/tex]
Simplifying further:
f(-7) = -√(1)
The square root of 1 is 1, so:
f(-7) = -1
Therefore, the function [tex]f(x) = -\sqrt{(x + 11 - 3)}[/tex], evaluated at x = -7 has a real output, which is -1.
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What is the asymptote of this function?
A. X= 3
B. Y= 3
C. X= 4
D. Y= 4
[tex] \huge \sf \pink{Answer}[/tex]
D. Y=4
[tex] \huge \sf \pink{Reason}[/tex]
Because it is situated on the upper axis,which we called Y-axis.If we count the sequence then the line was on number. 4.
Hence,the answer is number 4.[tex] \huge \sf \pink{Verification}[/tex]
For verification we mark a point on that line and count the sequence.We will find that it is on 4.
Hence,Verified✔️Note:For verification u can see attachment6) A spinner is
divided into 5 sections
lettered A to E. Lena
spins the pointer on
the spinner 25 times.
She records her
results in the table.
Based on these results,
lands on the letter B?
B is 5
Answer:
1/5
Step-by-step explanation:
there are 5 sections regardless of how many time she rolls it ti does not change the probability of landing on b so it's 1/5
If you place a 36-foot ladder against the top of a building and the bottom of the ladder is 32 feet from the bottom of the building, how tall is the building? Round to the nearest tenth of a foot.
Answer:
16.5
Step-by-step explanation:
36^2-32^2 =272
sqrt272 =16.5
The height of the building is approximately 16.5 feet.
What is the Pythagoras theorem?The Pythagoras theorem which is also referred to as the Pythagorean theorem explains the relationship between the three sides of a right-angled triangle. According to the Pythagoras theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides of a triangle.
Given that, place a 36-foot ladder against the top of a building and the bottom of the ladder is 32 feet from the bottom of the building.
So, hypotenuse of the triangle is 36 feet and base of the triangle is 32 feet.
Let h be the height of the building.
Now, 36²=32²+h²
1296=1024+h²
h²=1296-1024
h²=272
h=16.5 feet
Therefore, the height of the building is approximately 16.6 feet.
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if the nth term of a number sequence is n2-5, find the first 3 terms and the 10th term
9514 1404 393
Answer:
-4, -1, 495Step-by-step explanation:
Use n = {1, 2, 3, 10}.
n^2 -5 = {1, 2, 3, 10}^2 -5 = {1, 4, 9, 100} -5 = {-4, -1, 4, 95}
The first three terms are -4, -1, 4.
The 10th term is 95.
The box plot below shows the total amount of time, in minutes, the students of a class surf the Internet every day:
A box plot is shown. The left-most point on the plot is 20 and the right-most point is 95. The box is labeled 40 on the left edge and 60 on the right edge. A vertical line is drawn inside the rectangle at the point 50.
Part A: List two pieces of information that are provided by the graph and one piece of information that is not provided by the graph. (4 points)
Part B: Calculate the interquartile range of the data, and explain in a sentence or two what it represents. (4 points)
Part C: Explain what affect, if any, there will be if an outlier is present. (2 points)
(you will be reported if u put a random answer or a non-related answer :) )
The table shows the participation in a school's debate club during the last four years.
Year 1 2 3 4
Students
14
19
25
33
Between which two years did the club see the greatest growth? By what percent did it grow?
The greatest growth was between years 3 and 4. The growth between those years was about 32%.
The greatest growth was between years 1 and 2. The growth between those years was about 5%,
The greatest growth was between years 3 and 4. The growth between those years was about 8%.
The greatest growth was between years 1 and 2. The growth between those years was about 36%.
Which number when multiplied by 3 will result in a number smaller than 3?
A) 1.99 B) 1.5 C) 9/11 D) 1.002
Answer:
c bc c is a fraction which is smaller than a #
the question is asking me what’s the slope and is giving me 4 options and it’s very difficult
Answer:
y=8x
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(80-0)/(10-0)
=80/10
=8
if my life is going to mean anything i have to live it myself
what do you think this quote means.
Answer:
To live your life your own way?
Step-by-step explanation:
HELP PLEASE!
A rectangular picture is twice as long as it is wide. If the
area of the picture is 288 in^2, what are its dimensions?
The dimensions of the picture are_____ in long by_____ in wide.
Answer:
24 in long by 12 in wide.
Step-by-step explanation:
l=2w
288=(2w)×w
288=2w^2
144=w^2
12=w
use w=12 to solve for l
l=2(12)
l=24
please help find the central angle and perimeter !
Step-by-step explanation:
We will have the following
*First: We have that the area of a sector of a circle is given by the expression:
A = r²a/2
Here r is the radius and alpha is the central angle.
*Second: We determine the central angle as follows:
[tex]36\pi =[/tex]
(12)²a/2 ➡️ a = 36í•2/(12) ²➡️
[tex]a = \frac{1}{2} \pi[/tex]
So, the central angle has a measurement of 1/2 pi.
Third: We determine the perimeter of the sector as follows:
First: we determine the arc length with two times the radius, that is:
p = 2(12) +
[tex]6\pi[/tex]
➡️ p = 24 +
[tex]6\pi[/tex]
So, the perimeter of the sector is 24+ 6pi meters [ Approximately 43 meters].
Ashraf takes 1500 steps to walk d metres from his home to the station.
Each step is 90 centimetres correct to the nearest 10 cm.
Find the lower bound and the upper bound for d.
Answer:
lower bound = 90 - 10 = 80 cm
upper bound = 90 + 10 = 100 cm
lower bound d = 1500 x 80 cm = 120,000 cm
upper bound d = 1500 x 100 cm = 150,000 cm
Distance of upper bond and lower bond is 120,000 and 150,000 centimeter
Given:
Number of steps walk = 1500 steps
Each step count = 90 centimetres
Correction in each step = 10 cm nearset
Find:
Lower bound and upper bound for d
Computation:
Lower bound step length = 90 - 10
Lower bound step length = 80 centimetres
Upper bound step length = 90 + 10
Upper bound step length = 100 centimetres
Lower bound d = 1500 × 80
Lower bound d = 120,000 centimetres
Upper bound d = 1500 × 100
Upper bound d = 150,000 centimetres
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log3(x)=4.5 and log3(y)=3 then what is log3(x^2/y)?
Answer:
6
Step-by-step explanation:
So it is easier on me let's pretend each logarithm I write is base 3.
log(x^2/y)
Quotient rule
log(x^2)-log(y)
Power rule
2log(x)-log(y)
Substitute the given
2*4.5-3
9-3
6
The measure of an angle is 18°. What is the measure of its supplementary angle?
Answer:
162
Step-by-step explanation:
180 - 18 = 162
A supplementary angle equals 180 degrees
Answer:
72 degrees
Step-by-step explanation:
Supplementary angles are angles that when added together make a right angle, or 90 degrees. So 90-18=72.
Hope this helps!!
Can you help me with this question please?
Answer:
11.
Step-by-step explanation:
[tex] \cos(42) = x \div 15[/tex]
[tex]15 \cos(42) = x[/tex]
x=11.147
Answer:
11
Step-by-step explanation:
cos(42)=x÷15
15 \cos(42) = x15cos(42)=x
x=11.147
If the ordered pair (42, y) describes a point on the line, what is the value of y?
Answer:
13
Step-by-step explanation:
slope= 1/3
AJDSH hope this helped ;,333
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: Y=13
Explanation:
First find the slope, 1/3
Then do subsitute it into the equation
Y= 1/3(42) - 1
Y = 13
I hope this helped!
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- Zack Slocum
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Answer this to get 20 points!
What is 10x(5+7) divided by 2
(Real easy)
Answer:
I think it is 60x I may be wrong
Step-by-step explanation:
Just followed order of operations then did the math.
Answer: x=60
Step-by-step explanation: 5+7=12x10=120/2=60