Answer:
0.388
Step-by-step explanation:
7/9 x 1/2 = 0.388
What is the solution to 4|0.5x - 2.5| = 0?
Answer:
x = 5
Step-by-step explanation:
4|0.5x - 2.5| = 0
|0.5x - 2.5| = 0 / 4
0.5x - 2.5 = 0
0.5x = 2.5
x = 2.5 / 0.5
x = 5
Which formula can be used to find the nth term of a geometric sequence where the fifth term is 1/6 and the common ratio is 1/4?
Answer:
[tex] a_n = 16(\frac{1}{4})^{n - 1} [/tex]
Step-by-step explanation:
Given:
Fifth term of a geometric sequence = [tex] \frac{1}{16} [/tex]
Common ratio (r) = ¼
Required:
Formula for the nth term of the geometric sequence
Solution:
Step 1: find the first term of the sequence
Formula for nth term of a geometric sequence = [tex] ar^{n - 1} [/tex], where:
a = first term
r = common ratio = ¼
Thus, we are given the 5th term to be ¹/16, so n here = 5.
Input all these values into the formula to find a, the first term.
[tex] \frac{1}{16} = a*\frac{1}{4}^{5 - 1} [/tex]
[tex] \frac{1}{16} = a*\frac{1}{4}^{4} [/tex]
[tex] \frac{1}{16} = a*\frac{1}{256} [/tex]
[tex] \frac{1}{16} = \frac{a}{256} [/tex]
Cross multiply
[tex] 1*256 = a*16 [/tex]
Divide both sides by 16
[tex] \frac{256}{16} = \frac{16a}{16} [/tex]
[tex] 16 = a [/tex]
[tex] a = 16 [/tex]
Step 2: input the value of a and r to find the nth term formula of the sequence
nth term = [tex] ar^{n - 1} [/tex]
nth term = [tex] 16*\frac{1}{4}^{n - 1} [/tex]
[tex] a_n = 16(\frac{1}{4})^{n - 1} [/tex]
Math homework help........
find the surface area of a box measuring 4 inches long 3 inches wide and 6 inches tall
4*3
12
12*6
72
hope it help
The surface area of the given box is 108 square inches.
What is the formula for the total surface area of a box?The surface area of a box is the sum of the areas of its six faces. We can find the surface area of the given box by using the formula:
Surface Area = 2lw + 2lh + 2wh
where "l" is the length, "w" is the width, and "h" is the height of the box.
As per the question, we have
l = 3 inches, w = 3 inches, and h = 6 inches
Substituting the given values, we get:
Surface Area = 2(4 x 3) + 2(4 x 6) + 2(3 x 6)
Surface Area = 24 + 48 + 36
Surface Area = 108 square inches
Therefore, the surface area of the given box is 108 square inches.
Learn more about the cuboids here:
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x2+3y=4 solve for x. (someone help asap)
Answer:
Slope= 2.0003.000=1.500
x−intercept=−312=−4
y−intercept= 12/2=6
Hoped I helped
For the following exercises, write the equation of the tangent line in Cartesian coordinates for the given parameter t
x=et ,y=(t-1)2 ,at(1,1)
Answer:
y+2x = 3
Step-by-step explanation:
The formula for finding the equation of a tangent line is expressed using the point slope equation y-y0 = m(x-x0) where:
m is the slope of the line and (x0, y0) is a point on the line.
m = dy/dx = dy/dt ÷ dx/dt
dy/dt = 2(t-1)
dx/dt = e^t
m = 2(t-1)/e^t
If x = e^t, and x = 1
1 = e^t
Taking ln of both sides
ln1 = lne^t
t = ln1
t = 0
Substituting t = 0 into the slope formula:
m = 2(t-1)/e^t
m = 2(0-1)/e^0
m = 2(-1)/1
m = -2/1
m = -2
Substituting the slope m= -2 and the given point (1,1) into the formula for calculating the equation of tangent line we will have;
y-1 = -2(x-1)
y-1 = -2x+2
y+2x = 2+1
y+2x = 3
Hence the equation of the tangent line in Cartesian coordinates for the given parameter t is y+2x = 3
Find the product of -1 + 3i and its conjugate. The answer is a + bi where
The real number a equals
The real number b equals
Answer:
[tex]\huge\boxed{a = 10 \ , \ b = 0}[/tex]
Step-by-step explanation:
Conjugate of -1 + 3i = -1 - 3i
Their Product:
[tex]=(-1+3i)(-1-3i)\\Using \ Formula : (a+b)(a-b) = a^2-b^2\\=(-1)^2 - (3i)^2\\=1 - 9i^2\\We \ know \ that \ i^2 = -1\\=1 - 9(-1)\\=1 + 9\\=10[/tex]
Since the answer is 10, It seems like:
a + bi = 10
So, This means that:
a = 10
b = 0
6x+2=-8+3x+25 whats the answer to x?
Answer:
x = 5
Step-by-step explanation:
To find the value of x make sure to get it on one side
First subtract 3x from each side. This makes the equation now
3x + 2 = -8 + 25
Now see what 25 subtract by 8 is (17)
3x + 2 = 17
Next subtract 2 from both sides
3x = 15
Lastly, divide 15 by 3, making x equal 5
x = 5
Using Euler's relation, derive the following relationships:a. Cosθ=½(e^jθ+e^−jθ)b. Sinθ=½(e^jθ−e(^−jθ)
Answer:
a. cosθ = ¹/₂[e^jθ + e^(-jθ)] b. sinθ = ¹/₂[e^jθ - e^(-jθ)]
Step-by-step explanation:
a.We know that
e^jθ = cosθ + jsinθ and
e^(-jθ) = cosθ - jsinθ
Adding both equations, we have
e^jθ = cosθ + jsinθ
+
e^(-jθ) = cosθ - jsinθ
e^jθ + e^(-jθ) = cosθ + cosθ + jsinθ - jsinθ
Simplifying, we have
e^jθ + e^(-jθ) = 2cosθ
dividing through by 2 we have
cosθ = ¹/₂[e^jθ + e^(-jθ)]
b. We know that
e^jθ = cosθ + jsinθ and
e^(-jθ) = cosθ - jsinθ
Subtracting both equations, we have
e^jθ = cosθ + jsinθ
-
e^(-jθ) = cosθ - jsinθ
e^jθ + e^(-jθ) = cosθ - cosθ + jsinθ - (-jsinθ)
Simplifying, we have
e^jθ - e^(-jθ) = 2jsinθ
dividing through by 2 we have
sinθ = ¹/₂[e^jθ - e^(-jθ)]
prove that n!<n^n for n≥2
Answer:
Step-by-step explanation:
Hello,
We will prove it by induction.
Step 1 - for n=2
2!=2*1=2
2^2=4
and 2 < 4 so this is true for n=2
Step2 - We assume that this is true for k and we have to prove it for k+1.
Induction hypothesis is [tex]k!<k^k[/tex]
[tex](k+1)!=(k+1)k![/tex]
We use the induction hypothesis and we we can write that
[tex](k+1)!=(k+1)k!<(k+1)k^k<=(k+1)(k+1)^k=(k+1)^{k+1}\\\\\text{As }k <= k+1[/tex]
so, we prove it for k+1
Step 3- conclusion
for n >= 2 we just proved that [tex]n!<n^n[/tex]
What is the value of x ?
Answer:
X = 31°Step-by-step explanation:
Given: AC is angle bisector of <BAD.
=> So, <BAC = <CAD
30° = x-1 °
30 +1 = x
31 = x
Then, X = 31
Hope this helps.. Good luck :)
Ana is a hard-working college junior. One Saturday, she decides to work nonstop until she has answered 200 practice problems for her chemistry course. She starts work at 8:00 AM and uses a table to keep track of her progress throughout the day. She notices that as she gets tired, it takes her longer to solve each problem. Time Total Problems Answered 8:00 AM 0 9:00 AM 80 10:00 AM 140 11:00 AM 180 Noon 200 The marginal, or additional, gain from Ana’s second hour of work, from 9:00 AM to 10:00 AM, is ? problems. The marginal gain from Ana’s fourth hour of work, from 11:00 AM to noon, is ? problems. Later, the teaching assistant in Ana’s chemistry course gives her some advice. The teaching assistant says, “Based on past experience, working on 70 problems raises a student’s exam score by about the same amount as reading the textbook for 1 hour.” For simplicity, assume students always cover the same number of pages during each hour they spend reading. Given this information, in order to use her 4 hours of study time to get the best exam score possible, how many hours should she have spent working on problems and how many should she have spent reading? A. 0 hours working on problems, 4 hours reading B. 1 hour working on problems, 3 hours reading C. 3 hours working on problems, 1 hour reading D. 4 hours working on problems, 0 hours reading
Answer:
60 ; 20
B.) 1 hour working on problems, 3 hours reading
Step-by-step explanation:
Given the information :
Time - - - Total problems Answered
8am: - - - - 0
9am: - - - - 80
10am: - - - - 140
11am: - - - - -180
noon: - - - - 200
The marginal, or additional, gain from Ana’s second hour of work, from 9:00 AM to 10:00 AM, is ?
(Total problem answered at 10 a.m - Total problems Answered at 9a.m)
(140 - 80) = 60
The marginal gain from Ana’s fourth hour of work, from 11:00 AM to noon, is ?
(Total problem answered at Noon - Total problems Answered at 11a.m)
(200 - 180) = 20
In other to get the best possible exam score,
Since it is assumed that
Solving 70 problems is equivalent to 1 hour of reading in terms of score improvement
Also, it is assumed that the same number of pages is covered for every hour spent whine reading.
Hence it is only during the first hour, that is (8:00 - 9:00) that she was able to solve above 70 questions (80 - 0). Number of questions solved during subsequent hours were not up to 70, hence it would have been more rewarding if they had been used for reading.
Hence, she should have spent 1 hour working on problems and 3 hours reading
Rewrite this number in appropriate scientific notation of 4,770,000
ANYONEEEE ? I need to help
Answer:
please mark my answer brainliest
Step-by-step explanation:
A.....will be the answer....
PLEAS HELP 2m · 2n would be the same as _____.
4 mn
2 m + n
2 mn
2 m - n
4mn. You are multiplying them all together.
Answer:
4mn
Step-by-step explanation:
you would multiply the 2s then the m and n cant multiply so they would stay beside eachother so it would be 4mn
What is the image of (-7,-2) after a reflection over the y-axis?
Find the value of the test statistic z using zequalsStartFraction ModifyingAbove p with caret minus p Over StartRoot StartFraction pq Over n EndFraction EndRoot EndFraction . Round to three decimal places. The claim is that the proportion of drowning deaths of children attributable to beaches is more than? 0.25, and the sample statistics include n equals 647 drowning deaths of children with? 30% of them attributable to beaches. A. 2.775 B. -2.937 C. 2.937 D. -2.775
Answer:
C. 2.937
Step-by-step explanation:
Given the following :
H0 : p = 0.25
H1 : p > 0.25
Number of observations (n) = 647
p' = 30% = 0.3
SD = sqrt[(p(1 - p) / n)]
1 - p = 1 - 0.25 = 0.75
SD = sqrt[(0.25 * 0.75) / 647]
SD = sqrt[0.0002897]
SD = 0.0170234
Z = (p' - p) / SD
Z = (0.3 - 0.25) / 0.0170234
Z = 0.05 / 0.0170234
Z = 2.9371187 = 2.937
Helppppp meeeeeseseeeseeee
Step-by-step explanation:
Remember: Coplanar definition: In the same plane.
Here, we can see that points G, N, and M make up the intersection of plane K and plane L, so that means our answers are: G, N, and M because we were looking forth e points that are on planes K and L. The other points are not the answer because they are either on only one of the planes or not on any of them at all.
I hope this helps! :)
Answer:
I THINK it is M,N,G they are coplanar and they intersect, hope i helped
for the right triangle shown, which equation is correct?
Answer: A) sin 59° = cos 31°
Step-by-step explanation:
Based on the angle and the sides provided, we can establish that
tan 31° = 17/x
Since no hypotenuse is provided and we cannot solve for it, we can rule out options B, C, and D.
We know that the sum of the angles of a triangle is 180°. In a right triangle, we know that one of the angles is 90°, so the other two angles are complimentary --> sin Ф = cos (90 - Ф).
Therefore, option A is true.
it takes 9 eggs to make 4 omelets how many omoletes can be made with 72 eggs
Answer:
For every 72 eggs, 32 omelets can be made.
Step-by-step explanation:
The ratio for eggs to omelets is 9:4. Or 9/4 in fraction form. (Note that the ratio can be written interchangeable such as 4:9).
The ratio says for every 9 eggs, it makes 4 omelets.
72 can be multiplied by 9. (9*8=72).
If we multiply the "top" and the "bottom" of the ratio by 8/8 (8/8=1. We must multiply this way so the ratio will remain the same when reduced.)
We will get 72:32.
For every 72 eggs, 32 omelets can be made.
Answer:
We use the rule of three !
9 eggs ------------> 4 omoletes
72 eggs -----------> x
So x= (72 eggs × 4 omoletes ) / 9 eggs
We simplify by 《eggs 》 because it is in the numerator and the denominator.
So x=(72×4 omoletes) / 9
x =288 omoletes /9
x = 32 omoletes
So we can made 32 omeletes with 72 eggs !!
Construct a truth table
Answer:
see below
Step-by-step explanation:
The result of the expression is P∨Q, since the P∧¬R term is subsumed by the P term. That is, ..
(P∨Q) ∨ (P∧¬R) = Q ∨ (P ∨ P∧¬R) = Q∨P
What is the range of the following numbers: 12,8,17,12,15,18,30
Answer: 22
Step-by-step explanation: The range is the difference between the greatest number in the data set and the least numbe rin the data set.
In this case, thats 30 - 8 or 22.
Answer:
22
Step-by-step explanation:
30 - 8 = 22
highest number - lowest number
A color printer can print 7 color photos in one minute. How many minutes will it take to print 500 photos? (round if you have to)
The combined (verbal + quantitative reasoning) score on the GRE (Graduate Record Exam) is normally distributed with mean 1049 and standard deviation 189. Suppose n = 16 randomly selected students take the GRE on the same day.
a. What is the probability that one randomly selected student scores above 1100 on the GRE?
b. Describe the sampling distribution of the sample mean for the 16 students (description should include mean, standard deviation and shape).
c. What is the probability that a random sample of 16 students has a mean GRE score that is less than 1100?
d. What is the probability that a random sample of 16 students has a mean score that is more than 1100?
e. If the sample size in (d) above was increased to 64, what affect would it have on the probability (more, less, the same, can't tell) and why?
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Normal distribution :
Mean (m) = 1049
Standard deviation (sd) = 189
Number of samples (n) = 16
A) What is the probability that one randomly selected student scores above 1100 on the GRE?
Obtain the z score
Zscore = (x - m) / sd
Zscore = (1100 - 1049) / 189
Zscore = 51 / 189 = 0.2698412 = 0.27
Using the z-table
P(X > 100) = 1 - P(X < 100) = 1 - 0.6064 = 0.3936
B) The sample mean = population mean
Hence sample mean = 1049
The sample standard deviation = standard error
Standard Error (SE) = sd / sqrt(n)
SE = 189/4 = 47.25
Hence shape = normal, standard deviation = 47.25, mean = 1049
C.) P(X < 1100)
Zscore = (x - m) / SE
Zscore = (1100 - 1049) / 47.25
Zscore = 51 / 47.25 = 1.0793650 = 1.08
Using the z-table :
P(X < 1100) = 0.8599
D.) P(X > 1100)
Zscore = (x - m) / SE
Zscore = (1100 - 1049) / 47.25
Zscore = 51 / 47.25 = 1.0793650 = 1.08
Using the z-table :
P(X > 1100) = 1 - P(X < 1100) = (1 - 0.8599) = 0.1401
E) if n = 64
SE = 189 / sqrt(64) = 189 / 8 = 23.625
P(X > 1100)
Zscore = (x - m) / SE
Zscore = (1100 - 1049) / 23.625
Zscore = 51 / 47.25 = 2.1587301 = 2.16
Using the z-table :
P(X > 1100) = 1 - P(X < 1100) = (1 - 0.9846) = 0.0154
The probability decreases as the same distribution hinges towards a Boal distribution with increasing sample size.
A patient A receives 3 times the amount of medicine as patient B. The two doses add to 200 milligrams. What amount of medicine does each patient receive?
Answer:
Patient A receives 150 milligrams and Patient B receives 50 milligrams
Step-by-step explanation:
Patient A = 3x
Patient B = x
200 milligrams = 3x + x
200 milligrams = 4x
x = 50
Patient A = 3(50) = 150
Patient B = 50
I hope this helps!
-TheBusinessMan
Let the medicine received by patient B be x.
According to the question patient A receives 3 times as much,
So patient A receives 3x.The total amount of medicine administered to the two patients equals to 200 milligrams.
We can write the relation as ,
[tex]:\implies \sf \ \ \ x + 3x = 200 \\ \\ \\ [/tex]
[tex]:\implies \sf \ \ \ 4x = 200 \\ \\ \\ [/tex]
[tex]:\implies \sf \ \ \ x = \dfrac{200}{4} \\ \\ \\ [/tex]
[tex]:\implies \sf \ \ \ { \underline{ \boxed{ \bf{ \blue{x = 50}}}}} \ \bigstar \\ \\ [/tex]
Therefore,
Patient B receives 50 milligrams.Patient A receives 3 × 50 = 150 milligrams━━━━━━━━━━━━━━━━━Determine the minimum and maximum cycle times in seconds for a desired output of 500 units in a seven-hour day.
Complete question:
Please find the attached file for task table
Answer:
The minimum cycle time is 50 s
The maximum cycle time is 50.4 s
Step-by-step explanation:
Given;
production time, t = 7 hours
desired output = demand, D = 500 units
The minimum cycle Time is given by;
Minimum cycle time = maximum task time, from the table the maximum task time is 50 seconds.
Thus, Minimum cycle time = 50 s
The maximum cycle Time is given by;
[tex]CT = \frac{Production \ time}{D} \\\\CT = \frac{7*3600 s}{500 \ units} \\\\CT = 50.4 \ s[/tex]
Thus, Maximum cycle time = 50.4 s
Convert 60 miles pr hour to yards pr minute
Answer:1760
Step-by-step explanation:
0.4 is one tenth of what number
Answer:
.4 is in the 10th place in a number so .4 is one tenth of 1
The given decimal is equivalent to the one tenth of 4.
What is a Decimal number?A decimal number is the representation of a number in whole and a part. The whole is represented by an integer while the part is equivalent to a number divided by the order of 10.
The given number in decimal form is 0.4.
In order to convert it in fraction, it can be written in the form of p/q as follows,
0.4 = 0.4/1
Multiply the numerator and denominator by 10 to obtain,
(0.4 × 10)/(1 × 10) = 4/10
Hence, the given number is one tenth of 4.
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Find two decimals that are equivalent to (4×10)+(7×1\100
(4×10)+(7×1\100) = 40+7/100 =4007/100
4007/100= 40,07
40,07 = 40,070
just add 0 to right side
(40,0700 also = 40,070)
Hope this helps ^-^
If there are 140,900 teachers and 12,880,000 people in Illinois, how many teachers would we expect to find in Marshall, IL, a city of 3,860 people?
Answer:
42
Step-by-step explanation:
12880000/140900=94.41
Therefore there is 1 teacher in every 94.41 people so
3860/94.41=42.2
So we would find around 42 teachers in Marshall, IL