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problem-solver
Recent questions tagged problem-solver
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Tourists returning home were interviewed about which countries they had visited on their trip abroad. Of the 270tourists interviewed, all of them had visited at least one of Fiji, Slovenia, or Peru, while exactly 25 had visited all three.
Tourists returning home were interviewed about which countries they had visited on their trip abroad. Of the 270tourists interviewed, all of them had visited at least one...
MathsGee
Platinum
113k
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MathsGee
asked
Feb 2
Mathematics
math
problem-solver
solve
solution
mathematics
difference
+
–
100
views
1
answers
Develop a mathematical model for the mixing process. Let \( Q \) represent the amount of dye in kilograms in the mixture.
(a) Develop a mathematical model for the mixing process. Let \( Q \) represent the amount of dye in kilograms in the mixture.Answer:\[\frac{d Q}{d t}=0.5 \mathrm{r}-((10+...
Shri9999
Wooden Status
190
points
Shri9999
asked
Feb 1
Mathematics
math
problem-solver
solution
solve
mathematics
+
–
134
views
1
answers
A disc \( 30 \mathrm{~cm} \) in diameter and \( 10 \mathrm{~cm} \) thick, initially at uniform temperature of \( 265 \backslash \mathrm{deg} C \) is immersed inliquid at \( -15 \backslash \operatorname{deg} C \). The convective heat - transfer coefficients on ends and on side are 340 and \( 1420 \mathrm{~W} / \mathrm{m} \) ? . K, respectively. Determine (a) temperature at centre of disc, (b) temperature on surface atcentre of one end, (c) temperature at \( 4 \mathrm{~cm} \) away from one of its flat faces and at radius \( 10 \mathrm{~cm} \), and (d)heat transfer rate, after 5 mins? \( \mathrm{p}=7854 \mathrm{~kg} / \mathrm{m} \backslash \mathrm{deg}, \mathrm{Cp} \) \( =487 \mathrm{~J} / \mathrm{kg} \cdot \mathrm{K}, \mathrm{a}=14.82 \backslash \) times \( 10-6 \mathrm{~m} ? / \mathrm{s} \)
A disc \( 30 \mathrm{~cm} \) in diameter and \( 10 \mathrm{~cm} \) thick, initially at uniform temperature of \( 265 \backslash \mathrm{deg} C \) is immersed inliquid at ...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 30
Electrical Engineering
solve
calculate
problem-solving
problem-solver
+
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116
views
0
answers
The Fitzhugh-Nagumo model for the electrical impulse in a neuron states that, in the absence of relaxation effects, the electrical potential in a neuron
5. [-/3 Points] V = DETAILS The Fitzhugh-Nagumo model for the electrical impulse in a neuron states that, in the absence of relaxation effects, the electrical potential i...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 29
Mathematics
solution
solve
math
mathematics
problem-solver
+
–
109
views
1
answers
Tourists returning home were interviewed about which countries they had visited on their trip abroad. Of the 340 tourists interviewed, all of them had visited at least one of Fiji, Togo, or Nepal, while exactly 50 had visited all three. 155 tourists had not travelled to Fiji and 175 had visited Nepal. Additionally, 210 of them had been to Togo. The interviews also revealed that 15 tourists had been to Nepal only. If we also know that 45 had travelled to Fiji and Nepal but not to Togo, then how many people had visited Togo only?
Tourists returning home were interviewed about which countries they had visited on their trip abroad. Of the 340 tourists interviewed, all of them had visited at least on...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 26
Mathematics
math
solve
mathematics
solution
problem-solver
+
–
83
views
0
answers
A cellular phone company monitors monthly phone usage. The following data represent the monthly phone use in minutes of one particular customer for the past 20 months.
A cellular phone company monitors monthly phone usage. The following datarepresent the monthly phone use in minutes of one particular customer for thepast 20 months. Use ...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 24
Mathematics
math
solve
statistics
statistic
problem-solver
solution
+
–
157
views
1
answers
A centrifugal fan has to deliver 5.0m^3/s of air when running at 1000 revs/min. the diameter of the impeller at inlet is 0.6m and at outlet is 0.8m. it may be assumed that the air enters the fan radially.
A centrifugal fan has to deliver 5.0m^3/s of air when running at 1000 revs/min. the diameter of the impeller at inlet is 0.6m and at outlet is 0.8m. it may be assumed tha...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 24
Chemical Engineering
solution
solve
problem-solver
equation
water
+
–
93
views
0
answers
PharmaPlus operates a chain of 30 pharmacies. The pharmacies are staffed by licensed pharmacists and pharmacy technicians.
PharmaPlus operates a chain of 30 pharmacies. The pharmacies are staffed by licensed pharmacists and pharmacy technicians. The company currently employs 85 full-time equi...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 23
Mathematics
math
mathematics
problem-solver
solution
solve
+
–
170
views
1
answers
A sphere of radius \( a \) has its centre at the origin. The charge per unit area on the sphere is given by \( \sigma=x^{2}+2 y^{2} \). Use surface integration to find the total charge on the sphere.
A sphere of radius \( a \) has its centre at the origin. The charge per unit area on the sphere is given by \( \sigma=x^{2}+2 y^{2} \). Use surface integration to find th...
Shri9999
Wooden Status
190
points
Shri9999
asked
Jan 22
Mathematics
math
surface
integration
surface-integration
integral
problem-solver
solve
+
–
558
views
1
answers
how many four-digit numbers contain the digit 5 or 7 (or both) theorem
how many four-digit numbers contain the digit 5 or 7 (or both) theorem
MathsGee
Platinum
113k
points
MathsGee
asked
May 14, 2023
Mathematics
math
try
questions
answers
problem-solver
equations
+
–
780
views
1
answers
How many times greater is the value of the digit 5 in 583,607 than the value of the digit 5 in 362,501?
How many times greater is the value of the digit 5 in 583,607 than the value of the digit 5 in 362,501?
MathsGee
Platinum
113k
points
MathsGee
asked
Nov 29, 2022
Mathematics
math
equations
problem-solver
answers
digits
questions
try
+
–
578
views
1
answers
How many \(n\)-digit natural numbers are there that do not contain the digits \(0,1,2\), but contain the digits \(3,4,5\) ?
How many \(n\)-digit natural numbers are there that do not contain the digits \(0,1,2\), but contain the digits \(3,4,5\) ?
MathsGee
Platinum
113k
points
MathsGee
asked
Nov 27, 2022
AI & Data Science
math
questions
answers
try
equations
problem-solver
numbers
+
–
301
views
1
answers
Eva, Per, and Anna randomly select different nine-digit integers made of digits \(1,2, \ldots, 9\) and check if they are divisible by 11 . Anna claims that the probability that the number is divisible by 11 is exactly \(1 / 11\);
Eva, Per, and Anna randomly select different nine-digit integers made of digits \(1,2, \ldots, 9\) and check if they are divisible by 11 . Anna claims that the probabilit...
MathsGee
Platinum
113k
points
MathsGee
asked
Sep 22, 2022
Mathematics
digits
math
questions
equations
answers
problem-solver
try
+
–
413
views
0
answers
Define the last two digits of the number
Define the last two digits of the number\[2^5+2^{5^2}+2^{5^3}+\cdots+2^{5^{1991}}\]when this number is written in a decimal system.
MathsGee
Platinum
113k
points
MathsGee
asked
Sep 22, 2022
Mathematics
digits
math
equations
questions
try
answers
problem-solver
+
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410
views
0
answers
Define the last two digits of the number \[ 2^5+2^{5^2}+2^{5^3}+\cdots+2^{5^{1991}} \] when this number is written in a decimal system.
Define the last two digits of the number\[2^5+2^{5^2}+2^{5^3}+\cdots+2^{5^{1991}}\]when this number is written in a decimal system.
MathsGee
Platinum
113k
points
MathsGee
asked
Sep 22, 2022
Mathematics
math
equations
questions
try
answers
problem-solver
digits
+
–
136
views
0
answers
Is \(4 \sqrt{4-2 \sqrt{3}}+\sqrt{97-56 \sqrt{3}}\) an integer?
Is \(4 \sqrt{4-2 \sqrt{3}}+\sqrt{97-56 \sqrt{3}}\) an integer?
MathsGee
Platinum
113k
points
MathsGee
asked
Sep 22, 2022
Mathematics
numbers
solution
equations
answers
questions
problem-solver
try
+
–
797
views
1
answers
A 4 digit number when squared, the last 4 digits of the square are same as that of the original number. Find the sum of digits of this number.
A 4 digit number when squared, the last 4 digits of the square are same as that of the original number. Find the sum of digits of this number.
AstraNova
Diamond
68.1k
points
AstraNova
asked
Aug 16, 2022
Mathematics
math
questions
try
answers
equations
problem-solver
digits
+
–
605
views
0
answers
What 4-digit number keeps the same last 4 digits when it is squared?
What 4-digit number keeps the same last 4 digits when it is squared?
MathsGee
Platinum
113k
points
MathsGee
asked
Aug 7, 2022
Mathematics
digits
math
questions
try
answers
equations
problem-solver
+
–
513
views
1
answers
A five digit number is formed by the digits \(1,2,3,4,5\) without repetition. Find the probability that the number formed is divisible by 4 .
A five digit number is formed by the digits \(1,2,3,4,5\) without repetition. Find the probability that the number formed is divisible by 4 .
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 28, 2022
AI & Data Science
digits
math
questions
try
answers
equations
problem-solver
+
–
535
views
1
answers
If 4-digits numbers greater than 5000 are randomly formed from the digits \(0,1,3,5\) and 7 what is the probability of forming a number divisible by 5 when,
If 4-digits numbers greater than 5000 are randomly formed from the digits \(0,1,3,5\) and 7 what is the probability of forming a number divisible by 5 when,(i) the digits...
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 28, 2022
AI & Data Science
digits
math
questions
answers
problem-solver
equations
try
+
–
726
views
1
answers
A class consists of 15 boys of whom 5 are prefects. How many committees of 8 can be formed if each consists of
A class consists of 15 boys of whom 5 are prefects. How many committees of 8 can be formed if each consists of (a) exactly 2 prefects?(b) at least 2 prefects?
AstraNova
Diamond
68.1k
points
AstraNova
asked
Jul 22, 2022
AI & Data Science
math
equations
questions
problem-solver
try
answers
combinations
+
–
824
views
1
answers
How many numbers greater than 1000 can be formed with the digits \(3,4,6,8,9\) if a digit cannot occur more than once in a number?
How many numbers greater than 1000 can be formed with the digits \(3,4,6,8,9\) if a digit cannot occur more than once in a number?
AstraNova
Diamond
68.1k
points
AstraNova
asked
Jul 22, 2022
AI & Data Science
math
questions
equations
problem-solver
try
answers
digits
+
–
950
views
1
answers
How many of the six integers 1 through 6 are divisors of the four-digit number 1452?
How many of the six integers 1 through 6 are divisors of the four-digit number 1452?
AstraNova
Diamond
68.1k
points
AstraNova
asked
Jul 8, 2022
Mathematics
digits
try
equations
math
problem-solver
questions
answers
+
–
397
views
1
answers
What is the nearest integer to \((5+2 \sqrt{7})^{4}\) ?
What is the nearest integer to \((5+2 \sqrt{7})^{4}\) ?
AstraNova
Diamond
68.1k
points
AstraNova
asked
Jul 8, 2022
AI & Data Science
numbers
equations
solution
answers
questions
try
problem-solver
+
–
309
views
1
answers
A number is doubled, then decreased by \(13.7\). The result is greater than \(125.28\). What is the smallest integer that satisfies this condition?
A number is doubled, then decreased by \(13.7\). The result is greater than \(125.28\). What is the smallest integer that satisfies this condition?
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 7, 2022
Mathematics
try
math
equations
problem-solver
answers
questions
function
+
–
463
views
1
answers
What is the \(1000^{\text {th }}\) positive integer with an odd number of digits?
What is the \(1000^{\text {th }}\) positive integer with an odd number of digits?
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 7, 2022
Mathematics
math
equations
answers
questions
try
problem-solver
digits
+
–
1.2k
views
1
answers
How many times does the digit 6 appear in the list of all integers from 1 to 100?
How many times does the digit 6 appear in the list of all integers from 1 to 100?
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 7, 2022
Mathematics
digits
equations
answers
questions
try
problem-solver
math
+
–
750
views
1
answers
Given the four digits \(2,4,6\), and 7 , how many different positive two-digit integers can be formed using these digits if a digit can be repeated in an integer?
Given the four digits \(2,4,6\), and 7 , how many different positive two-digit integers can be formed using these digits if a digit can be repeated in an integer?
MathsGee
Platinum
113k
points
MathsGee
asked
Jul 7, 2022
Mathematics
equations
questions
math
problem-solver
try
answers
digits
+
–
222
views
1
answers
Solve for \(x\) in \(\frac{3 x-2}{2}=x+1\)
Solve for \(x\) in \(\frac{3 x-2}{2}=x+1\)
MathsGee
Platinum
113k
points
MathsGee
asked
Jun 23, 2022
Mathematics
problem-solver
solve
quadratic
value
following
+
–
461
views
1
answers
If a number cannot be immediately repeated, how many different three number combinations are possible for a combination lock with numbers \(0,1, \ldots, 29\).
If a number cannot be immediately repeated, how many different three number combinations are possible for a combination lock with numbers \(0,1, \ldots, 29\).
AstraNova
Diamond
68.1k
points
AstraNova
asked
Jun 17, 2022
AI & Data Science
math
try
equations
problem-solver
answers
questions
combinations
+
–
912
views
0
answers
Half of a certain number is 3 more than the number.
Half of a certain number is 3 more than the number.
AstraNova
Diamond
68.1k
points
AstraNova
asked
Mar 8, 2022
Mathematics
math
try
answers
problem-solver
questions
answer
+
–
236
views
0
answers
11 is added to 5 times a number the result is 39 less than square of the number what is the number?
assume the number is x when finding the final number, how to work through the problem.
Mom helper
Mom helper
asked
Mar 2, 2022
Mathematics
math
problem-solver
answers
question
calculate
equations
formula
+
–
520
views
1
answers
The first three terms of a sequence are $p+1 ; 2 p+2 ; 4 p$. Calculate the value of $\mathrm{p}$ and the first three terms of the sequence.
The first three terms of a sequence are $p+1 ; 2 p+2 ; 4 p$. Calculate the value of $\mathrm{p}$ and the first three terms of the sequence.
Siyavula
Wooden Status
4.3k
points
Siyavula
asked
Aug 28, 2021
Mathematics
calculate
questions
equations
math
answers
try
problem-solver
+
–
770
views
0
answers
The number $2^{-100}$ is written as a decimal. What is the sum of the first 30 digits after the decimal point?
The number $2^{-100}$ is written as a decimal. What is the sum of the first 30 digits after the decimal point?
MathsGee
Platinum
113k
points
MathsGee
asked
Jun 26, 2021
Mathematics
numbers
questions
equations
math
answers
try
problem-solver
+
–
2.2k
views
1
answers
How many three digit numbers are there whose first digit equals the sum of the second and third digits?
How many three digit numbers are there whose first digit equals the sum of the second and third digits?
MathsGee
Platinum
113k
points
MathsGee
asked
Jun 16, 2021
Mathematics
numbers
try
questions
equations
answers
math
problem-solver
+
–
2.8k
views
1
answers
Three four-digit numbers are written on cards. Cards are in position as is shown in the image. The sum of those three numbers is $10,126 .$ Which digits are covered?
Three four-digit numbers are written on cards. Cards are in position as is shown in the image. The sum of those three numbers is $10,126 .$ Which digits are covered?
MathsGee
Platinum
113k
points
MathsGee
asked
Jun 16, 2021
Mathematics
numbers
math
try
questions
answers
equations
problem-solver
+
–
1.3k
views
1
answers
How many three-digit numbers have the first digit equal to the sum of the other two digits?
How many three-digit numbers have the first digit equal to the sum of the other two digits?
MathsGee
Platinum
113k
points
MathsGee
asked
Jun 16, 2021
Mathematics
try
equations
math
questions
answers
problem-solver
numbers
+
–
2.0k
views
1
answers
How many two digit numbers contain either a 5 or a 6 (or both)?
How many two digit numbers contain either a 5 or a 6 (or both)?
MathsGee
Platinum
113k
points
MathsGee
asked
May 12, 2021
Mathematics
try
math
questions
answers
problem-solver
equations
question
+
–
809
views
1
answers
how many whole numbers less than 500 have seven as the sum of their digits?
how many whole numbers less than 500 have seven as the sum of their digits?
anonymous
anonymous
asked
Mar 17, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
533
views
1
answers
when twice a number is decreased by 8, the result is the number increased by 7. find the number?
when twice a number is decreased by 8, the result is the number increased by 7. find the number?
anonymous
anonymous
asked
Mar 11, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
1.4k
views
1
answers
five times the sum of a number and eight is twenty-five. find the number.
five times the sum of a number and eight is twenty-five. find the number.
anonymous
anonymous
asked
Mar 9, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
328
views
0
answers
square root six over square root 7 multiplied by square root 14 over square root 3.
square root six over square root 7 multiplied by square root 14 over square root 3.
anonymous
anonymous
asked
Feb 21, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
757
views
1
answers
the sum of two times a number and eight is equal to three times the difference between the number and four. what's the number?
the sum of two times a number and eight is equal to three times the difference between the number and four. what's the number?
anonymous
anonymous
asked
Feb 18, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
713
views
1
answers
what number minus one-half is equal to negative one-half ?
what number minus one-half is equal to negative one-half ?
anonymous
anonymous
asked
Jan 17, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
1.0k
views
1
answers
the sum of 2/3 and four times a number is equal to 5/6 subtracted from five times the number. find the number.
the sum of 2/3 and four times a number is equal to 5/6 subtracted from five times the number. find the number.
anonymous
anonymous
asked
Jan 4, 2021
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
369
views
1
answers
when 4 is added to 5 times a number,the number increases by 50. find the number.
when 4 is added to 5 times a number,the number increases by 50. find the number.
anonymous
anonymous
asked
Nov 9, 2020
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
448
views
1
answers
16 more than a number is 20 more than twice the number.
16 more than a number is 20 more than twice the number.
anonymous
anonymous
asked
Nov 7, 2020
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
601
views
1
answers
three less than twice what number is -7?
three less than twice what number is -7?
anonymous
anonymous
asked
Nov 4, 2020
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
784
views
1
answers
when the square of an integer is added to ten times the integer, the sum is zero. what is the integer?
when the square of an integer is added to ten times the integer, the sum is zero. what is the integer?
anonymous
anonymous
asked
Oct 31, 2020
Mathematics
math
problem-solver
questions
answers
try
equations
+
–
395
views
1
answers
if 4 is added to the square of a composite integer, the result is 14 less than 9 times that integer. find the integer.
if 4 is added to the square of a composite integer, the result is 14 less than 9 times that integer. find the integer.
anonymous
anonymous
asked
Sep 5, 2020
Mathematics
math
problem-solver
questions
answers
try
equations
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