Answers
Answer:
12.
Step-by-step explanation:
36 = 3 * 12
48 = 4 * 12,
Related Questions
Johanna, Elizabeth, and Dan are preparing a chemical solution for a research project. When
working alone, either Johanna or Elizabeth can prepare the solution in six minutes. Dan can
prepare the solution in four minutes if he works alone. How many minutes will it take the thre
of them to prepare the solution if they work together?
Answers
Using the together rate, it is found that they would prepare the solution in 1.71 minutes working together.
What is the together rate?It is the sum of each separate rate.
In this problem, the rates are given by:
Johanna's: 1/6.Elizabeth's: 1/6.Dan's: 1/4.Hence the together rate is given by:
[tex]\frac{1}{x} = \frac{1}{6} + \frac{1}{6} + \frac{1}{4}[/tex]
[tex]\frac{1}{x} = \frac{1}{3} + \frac{1}{4}[/tex]
[tex]\frac{1}{x} = \frac{4 + 3}{12}[/tex]
7x = 12
x = 12/7
x = 1.71.
They would prepare the solution in 1.71 minutes working together.
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Question 7: 10 pts
For Thursday's English class, 4 students are assigned to give presentations. How many different ways can the
teacher order the student presentations?
4 ways
16 ways
24 ways
7 ways
Answers
The teacher ordered the students in 24 ways.
We have given that the total number of students is 4.
4 students are assigned to give presentations.
We have to find the arrangement of the 4 students.
What is the arrangement?
An arrangement (or ordering) of a set of objects is called a permutation. (We can also arrange just part of the set of objects.)
In a permutation, the order that we arrange the objects n is important.
4 students can be arranged by 4! ways.
[tex]4!=4*3*2*1\\ =12*2\\=24[/tex]
Therefore option 3 is correct.
The teacher ordered the students in 24 ways.
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During a one-year time period, how many gallons of water would the average household save by using an efficiency washer vs a regular washer? Is this one-year savings more or less than the amount of water an average person drinks in a lifetime? Explain and show your assumptions, calculations, and conversions.
Consider it to be 2 separate problems:
1. How much water is saved in a one-year period when using an efficiency washer vs regular washer - answer based on your assumptions and calculations for full credit
2. How much water does an average person drink in a lifetime – arrive at this answer based on your assumptions and calculations
3. Compare the answers to those 2 questions to arrive at your conclusion
Below are 2 pieces of information that you might find helpful
there are 128 oz in a gallon
there are 365 days in a year and also 52 weeks in a year
Answers
determine the slope m, x- intercept , and y intercept of the equation 5x-2y=10
Answers
x-intercept(s): (2, 0)
y-intercept(s): (0, -5)
M= [tex]\frac{5}{2}[/tex]
Choose one of the following percents: 15%, 35%, Or 85%. Write and solve a word problem that uses you percent and involves finding the whole
Answers
Answer: On her math test, Elliana gets 6 questions wrong, or 15% of the total questions. How many questions are on the test?
Esplaination: She has 40 questions on the test because she has 40%/100 or 2/5 20x5=100 and 2x20=40
BTW the question is made up and goes togethetr with the bottom.
15. Find the area of the figure at
the right.
Answers
Answer:
The area is 64.
Step-by-step explanation:
First find the area of the simple shape in this case the regtangle so you would do 12 × 6 which equals 72. Then find the area of the shape that is taken away which is a triangle. In order to find the area of the triangle do 8×2÷2 which would equal 8. Finally do 72 - 8 and get your answer of 64.
Pls I need help with this
Answers
Answer:
ok no problem first clean your mind
then singing a song ok i
love you
Answer it please!!!! I need help with it!
Answers
Answer:
2=B
Step-by-step explanation:
Insert 2 in the down phrase
Answer:
answer is C.1
Step-by-step explanation:
the value is g(2)= 1
A two-digit number is reduced by 45 when the digits are interchanged. The digit in the tens pace
of the original number is 1 more than 3 times the digit in the units place. Define variables and
write a system of equations to find the original number.
Answers
The system of equations to find the original number is;a = 3b +1 and (10a + b) - (10b +a) = 45
What is the system of equations to find the original number?From the task content;
let the number in the tens place of the original number be a and the number in the units place be b.Hence, the required system of equations is;
a = 3b(10a + b) - (10b +a) = 45On this note, the required numbers can be evaluated from the equations above;
Read more on system of equations;
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What does the term unit fraction mean? Provide an example.
Answers
Answer:
A unit fraction is a fraction whose numerator is 1. Example is: (1/1, 1/2, 1/3)
Step-by-step explanation:
Answer:
In math, a unit fraction can be defined as a fraction whose numerator is 1. It represents 1 shaded part of all the equal parts of the whole.
Step-by-step explanation:
For example: 1/4, 1/6, 1/25
The following figure shows a cube.
Which expression represents the surface area of the cube?
7 Choose 1 answer:
6X49
7X7X7
6X14
7+7+7+7+7+7
Answers
[tex]7[/tex] · [tex]7[/tex] · [tex]7[/tex]
Sure Hope this helps you :D
Answer:
6 x 49
Step-by-step explanation:
Khan Academy
Solve the exponential equation. (5)^x^2=2^5x
Answers
The sales tax for an item was 26.40 and it cost 330 before tax find the sales tax rate
Answers
Answer:
8%
Step-by-step explanation:
Step-by-Step Explanation:
Sales tax = 26.40
Total cost before tax = 330
Sales tax rate = ?
Therefore, Sales Tax Rate:
= 26.40/330 * 100
= 2640/330
= 8
Hence, it is 8%
help how do I do this???? (1/4-3/5n)-n
Answers
Answer:
1/4 - 8n/5
Step-by-step explanation:
(1/4-3/5n)-n = 1/4 - 3/5 n - 5/5 n = 1/4 - 8/5 n = 1/4 - 8n/5
Real math tutor please explain how to solve this
Answers
Answer:
D)14Step-by-step explanation:
Using the Theorem,
BA*AD=CA*AE
3x+2*6=4x-2*8
18x+12=32x-16
12+16=32x-18x
28=14x
x=2BD= BA+AD
3x+2+6
3(2)+2+6
6+2+6
14MARK ME AS BRAINLISTThe volume of a rectangular prism, in cubic meters, is given by the expression x to the 3rd power
Answers
Answer:
power of 3
Step-by-step explanation:
that formula of rectangular prism V=L×b×h when all of number are in meter will not convert if the number of cubic are not all meter must convet to be in meter by dividing by 10, 100 or 1000
Wilte the following equation in standard form:
Answers
Answer:
B. option is the current answer.
Step-by-step explanation:
Standard form here means, the the exponential powers of constants must be arranged in ascending order.
Here,
constant is " a ".
Exponential power ( in ascending order ) = 5, 4, 2, 1
please help :(
brainliest for the correct answer, thank yous, and stars!
Answers
Answer:
32
8
Not enough info
Step-by-step explanation:
4/5 of 40 is 32
40 - 32 = 8
We don't know the total number of marbles in the bag
I WILL LITERALLY GIVE YOU 100 POINTS PLEASE!!!
The dot plot shows how many attempts it took for each student to complete a puzzle:
Is the median or the mean a better measure of center for these data and why?
A. Mean, because the data are skewed and there are outliers
B. Mean, because the data are symmetric and there are no outliers
C. Median, because the data are skewed and there are outliers
D. Median, because the data are symmetric and there are no outliers
Answers
D) Median, because the data are symmetric and there are no outliers
Round 66.3899872389 to the nearest thousandth.
Answers
Answer:
66.390
Step-by-step explanation: 66.389 the 9 is thousandths, it rounds up to 66.390
The sum of twice a number and eight is eleven.
Question 4 options:
2x+8=11
2x−8=11
2(x−8)=11
2(x+8)=11
Answers
Answer:
2x+8=11
Step-by-step explanation:
The equation 2x + 8 = 11 would be the answer.
2 (coefficient) ----> it would multiply by the unknown value represented by the common variable "x".
Because in the given situation, it says twice (means 2 multiplied by a number or a number multiplied twice by itself) then multiplication would be the order of operation used between the 2 and x.
The "and" indicates the order of operation addition, as it is proven as the only given options for the answer all equal 11.
Therefore, proving that option A is the answer.
Y/6=8 or read as follows Y divided by six equals eight
Answers
Answer:
y/6=8
Multiply both sides by 6
6y/6) = 8×6
Simplify
y=48
What is the solution to the system of equations below?
(Hint: Sole using substitution)
y=2x+1
3x + y=-9
The solution is
Answers
y=2x+1
3x + y=-9
3x + y=-9 is the same as y=-3x-9
y=2x+1
y=-3x-9
2x+1 = -3x-9
—-add 3x on both sides
5x+1=-9
—-subtract 1 from both sides
5x=-10
—-divide 5 on both sides
5x/5 = -10/5
x = -2
——now plug in x in one of the equations to find y
y=2x+1
y=2(-2)+1
y=-4+1
y=-3
The solution is (-2,-3).
Do these data suggest an association between age and experiencing side
effects?
A. No. A greater percentage of both adults and children had no side
effects.
B. No. Adults were as likely to experience side effects as children.
C. Yes. A greater percentage of children experienced side effects
than adults.
D. Yes. A greater percentage of adults experienced side effects than
children.
Answers
answer would most likely be C
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER. Find the values of the variables. Then find the side lengths of the square.
X=_____
Y=_____
Answers
Step-by-step explanation:
I am not sure this is a square.
this could be a rectangle.
to be safe, I am following that path.
in a rectangle opposite sides are of equal length.
that means
y - 1 = 2y - 7
y = 2y - 6
0 = y - 6
y = 6
3x - 4 = 3y - 13
3x - 4 = 3×6 - 13
3x - 4 = 18 - 13 = 5
3x = 9
x = 3
as it turns out, it is a square, so we could have used every side expression to be equal with every other side expression, but better safe than sorry ...
What is the next term of the geometric sequence?
20, -10, 5
Answers
First find the common ratio.
Find missing angle
100°
100°
X=
Answers
Answer:
200 + X
Step-by-step explanation:
Gavin is selling water bottles at a baseball game to help raise money for new uniforms. Before the game, he buys 48 water bottles for a total of $18.50. At the game, he sells all of the bottles for $1.25 each. How much profit does Gavin make?
Answers
Step-by-step explanation:
he buys 48 bottles for $18.50.
FYI : that means he gets them for
18.5/48 = $0.385416666... per bottle
he sells all 48 bottles for $1.25 per bottle.
that means the revenue (or selling income) is
48 × 1.25 = $60.00
profit is now income minus basic costs :
profit = 60 - 18.5 = $41.50
help fast!!!!!!!!!!!!!
Answers
Answer:
Refer the photos above and have a good day
Question 14 Write the equation of the reaches a slope of point-slope form.
Answers
Answer:
y = 3x - 1 .
Step-by-step explanation:
The general point-slope form is y = mx + c where m = slope and c is the y-intercept
As we are given the slope and one point we first use the point-slope form:
y - y1 = m(x - x1)
y - 5 = 3(x - 2)
y = 3x - 6 + 5
y = 3x - 1 (Answer).
