Answer:
You will need 10 gallons of pure acid to mix with 5 gallons of a 70% acid solution to get a 90% solution.
Step-by-step explanation:
.70(5) + x = .90(x + 5) I want to multiply both sides by 100 to clear the decimal
70(5) + 100x = 90(x + 5) Distribute the 70 and the 90
350 + 100x = 90x + 450 Subtract 90x from both sides
350 + 10x = 450 Subtract 350 from both sides
10x = 100 Divide both sides by 10
x = 10
Suppose a computer manufacturer has the total cost function
C(x) = 76x + 3600
(in dollars) and the total revenue function
R(x) = 376x
(in dollars).
(a) What is the equation of the profit function P(x) (in dollars) for this commodity?
The equation of the profit function P(x) (in dollars) for this commodity is given by P(x) = 300x - 3600
It is given in the problem that,
The total cost function C(x) = 76x + 3600 (in dollars)
Also,
The total revenue function R(x) = 376x (in dollars)
We need to find the equation of the profit function P(x) (in dollars) for this commodity
First we need to understand the following terms
Cost is the price of a commodity which is paid or charged in exchange of something. Example - 1 kg of apple are of 3 Dollars
Revenue, which is determined by multiplying the average sales price by the quantity of units sold, is the money made from regular business operations.
So,
The equation of the profit is given by = Total Revenue - Total Cost
P(x) = R(x) - C(x)
Putting values, we get
P(x) = 376x - (76x + 3600)
P(x) = 376x - 76x - 3600
P(x) = 300x - 3600
Hence, the equation of the profit function P(x) (in dollars) for this commodity is given by P(x) = 300x - 3600
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Dan is making a model volcano for the science fair. He wants an awesome eruption, so he tries different amounts of baking soda and vinegar. First, he tries 2 tablespoons of baking soda and 6 tablespoons of vinegar. Next, he tries 3 tablespoons of baking soda and 9 tablespoons of vinegar. Did Dan use the same ratio of baking soda to vinegar in both eruptions?
In mathematics, a ratio is a comparison of two or more numbers that demonstrates how large one is relative to the other. The dividend or number being divided is referred to as the antecedent, and the divisor or number that is dividing is referred to as the consequent.A ratio divides two numbers to compare them.
a: The ratio of two mathematical expressions that is indicated.
b: the proportions of two or more items in terms of quantity, amount, or size: proportion.
based on the available facts;
2/6 for the first ratio can be converted to 1/3, as can 3/9 for the second ratio.
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The function F(x) = −0.005x^2 + 0.8x + 12 models the relationship between a certain vehicle’s speed and the fuel economy, where F(x) is the fuel economy in kilometres per litre and x is the speed of the vehicle in kilometre per hour.
a) Determine the average rate of change in the fuel economy in the interval of speed [60,80].
b) b) Interpret your result.
a) The average rate of change on that interval is 0.1
b) as we increase the speed in the interval [60, 80], the fuel economy increases at a rate of 0.1
How to find the average rate of change on the given interval?For any function f(x), the average rate of change on an interval (a, b) is given by:
(f(b) - f(a))/(b - a)
In this case, the function is:
F(x) = −0.005x^2 + 0.8x + 12
And the interval is [60, 80]
Then we have:
F(60) = −0.005*60^2 + 0.8*60 + 12 = 42
F(80) = −0.005*80^2 + 0.8*80 + 12 = 44
Then the average rate of change on that interval is:
R = (44 - 42)/(80 - 60) = 0.1
b) What does that rate means?
F(x) relates the fuel economy and x the speed of the vehicle.
This means that as we increase the speed in the interval [60, 80], the fuel economy increases at a rate of 0.1.
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W Work out the area of the triangle below. 4 cm 10 cm 7 cm Not to scale
The area of the triangle is = 19.4 cm²
What is the area of triangle?Triangle's area is equal to 1/2 (b × h) square units.
where the triangle's base and height, respectively, are denoted by b and h. Let's now examine how to use the provided formula to get a triangle's area.
Area of triangle = 1/2 × B × H
We will calculate the height of the triangle with the help of Pythagoras theorem.
Consider a straight line representing the height of the triangle.
⇒ base = 4cm, half of base = 2cm
⇒ hypotonus = 10cm
(h²) = b² + a²
⇒ 10² = 2² + a²
⇒ 100 = 4 + a²
⇒ √96cm = a
a = 9.7cm
area of triangle = 1/2 × 4 × 9.7
= 19.4 cm²
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A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 45 years old, with a standard deviation of 10 years. Suppose that these measures are valid for the population of all home buyers. Complete the following statements about the distribution of all ages of home buyers.
According to Chebyshev's theorem, at least 56% of the home buyer's ages lie between __ years and __ years. (Round your answer to the nearest whole number)
According to Chebyshev's theorem, at least what percent of the home buyers' ages lie between 25 years and 65 years.
Step-by-step explanation:
Given that
A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 45 years old, with a standard deviation of 10 years.That these measures are valid for the population of all home buyers.To find
Complete the given statements about the distribution of all ages of home buyers.So, according to the question
We have,
Mean of ages = 45, andStandard deviation = 10We know that,
Chebyshev's Theorem
The smallest percentage of observations that fall within a precise range of current standard deviations from the mean is estimated by Chebyshev's Theorem. There are many different chance distributions that are covered by this theorem. Chebyshev's Inequality is another name for Chebyshev's Theorem.When the distribution is not normal, Chebyshev's Theorem is used. It states that:
Measures are all within 2 standard deviations of the mean in at least 75% of cases.Measures are all within 3 standard deviations of the mean in at least 89% of cases.The percentage of measurements that are within k standard deviations of the mean is represented by an in general:[tex]P = 100(1-\frac{1}{k^2} )[/tex]
Chebyshev's Theorem is used to determine that:
At least 56% of home buyers are between the ages of 30 and 60.At least 75% of home buyers are between the ages of 25 and 65.For the 1sr item, we have to find k at P = 56,
[tex]P = 100(1-\frac{1}{k^2} )[/tex]
[tex]56 = 100(1-\frac{1}{k^2} )[/tex]
0.56 = 1 - [tex]\frac{1}{k^2}[/tex]
[tex]\frac{1}{k^2} = 0.44[/tex]
k² = 1/0.44
k = [tex]\sqrt{\frac{1}{0.44} }[/tex]
k = 1.5
The bounds are, therefore, within 1.5 standard deviations:
45 - 1.5 × 10 = 30 years old.45 + 1.5 × 10 = 65 years old.Ages 25 and 65 are both 2 standard deviations away from the mean, so:
At least 75% of the home buyers' age lie between 25 years and 65 years.Answer:
According to Chebyshev's theorem, at least 56% of the home buyer's ages lie between 30 years and 65 years.According to Chebyshev's theorem, at least what 75% of the home buyers' ages lie between 25 years and 65 years.To learn more about Chebyshev's theorem, please click on the link:
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HELP HELP HELP HELP HELP
please...
Answer:
-10
Step-by-step explanation:
[tex]f(x) = 2 - 3x \\ [/tex]
So,
[tex]f(4) = 2 - (3 \times 4) = 2 - 12 = - 10[/tex]
Therefore, Option A is correct
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Which of these numbers has a lesser value in the hundred thousands place than that of the number in the box? 6,318,219 1,749,803 3,401,182 4,237,639 J 5,893,254
The number that has a lesser value in the hundred thousands place than 6,318,219 is: 4,237,639.
What is the digit of the hundred thousands place?Starting from the end of the number and moving left, the hundred thousands digit is the 6th digit of the number.
The values of the digit for each number are given as follows:
6,318,219: 3.1,749,803: 7.3,401,182: 4.4,237,639: 2.5,893,254: 8.2 < 3, hence, the number that has a lesser value in the hundred thousands place than 6,318,219 is: 4,237,639.
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C. Julia has six novels she wants read, one of them
which is in the chest of a woman' by Efo Kodjo
Mawugbe. She plans to create a reading list of four of
these novels for an upcoming trip, and different orders
count as different lists. How many reading lists are
possible if 'in the chest of a woman' must be on the
list?
She can have 60 reading list to plan to read the 6 novels that she wants to read including the 'in the chest of a woman' in the list.
We are given that:
Number of novels that Julia wants to read = 6
She plans to read = 4
1 novel is fixed that is "in the chest of a woman' by Efo Kodjo"
We need to tell the number of possible reading list that she can have.
We will use permutation for it
By using permutation, we get that:
Number of reading list = 1 × 5 × 4 × 3
Number of reading list = 5 × 12
Number of reading list = 60 lists
Therefore, she can have 60 reading list to plan to read the 6 novels that she wants to read including the 'in the chest of a woman' in the list.
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How can you represent the number of bacteria after 6 days in terms of exponents?
Answer:
b⁶
Step-by-step explanation:
Where b is the variable, we multiply b by itself six times to represent its multiplications every 6 days.
X °
52°
230°
38°
Find the value of X.
Answer:
Step-by-step explanation:
all of the angles complete a circle so they must add up to 360 degrees.
230 + 38 + 52 + x = 360
320 + x = 360
x = 40 degrees
Confused please help
Answer:
Step-by-step explanation:
if you are trying to find x in the equation
3(2x+2)-3x= 6+3x you have to distribute the 3 (which you did correctly.)
6x+6-3x=6+3x
what you did wrong was canceling out the threes. you cannot cancel out the threes here because the one on the left is negative. What you should do is add 3x to each side like this.
6x+6-3x=6+3x
+3x +3x
6x+6=6+6x
since both sides are equal and we obtain 0=0, this means the equation is in fact an identity which is true for all values of x.
Could someone help me with this I will give you brainlist
Tane and Pete are raising funds for their sports trip.
Between them they need to raise $1000.
There are only 5 weeks until they need the money.
Tane gets paid $15 an hour, and Pete gets paid $16 an hour as he has more experience.
Between them they work for a total of 13 hours each week.
What is the average number of hours that each of them work per week if they are to have
exactly the amount of money they need?
Answer: Tane needs to work 8 hours per week while Pete needs to work 5 hours per week
Step-by-step explanation:
T=Tane. P=Pete
5*13=65
T+P=65
15T+16P=1000
T=65-P
15(65-P)+16P=1000
975-15P+16P=1000
975+P=1000
P=25 hours for 5 weeks
T=65-25
T=40 hours for 5 weeks
P: 25/5=5 hours per week
T: 40/5=8 hours per week
Tane needs to work 8 hours per week while Pete needs to work 5 hours per week
What makes a zero? Using zero to simplify algebraic expressions
It should be noted that an algebraic expression will be equal to zero when the difference is between the same expressions.
How to illustrate the information?It should be noted that an algebraic expression simply means the expression that's used to show the relationship between the variables
In this case, the should be noted that an algebraic expression will be equal to zero when the difference is between the same expressions.
An example is illustrated as:
= 2x - 2x
= 0
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James is saving $15 per week in order to purchase a gaming console. Create a table to represent the relationsip between x, the number of weeks and y, the total amount James has saved.
The total amount saved by the James is: $330.
Equation: What is it?The relationship between two expressions is expressed by the word equation. It employs many mathematical symbols, including greater-than, less-than, and equal.
The amount James has saved, according to the query, is $15 each week.
It is now time to generate the table that shows how the variable "x" and the number of weeks relate to one another.
The following are the possible possibilities for the necessary parameters "x" and "y":
x = [1 2 3 4]
y = [15 30 45 60]
The last formula may now be written as y = 15x.
The formula will be y = 15x = 15x22 = 330 dollars after 22 weeks.
As a result, the James have saved $330.
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what is 8,2 equivalent to
Answer: 4,6
Step-by-step explanation:
If f(x) = x³ +8, g(x) = x - 2, h(x) = √, then (fogoh)(x)=
The value of (fogoh)(x) is [tex]\sqrt{x^{3} }[/tex] + 6x + 12[tex]\sqrt{x}[/tex]
Here, we are given 3 functions as listed below:
f(x) = [tex]x^{3}[/tex] +8
g(x) = x - 2
and, h(x) = [tex]\sqrt{x}[/tex]
now, (fogoh)(x) can be written as follows-
f[g{h(x)}] = f{g([tex]\sqrt{x}[/tex])}
here, g([tex]\sqrt{x}[/tex]) = [tex]\sqrt{x}[/tex] - 2
Thus, f{g([tex]\sqrt{x}[/tex])} = f([tex]\sqrt{x}[/tex] - 2)
Substituting x = [tex]\sqrt{x}[/tex] - 2 in the function f(x) we get,
[tex](\sqrt{x} - 2)^{3}[/tex]+8
using the algebraic property [tex](a+b)^{3}[/tex] = [tex]a^{3} + b^{3}[/tex] + 3ab(a + b), we get-
= [tex]\sqrt{x^{3} }[/tex] - [tex]2^{3}[/tex] + 3[tex]\sqrt{x}[/tex](-2){[tex]\sqrt{x}[/tex] - 2} + 8
= [tex]\sqrt{x^{3} }[/tex] - 8 + 6x + 12[tex]\sqrt{x}[/tex] + 8
= [tex]\sqrt{x^{3} }[/tex] + 6x + 12[tex]\sqrt{x}[/tex]
Thus the value of (fogoh)(x) = [tex]\sqrt{x^{3} }[/tex] + 6x +12[tex]\sqrt{x}[/tex]
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Use this limit to find f′(11) given f(x)=sqrt(x-2)
Answer: f'(11)=1/6
Step-by-step explanation:
f(x)=sqrt(x-2)
f(x)=(x-2)^1/2
f'(x)=1/2 * (x-2)^(1/2-1)
f'(x)=1/2 * (x-2)^(-1/2)
f'(11)=1/2 * (11-2)^(-1/2)
f'(11)=1/2 * (9)^(-1/2)
f'(11)=1/2 * (9)^(1/2 * (-1))
f'(11)=1/2 * (9^1/2)^(-1)
f'(11)=1/2 * (3)^(-1)
f'(11)=1/2 * 1/3
f'(11)=1*1/(2*3)
f'(11)=1/6
Using the definition of the derivative, we have
[tex]\displaystyle f'(11) = \lim_{x\to11} \frac{\sqrt{x-2} - \sqrt{11-2}}{x - 11} = \lim_{x\to11} \frac{\sqrt{x-2} - 3}{x - 11}[/tex]
Rationalize the numerator.
[tex]\displaystyle \frac{\sqrt{x-2}-3}{x-11} \cdot \frac{\sqrt{x-2}+3}{\sqrt{x-2}+3} = \frac{\left(\sqrt{x-2}\right)^2 - 3^2}{(x-11)\left(\sqrt{x-2}+3\right)} = \frac{x - 11}{(x - 11) \left(\sqrt{x-2} + 3\right)}[/tex]
If [tex]x\neq11[/tex], we can simplify the limit to
[tex]\displaystyle f'(11) = \lim_{x\to11} \frac{x-11}{(x-11)\left(\sqrt{x-2}+3\right)} = \lim_{x\to11} \frac1{\sqrt{x-2} + 3}[/tex]
The function in the remaining limit is continuous at [tex]x=11[/tex], so we end up with
[tex]\displaystyle f'(11) = \frac1{\sqrt{11-2} + 3} = \boxed{\frac16}[/tex]
what is 38-12x3 equal
Answer: 2
Step-by-step explanation: 12 x 3 first becuase pemdas
There is no question that is the station
Answer: lol
no question that is the station? so there's no question?
ok
Step-by-step explanation:
What is the five-number summary for the data set?
Answer:B
Step-by-step explanation:A summary consists of five values: the most extreme values in the data set (the maximum and minimum values), the lower and upper quartiles, and the median.
Zachary Company reported the following data regarding the product it sells: Sales price $48 Contribution margin ratio 25% Fixed costs $336,000 Required Use the contribution margin ratio approach and consider each requirement separately. What is the break-even point in dollars? In units?
Answer:
The break-even point in dollars is 1,344,000 and in units is 28,000. The break-even point is calculated by dividing the fixed costs by the contribution margin. In this case, 336,000 ÷ .25 = 1,344,000. The break-even point in units is then calculated by dividing the break-even point in dollars by the sales price. In this case, 1,344,000 ÷ 48 = 28,000.
Step-by-step explanation:
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When subtracting 2.9 from a certain number, the result is 64.24, as seen below. What number should go in the box to complete the subtraction problem?
The decimal 2.9 is subtracted from an unknown whole number to get 64.24. The unknown whole number has 6 in the tens place, an unknown number in the ones place, 1 in the tenth place, and 4 in the hundredth place.
(5points)
https://lms.lausd.net/assignment/6055492281/assessment#:~:text=When%20subtracting%202.9,Blank%201%3A
Blank 1:
Answer:
can you take a picture of the sum
7 will go in the box. The full number would be 67.14.
work: 64.24 + 2.9 = 67.14.
5 out of every 8 students sureyed owns a bicycle. There are 65 bicycles. How many students were surveyed?
Answer:
104
Step-by-step explanation:
You would do this by diving 65 by 5, you get 13 then multiple that by 8.
The mass of a paperclip is 6.0 × 10−4 mg. If a box of paperclips has 7.23 × 104 paperclips, determine the total mass of the paperclips in the box. Write the final answer in scientific notation with the correct number of significant digits.
4.338 × 101 mg
4.3 × 101 mg
4 × 101 mg
3.62 × 100 mg
Taking into account the definition of Scientific notation, the correct answer is the first option: the total mass of the paperclips in the box is 4.338×10¹ mg.
Scientific notationScientific notation is a quick way to represent a number using powers of base 10.
The numbers are written as a product:
a×10ⁿ
where:
a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.n is a whole number, which is called an exponent or an order of magnitude. Represents the number of times the point decimal is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.Total mass of the paperclips
In this case, you know that:
The mass of a paperclip is 6.0×10⁻⁴ mg. A box of paperclips has 7.23×10⁴ paperclips.To know the total mass of the paperclips in the box, you must multiply the number of paperclips in the box by the mass of each paperclip:
7.23×10⁴×6.0×10⁻⁴
To multiply numbers in scientific notation, you multiply the numbers that are not powers of 10 (the numbers previously called "a") and add the exponents of 10.
(7.23×6.0)×10⁴⁻⁴= 43.38×10⁰= 4.338×10¹ mg
Finally, the correct answer is the first option: the total mass of the paperclips in the box is 4.338×10¹ mg.
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Identify the correct justification for each step, given that m/1 = 30° and m/2 = 30°.
30 = m<1 = m<2
m<1 is equals to m<2 because these two angles are transitive property.
How to identify the correct justification for m<1 = 30° and m<2 = 30°?given that m<1 = 30° and m<2 = 30°.
m<1 = 30
m<2 equals to m<1
m<2 = 30 can be obtained by substituting 30 into the second equation.
The proof is now complete.
The Transitive Property of Equality can also be used, which asserts that if X = Y and Y = Z, then X = Y = Z. In other words, if one number is equal to another, and that other number is equal to a third, then all three numbers must be the same.
thus, 30 = m<1 = m<2, m<1 is equals to m<2 because these two angles are transitive property.
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4.
Calculate 3% of $600
Hey there!
3% of $600.00
= 3% * $600.00
= 0.03 * 600
= 3/100 * 600/1
= 3(600) / 100(1)
= 1800/100
= 1800 ÷ 100 / 100 ÷ 100
= 18/1
= 18 ÷ 1
= 18
Therefore, your answer should be:
18
Good luck on your assignment & enjoy your day!
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How can setting your cell phone to silent while listening help you listen actively?
Answer: Turning your cell phone off or on silent can help you listen actively because you won't have the urge to look at it unless you hear a little notification.
But honestly, whose question is this, it's so random, and I think everyone can listen with their phones out, because I pay more attention when I'm doing something like on a phone or listening to music.
Find the following given the function f(x)=
Answer:
[tex]-\frac{3+\sqrt{5}}{4}[/tex]
Step-by-step explanation:
[tex]\sqrt{20} \leq 5 \implies f(\sqrt{20})=\frac{2}{\sqrt{20}-6} \\ \\ =\frac{1}{\sqrt{5}-3} \\ \\ =\frac{\sqrt{5}+3}{-4} \\ \\ =-\frac{3+\sqrt{5}}{4}[/tex]
You are the owner of four Taco Bell restaurant locations. You have a business loan with Citizens Bank taken out 60 days ago that is due in 90 days. The amount of the loan is $50,000, and the rate is 9.5% using ordinary interest.
You currently have some excess cash: $35,000. Due to situations beyond your control, you, as the owner, must make an immediate business decision now to pursue only one of these two choices:
1) sending all of the $35,000 to Citizens Bank as a partial payment on your loan, or
2) using the $35,000 to purchase serving supplies such as food containers, cups, and plastic dinnerware for your inventory. This is the last day to take advantage of the opportunity to save some money due to a special discount price that is "10% off" the normal cost of $35,000 for these items.
Consider these calculations:
(a)
How much interest (in $) will you save on this loan if you make the partial payment and don't purchase the additional serving supplies? (Round your answer to two decimal places.)
$
(b)
How much money (in $) will you save if you purchase the serving supplies with the discount and don't make a partial payment on the loan? (Round your answer to two decimal places.)
$
(c)
How much (in $) will you save by purchasing the discounted serving supplies rather than making the partial payment? (Hint: Find the difference between the savings on the supplies found in part (b) and the savings on the loan interest found in part (a). Round your answer to two decimal places.)
$
(d)
What other factors should you consider before making this decision?
The amount saved by repaying the loan early is $831.25
The amount of discount received by purchasing supplies is $3,500
The net amount saved by purchasing supplies rather than repaying loan is $2,668.75
What is ordinary interest?
Ordinary interest is the interest computation that is based on 360-day a year count rather than 365-day year count, hence, in determining the amount saved by paying $35,000 out of the amount due to Citizens Bank, we time-apportion the interest for 90 days with respect to 360 days not 365 days.
Amount saved in interest=$35,000*9.5%*90/360
Amount saved in interest=$831.25
Using the $35,000 to purchase serving supplies, 10% discount is given off the normal cost of $35,000
Amount saved with discount=10%*$35,000
Amount saved with discount=$3,500
The difference between discount on supplies and interest saved=$3,500-$831.25
The difference between discount on supplies and interest saved=$2,668.75
The other factors to consider before making the final decisions include, the fact the loan is more important than the supplies because the loan relates to the firm's financing rather than operational needs of supplies
Secondly, the amount saved in interest may be more if another loan of $35,000 can be borrowed elsewhere with significant lower interest rates
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