Answers
15. 17+6=23
16.10-6=4 and 17 -6=11, 11+4=15.
Related Questions
How many elements does each of these sets have where a and b are distinct elements?
a.p({a, b,{a, b}})
b.p({∅, a,{a},{{a}}})
c.p(p(∅))?
Answers
b. [tex]\bigg|\{\varnothing,a,\{a\},\{\{a\}\}\}\bigg|=4\implies\bigg|\mathscr P\bigg(\{\varnothing,a,\{a\},\{\{a\}\}\}\bigg)\bigg|=2^4=16[/tex]
c. [tex]|\varnothing|=0\implies\bigg|\mathscr P(\varnothing)\bigg|=2^0=1\implies\bigg|\mathscr P(\mathscr P(\varnothing))\bigg|=2^1=2[/tex]
what are partial products of 374 times 510
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Hope the helps you and everyone out!!!
−8x+4y=24
−7x+7y=28
What is the solution?
Answers
−7x + 7y = 28 -- (2)
Eqn (1) & (2) are simplified as
y - 2x = 6 -- (3)
y - x = 4 -- (4)
By making y the subject of formula in (4), we have
y = x + 4 -- (5)
Substitute x + 4 for y in (3), then
x + 4 - 2x = 6
x - 2x = 6 - 4
- x = 2
x = - 2.
Substitute - 2 for x in (5), then
y = - 2 + 4
y = 2.
Therefore, (x, y) = (- 2, 2) ...Ans.
the amount of money in an account with continuously compounded interest is given by the formula A = Pert, where P is the principal, r is the annual interest rate, and t is the time in years. Calculate to the nearest tenth of a year how long it takes for an amount of money to double if interest is compounded continuously at 5.2%. 5.9 years 13.3 years 1.3 years 0.6 years
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ln 2=ln e^0.052t=0.052t ln e=0.052t
t=(ln 2)/0.052=13.33 years
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if a debt of $480 is reduced by 20% find the new debt
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To find the new debt after a 20% reduction, subtract 20% of the original debt from the original debt.
Explanation:To find the new debt after a 20% reduction, we need to subtract 20% of the original debt from the original debt. Here's how to calculate it:
Convert 20% into a decimal by dividing it by 100: 20% = 0.20Multiply 0.20 by $480 to find the reduction amount: 0.20 x $480 = $96Subtract $96 from $480 to find the new debt: $480 - $96 = $384Therefore, the new debt after a 20% reduction is $384.
The new debt after being reduced by 20% is $384.
Explanation:To find the new debt after it has been reduced by 20%, we can use the following steps:
Calculate 20% of $480 by multiplying 480 by 0.20. 20% of 480 is $96.Subtract the amount calculated in step 1 from the original debt. The new debt is $480 - $96 = $384Therefore, the new debt after being reduced by 20% is $384.
simplify (7x−13)−(x+5)
Answers
Simplify.
[tex](7x-13)-(x+5)[/tex]
Distribute the Parenthesis.
[tex]7x-13-x-5[/tex]
Combine Like Terms.
[tex]7x-x-13-5[/tex]
[tex]6x-18[/tex]
Hope this helps.
-Benjamin
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(1 pt) let x be an exponential random variable with parameter \lambda = 4, and let y be the random variable defined by y = 2 e^x. compute the probability density function of y:
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Note that [tex]x\in[0,\infty)[/tex], so that [tex]y\in[2,\infty)[/tex].
[tex]F_Y(y)=\mathbb P(Y\le y)=\mathbb P(2e^X\le y)=\mathbb P\left(X\le\ln\dfrac y2\right)=F_X\left(\ln\dfrac y2\right)[/tex]
[tex]F_X(x)=1-e^{-4x}[/tex]
[tex]\implies F_Y(y)=1-e^{-4\ln\frac y2}=1-\dfrac{16}{y^4}[/tex]
[tex]\implies f_Y(y)=\dfrac{\mathrm dF_Y(y)}{\mathrm dy}=\dfrac{64}{y^5}[/tex]
If a truck traveled 75.648 miles per year how many miles did it travel monthly
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Joe completed 28 math problem from his homework. Joe has done 80% of his homework. How many more math problem does Joe have to complete
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0% = 0.8
divide 28 by 0.8
28 / 0.8 = 35 total questions
35 -28 = 7 more questions to do
PLEASE HELP!!! WILL BRAINLIEST
Jane ran 3/8 of the distance that Jack ran. If Jane ran 2/3 of a mile, how far did Jack run?
Which of these could be used to solve the problem?
A. 3/8 * = 2/3
B. 2/3 * = 3/8
C. x=(2/3) (3/8)
D. x=3/8 *- 2/3*
Answers
Using proportions, it is found that the distance that Jack ran is given by:
A. [tex]\frac{3}{8}x = \frac{2}{3}[/tex]
The distance ran by Jane was of [tex]\frac{2}{3}[/tex] of a mile.This distance was also [tex]\frac{3}{8}[/tex] of the distance ran by Jack, which is given by x.Applying the proportion, we have that [tex]\frac{3}{8}[/tex] multiplied by x is equals to [tex]\frac{2}{3}[/tex], hence:
[tex]\frac{3}{8}x = \frac{2}{3}[/tex]
Which means that the correct option is given by a.
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choices are (mode, mean, median)
A sample was selected and the eye color of every person in the sample was recorded.
{Brown,Brown,Green,Blue,Brown,Green,Hazel,Brown,Green,Hazel}
The ___________ should be used.
A Girl Scout troop sold cookies. The number of boxes each scout sold is listed below.
{35,45,47,27,50,43,25,52,37,312}
The ___________ should be used.
A pizza parlor sold the follow number of pizzas each day from January 27-28.
{30,28,23,25,35,27,29}
The __________ should be used.
Answers
The second one is median.
The third is mean.
Jana Has $5. She wants to buy a notebook for $4.50.The sales tax is 7%. Does she have enough money? Explain your reasoning.
Answers
Find the partial derivatives of the function w=4r2+6s2+
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The partial of w with respect to r is 8r. That with respect to s is 12s.
Change 5 2/3 to a mixed decimal and round to the nearest hundredth.
Answers
to change 5 2/3 to a mix fraction, we times 3 x 5 = 15 then add the numerator so 15 + 2 = 17 and we get 17/3 and now we divide 17/3 to get our decimal, which is 5.67
A School raised $13,809 during it's fall fundraiser and $20,786 during it's winter fundraiser. The total fundraising goal for the school year is $50,000. How much more money does the school need to raise during the spring fundraiser to reach its goal?
Show your work...
Answers
The extra fundraiser school should get is $15405.
What is a fundraiser?A fundraiser is an event which is intended to raise money for a particular purpose, for example, for a charity.
Given that, A School raised $13,809 during its fall fundraiser and $20,786 during its winter fundraiser. The total fundraising goal for the school year is $50,000.
The yet total fundraised = fall fundraiser + winter fundraiser
= $13,809 + $20,786
= $34595
Since, they need $50000 in total,
Therefore, remaining amount = total - collected
= $50000 - $34595
= $15405.
Hence, the extra fundraiser school should get is $15405.
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what is the volume of a tank that can hold 18 754 Kg of methanol whose density is 0.788g/cm3
Answers
(0.788) = (18.754) / V
0.788V = 18.754
V = (18.754) / (0.788)
V = 23.799
The volume of a tank is 23.8m3
that can hold 18 754 Kg of methanol whose density is 0.788g/cm3
Using this formula
Volume=m/p
Let plug in the formula
Volume=18,754 kg/0.788g/cm3
Volume=18,754,000g/0.788g/cm3
Volume=23,799,4924cm2
Volume=23.8m3 (Approximately)
Inconclusion The volume of a tank is 23.8m3.
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A chemist has two large containers of sulfuric acid solution, with different concentrations of acid in each container. Blending 305 mL of the first solution and 580 mL of the second gives a mixture that is 10.24% acid, whereas blending 85 mL of the first mixed with 490mL of the second gives a 6.10% acid mixture. What are the concentrations of sulfuric acid in the original containers?
Answers
300a+600b=900·(15)=13500
1.3a+6b=135
100a+500b=600·(12.5)=7500
2.a+5b=75
Multiply eq. 2 by (-3) and add to eq. 1 to eliminate A.
3a+6b-3a-15b=135-225
-9b=-90
b=10
Then from eq. 2,
a+50=75
a=25
The first container is a 25% solution and the second container is a 10% solution
The concentrations of sulfuric acid in the original containers as per the system of equation is equals to 24% in first container and 3% in second container.
What is system of equation?" A system of equations is finite set of equations for which we find the common solution."
According to the question,
'a' represents the concentration of acid in first container
'b' represents the concentration of acid in second container
Situation1: 305 mL of the first solution and 580 mL of the second gives a mixture that is 10.24% acid, it represents the equation as,
a% of 305 + b% of 580 = 10.24% of 885
⇒ 305a + 580b = 9062.4 _______(1)
Situation 2:85 mL of the first mixed with 490mL of the second gives a 6.10% acid mixture, it represents the equation as,
a% of 85 + b% of 490 = 6.10% of 575
⇒ 85a + 490b = 3507.5 ______(2)
Solve system of equation by multiplying (1) by 85 and (2) by 305 we get,
25925a + 49300b = 770303 _______(3)
25925a + 149450b = 1069787.5 _______(4)
Subtract system of equation (3) from (4) we get,
100150b = 299483.5
⇒ b = 2.9
⇒ b≈ 3%
Substitute the value of 'b' in (2) we get,
85a + 490(3) = 3507.5
⇒85a + 1407 = 3507.5
⇒ 85a = 2037.5
⇒ a = 23.9
⇒ a ≈24%
Hence, concentration of sulfuric acid in first container 24% and second container 3% as per the system of equation.
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Find the absolute extrema of the function \(f(x)= xe^{- x^2/18}\) on the interval \([-2,4]\).
Answers
An arrow is shot vertically upward from a platform 25ft high at a rate of 172ft/sec. When will the arrow hit the ground?
Answers
h= -16t^2+185t+10, h = 0 when it hits the ground
16t^2+185t+10 = 0
t = 11.6sec (to nearest tenth)
Hope this helps
A concrete stepping stone measures 20 square inches. What is the area of 30 such stones
Answers
What is the relationship between the values of the 4s in the number 4,438
Answers
The thousands place 4 is 10x larger than the hundreds place 4
hope this helps
Answer:
The leftmost 4 has a positional value of [tex]4\times10 ^ 3[/tex]. While the other 4 that appears in the displayed figure has a positional value of [tex]4\times10^2[/tex]. Then, it can be said that the relationship between the major and the minor is: [tex]\frac{4\times10 ^ 3}{4\times10 ^ 2} = 10[/tex]. That is, the relationship is that the 4 on the left is 10 times greater than the other 4 .
Step-by-step explanation:
Jack wants to buy a skateboard that usually sells for $79.40. All merchandise is discounted by 12%. What is the total cost of the skateboard if Jack has to pay a state sales tax of 6.75%. Round your intermediate calculations and answer to the nearest cent.
Answers
What is the value of s 0.7(3s+4)-1.1s=7.9
Answers
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After entering the test scores from her statistics class of 25 students, the instructor calculated the mean and the median of the scores. upon checking, she discovered that the toptop score entered was 73, but it should have been 83. when she corrects this score, how will the mean and median be affected?
Answers
A doctor's office has a computer file showing the heights of 100 male patients of one of the doctors of the practice. the heights range from 18 inches to 68 inches. by accident, the greatest height has been recorded as 680 inches, instead of 68 inches. (a) does this affect the average? if so, by how much? (b) does this affect the median? if so by how much?
Answers
B) No, it would just be an outlier.
The effect of the mistake is:
The mean value obtained is larger. The median value is not affected.The average value recorded is larger than it actually is. Hence , the average value is affected by the mistake. Given the information supplied, we can only deduce that the mean value will be greater than the actual average.
The mean involves taking the sum of all the values and dividing it by the number of values.
Using a value of 680 instead of 68 will mean that, the sum obtained is greater than the actual sum.
The median on the other hand isn't affected by this error, because, the arrangement of the values isn't changed.
The sorting of values is very crucial to calculating the Median. However, either 68 or 680. The position of the maximum value remains unchanged.
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Fred lives in Syler City, where the tax rate is 3.5%. His property is assessed at $93,000. What is his tax?
Answers
Fred's tax is $3255.
93000 x 0.035 = 3255
Fred's property tax is 3255
Multiply the property assess with the tax rate to get his tax
(make sure to change the percentage to decimal by moving the decimal place two places to the left)
hope this helps
What is the value of x? Enter your answer in the box
Answers
using Pythagorean Theorem
x^2 +b^2 = c^2
x^2 +12^2 = 13^2
x^2 +144 = 169
x^2 = 25
x = sqrt(25) = 5
x = 5
Gerard bought 9 hamburgers and 3 orders of fries for 24.75. Chris bought 6 hamburgers and 4 orders of fries for 19.50. Each hamburger cost the same amount. Each Order of fries cost the same amount. Wrote a system of equations that can be used to find how much one hamburger and one Order of fries cost.
Answers
6h + 4f = 19.50 ...multiply by -3
----------------------
36h + 12f = 99 (result of multiplying by 4)
-18h - 12f = - 58.50 (result of multiplying by -3)
--------------------add
18h = 40.50
h = 40.50/18
h = 2.25 <== hamburgers cost 2.25 each
6h + 4f = 19.50
6(2.25) + 4f = 19.50
13.50 + 4f = 19.50
4f = 19.50 - 13.50
4f = 6
f = 6/4
f = 1.50 <== fries cost 1.50 per order
Answer:
System of equations:
9x+3y=24.75
6x+4y=19.50
x: cost of a hamburger
y: cost of an order of fries
Step-by-step explanation:
We define the variables of the system of equations:
x: cost of a hamburger
y: cost of an order of fries
We propose the system of equations:
To Gerard: 9x+3y=24.75
To Chris: 6x+4y=19.50
where, the coefficients in the equations represent the quantity that was purchased from each product and the variables represent the costs of each product.
Which of the following represents the vertical asymptotes of the function
Answers
Let me know if you need help.
We can use this expression by completing the square, and the difference of squares as follows:
[tex]\displaystyle{ x^2-2x-8=(x^2-2x+1)-9=(x-1)^2-3^2[/tex]
[tex]=(x-1-3)(x-1+3)=(x-4)(x+2)[/tex].
So, the zeros of the polynomial [tex]\displaystyle{ P(x)=x^2-2x-8[/tex] are x=4 and x=-2.
Thus, the asymptotes are the lines x=-2, and x=4.
Answer: D
a=9y+3yx solve for y
Answers
Answer:
[tex]y=\frac{a}{(9+3x)}[/tex]
Step-by-step explanation:
we have
[tex]a=9y+3yx[/tex]
Solve for y
That means -----> isolate the variable y
Step 1
Factor the variable y in the right side
[tex]a=y(9+3x)[/tex]
Step 2
Divide by [tex](9+3x)[/tex] both sides
[tex]a/(9+3x)=y(9+3x)/(9+3x)[/tex]
Step 3
Simplify
[tex]y=\frac{a}{(9+3x)}[/tex]