Answer:
x> - 4
Step-by-step explanation:
In order to solve these simultaneous inequalities, we need to write them as two separate inequalities, and find the values of x that satisfy both of them.
Jack has 80 marbles.
He gives 1/5
of the marbles to his friends.
(c) Work out how many marbles Jack now has.
inq
Answer:
He now has 64 marbles.
Step-by-step explanation:
This is because 1/5 of 80 is 16.
find the value of x in 5/9 = x/54
Answer:
[tex] \large \sf \: x=30[/tex]
Step-by-step explanation:
Let's solve your equation step-by-step.
5/9 = x/54
Step 1: Cross-multiply.
5/9 = x/54
(5)*(54)=x*(9)
270=9x
Step 2: Flip the equation.
9x=270
Step 3: Divide both sides by 9.
9x/9 = 270/9
x=30
Find the measure of the missing angles.
Answer:
x=26, y=90
Step-by-step explanation:
This is what I did,
I knew that y = 90 because it is a Right Angle. I subtracted 90 - 64 and that got me = y 26
Write the equation of the line that passes through the point P (0, 0) and is perpendicular to the line y = – 2x + 10.
The equation of the line that passes through the point (0,0) and is perpendicular to the line y=-2x+10 is .
We will be using the concept of slope and equation of straight line for this question. Here it has been said that the line passes through (0,0) which is the origin, so we know the point ([tex]x_{1},y_{1}[/tex]) is (0,0).This point will be required while solving the equation for the straight line. The line is said to be perpendicular to another line given by y=-2x+10. When two lines are parallel their slopes are equal and when two lines are perpendicular the product of their slopes is equal to -1. The slope of a line can be found from the equation of the line by dividing the coeeficient of x by the coefficient of y.
Slope of y=-2x+10 is -2
mx-2=-1⇒m=1/2
equation of a straight line,
[tex](y-y_{1} )=m(x-x_{1} )\\[/tex]
⇒y-0=[tex]\frac{1}{2}[/tex](x-0)
⇒y=[tex]\frac{x}{2}[/tex]
⇒2y=x
⇒2y-x=0
Thus the equation of the line that passes through (0,0) and is perpendicular to y=-2x+10 is 2y-x=0.
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6. A household spend 120 on purchase of a commodity when it price is 6 per unit. When the rises to 10 per unit his total expenditure on this commodity becomes 180.calculate price elasticity of demand by percentage change method.
Therefore, the price elasticity of demand by percentage change method is -0.025.
Given the price of a first commodity (p₁) = 6 rs
the price of a second commodity (p₂) = 10 rs
Expenditure on first commodity (s₁) = 120
Expenditure on second commodity (s₂) = 180
We need to find the quantity as
120 = 6 * Q₁. 180 = 10 * Q₂
Q₁ = 120 / 6 Q₂ = 180 / 10
Q₁ = 20 Q₂ = 18
price elasticity of demand by percentage change method as
Eₐ = P / Q * ΔQ /ΔP
ΔQ = Q₂ - Q₁ = 18 -20 = -2
ΔP = p₂ - p₁ = 10 - 6 = 4
Eₐ = 6 / 120 * -2 / 4
Eₐ = - 0.025
Therefore, the price elasticity of demand by percentage change method is -0.025.
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One pizza will feed 5 people. How many pizzas are needed for 40 people?
Answer:
8 pizzas
Step-by-step explanation:
Find the domain of f(x) and the interval.
f(x)=√x² - 2x +48
Answer:
Step-by-step explanation:
go pathways gives all the answers
40 Members of arwick youth club go on a trip to a leisure centre they go in minibuses that can each seat up to 15 people. It costs £30 for each minibus and £150 for the group to have use of the leisure centre. How much will the trip cost per person
The trip cost per person is 6 pounds.
What is a unit rate?Unit rate is the ratio of two different units, with the denominator as 1.
It means a rate for one of something.
We have,
Total members = 40
Each minibus cost = 30 pounds
Leisure centre cost = 150 pounds
Each minibus can carry = 15 people
The number of minibusses needed to carry 40 members:
= 40 / 15
= 2.67
= 3 minibusses.
This means we need 3 minibusses to carry 40 members.
Now,
The total cost for the trip:
= 150 pounds + 3 x 30 pounds
= 150 + 90
= 240 pounds
The cost per person:
= 240 / 40
= 6 pounds
Thus the trip cost per person is 6 pounds.
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3=
X/
3
One step equations with positive whole number
How much colder was Tuesday then Saturday? if
+5 degree.
Formula for Length Change due to Thermal Expansion: The formula for calculating the change in length of a substance due to thermal expansion is ΔL=αLΔT Δ L = α L Δ T where L is the original length of the substance and ΔT is the change in temperature of the substance either in degrees Celsius or in Kelvin.
For comparision of temperature -
Subtract the final temperature from the starting temperature to find the difference. So if something starts at 50 degrees Celsius and finishes at 75 degrees C, then the change in temperature is 75 degrees C – 50 degrees C = 25 degrees C.
Given data
temperature of tuesday = 55 degree
temperature of saturday = 60 degree
Difference between temperature = 60 -55 = 5 degree.
Hence, 5 degree more colder was Tuesday then Saturday.
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Question
Consider the following two loans for Po = $15,000.
• Loan A: 5 year loan, annual interest rate of 8%, monthly repayments of $304.15.
Loan B: 3 year loan, annual interest rate of 11%, monthly repayments of $491.08.
Calculate the absolute difference between the total interest paid on both loans. Give your answer to the nearest ten dollars.
Do not include the dollar sign in your answer
Answer:
570
Step-by-step explanation:
570
The absolute difference that is between the loans paid as 570
How to solve for the absolute differenceWe have the following details:
Po = $15000
loan a 5 year loan, interest = 8 percent and repayments = 304.15 dollars
Loan b
3 year loan, interest = 11 percent repayments = $491.08
Total number of repayments = 5 x 12 = 60
Total repayments = 304.15 dollars x 60
= $18249
The total interest that is paid for A would be
$18249 - $15000
= $3249
For the second loan
Total number of repayments = 3 x 12 months = 36
Total repayment = 36 x 491.08 = $17678.88
The total interest for the loan B would be: $17678.88 - $15,000
= $2678.88
Then the absolute difference between the paid loan would be
$3249 - $2678.88 = 570.12
Hence we would have the absolute difference that is between the loans paid as 570.
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translation: (x,y) →(x - 5, y + 1)
Z(−3, –4), K(−2, −1), (0, -1)
The translation of the points as Z' ( - 8 , - 3 ), K' ( - 7 , 0 ) and K' ( - 5 , 0 ).
We are given the translation as:
(x , y) → (x - 5 , y + 1)
Now we have some points:
Z (−3, –4)
K (−2, −1)
M (0, -1)
We need to translate these points.
For Z (−3, –4), we get the translation as:
Z (−3, –4) = Z' ( - 3 - 5 , - 4 + 1)
Z (−3, –4) = Z' ( - 8 , - 3 )
For K (−2, −1), we get the translation as:
K (−2, −1) = K' ( - 2 - 5 , - 1 + 1)
K (−2, −1) = K' ( - 7 , 0 )
For M (0, -1), we get the translation as:
M (0, -1) = K' ( 0 - 5 , - 1 + 1)
M (0, -1) = K' ( - 5 , 0 )
Therefore, we get the translation of the points as Z' ( - 8 , - 3 ), K' ( - 7 , 0 ) and K' ( - 5 , 0 ).
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On the weekdays a grocery store has 14301 customers and on the weekends the grocery store has 11856 customers . How many more customers does the grocery store have on weekdays than on weekends?
Answer:
2445
Step-by-step explanation:
it would have 2445 more costumers
Answer:
2445
Step-by-step explanation:
Subtract.
14301 - 11856 = 2445 more people on weekdays
What are the solutions to –24x – 24 = x3 + 8x2?
Answer:
–24x – 24 = x3 + 8x2
Step-by-step explanation:
-24x-24=x^3+8x^2
x^3+8x^2+24=-24x-24+24
x^3+8x^2+24=-24x
x^3+8x^2+24+24x=-24x+24x
x^3+8x^2+24x+24=0
Answer: x=-2
Step-by-step explanation:
[tex]-24x-24=x^3+8x^2\\-24x-24+24=x^3+8x^2+24\\-24x=x^3+8x^2+24\\-24x+24x=x^3+8x^2+24+24x\\0=x^3+8x^2+24x+24\\x^3+8x^2+24x+24=0\\x^3+8x^2+12x+12x+24=0\\(x)(x^2+8x+12)+(12)(x+2)=0\\(x)(x^2+2x+6x+12)+(12)(x+2)=0\\(x)((x)(x+2)+6(x+2))+(12)(x+2)=0\\(x+2)((x)(x+6)+12)=0\\ (x+2)(x^2+6x+12)=0\\x+2=0\\x+2-2=0+(-2)\\x=-2\\x^2+6x+12=0\\D=(-6)^2-(4)(1)(12)\\D=36-48\\D=-12\\Hence,\\The\ equation\ has\ no\ valid \ roots\\Thus,\\x=-2[/tex]
This week Andrei got a promotion at work that came with a 2 % pay increase. If now his monthly salary is $ 1683 , how much was he making before the raise?
Enter your answer as a decimal. If needed, round to the nearest penny. Do not use commas.
1683 доллара - 102% . Найдем 1 процент и умножим его на 100%, тем самым получив ответ:
1) 1683 / 102 = 16.5 доллара - 1 % от всей зарплаты
2) 16.5 * 100 = 1650 - изначальная сумма, которую получал Андрей до повышения.
Ответ : 1650 $
Michael grabs a marble from a bag. There are 5 green marbles and 1 red marble. If he grabs the red marble he loses everything he bet on. The marbles are not put back into the bag. The max amount of times Michael can bet on the same game is 4. If he bets 300 and wins 578 (having 278 as winnings), he has the choice to bet again with everything he earned for 682. Then he has the choice to do so again for 945, then 1312 at max. At what point in the game should Michael stop playing to gain the most given the percent of risk of losing the game? What point in the game is the least beneficial for Michael's gains?
First bet (300 -> 578)
Second bet (578 -> 682)
Third bet (682 -> 945)
Fourth bet (945 -> 1312)
If Michael wins every round he would go from 300 to 1312. If he loses, he doesn't gain any of the rewards and is 300 in debt.
Using the expected value of a discrete distribution, it is found that:
Michael should stop playing the game after the first round.The fourth round is the least beneficial round for Michael.What is the mean of a discrete distribution?The expected value of a discrete distribution is given by the sum of each outcome multiplied by it's respective probability.
For the probabilities, we consider that it is given by the number of desired outcomes divided by the number of total outcomes.
For one bet, the distribution is given as follows:
P(X = 578) = 5/6 (5 green marbles out of 6).P(X = -300) = 1/6.Hence the expected value is given by:
E(X) = 578 x 5/6 - 300 x 1/6 = $431.67.
For two bets, the distribution is given as follows:
P(X = 682) = 5/6 x 4/5 = 2/3.P(X = -300) = 1/3.Hence the expected value is given by:
E(X) = 682 x 2/3 - 300 x 1/3 = $354.67.
For three bets, the distribution is given as follows:
P(X = 945) = 5/6 x 4/5 x 3/4 = 1/2.P(X = -300) = 1/2.Hence the expected value is given by:
E(X) = 945 x 1/2 - 300 x 1/2 = $322.5.
For four bets, the distribution is given as follows:
P(X = 1312) = 5/6 x 4/5 x 3/4 x 2/3 = 1/3.P(X = -300) = 2/3.Hence the expected value is given by:
E(X) = 1312 x 1/3 - 300 x 2/3 = $237.33.
Hence, considering the greatest and the smallest expected values, we have that:
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A support pole for an ancient structure is found to have one-sixth of the carbon-14 of a modern, living tree. How long ago did the tree used to make the support pole die? Give your answer to the nearest whole number. (Assume that half-life of carbon-14 is 5770 years.)
14912 years ago, the tree that was used to kill the support pole died which is one-sixth of the carbon-14 of a modern, living tree.
What are the properties of logarithms?There are four basic properties of logarithms:
logₐ(xy) = logₐx + logₐy.
logₐ(x/y) = logₐx - logₐy.
logₐ(xⁿ) = n logₐx.
logₐx = logₓa / logₓb.
One-sixth of a modern, living tree's carbon-14 is present in an ancient structure.
Assume that the half-life of carbon-14 is 5770 years
As per the given condition, the expression would be
[tex]A(t) = A_o}\dfrac{1}{2} ^{(\frac{t}{5770} )}\\A(t) = (0.167)A_o}[/tex]
[tex](0.167)A_o} = A_o}\dfrac{1}{2} ^{(\frac{t}{5770} )}[/tex]
[tex](0.167) = \dfrac{1}{2} ^{(\frac{t}{5770} )}[/tex]
Take the logarithms of both sides to get:
[tex]log(0.167) =log \dfrac{1}{2} ^{(\frac{t}{5770} )}[/tex]
Using logₐ(xⁿ) = n logₐx.
⇒ log 0.167= (t/5770) log (0.5)
⇒ log 0.167/ log (0.5)= (t/5770)
⇒ 3 = (t/5770)
⇒ t = 3 × 5770
⇒ t = 14912
Hence, 14912 years ago, the tree that was used to kill the support pole died.
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What is the domain of f(x) = 7/(x-10) - 7
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Here we go ~
For the given function :
[tex]\qquad \sf \dashrightarrow \: f(x) = \dfrac{7}{x - 10} - 7[/tex]
f(x) is defined for all real values of x, except the value of x for which the denominator becomes 0, because if denominator is 0, the function at that instant will be undefined.
that is : f(x) is not defined when :
[tex]\qquad \sf \dashrightarrow \: x - 10 = 0[/tex]
[tex]\qquad \sf \dashrightarrow \: x = 10[/tex]
Hence, f (x) is defined for all real values of x except 10
It can be represented as :
[tex]\qquad \sf \dashrightarrow \: f(x) : x \in R \sim \{10 \}[/tex]
Helpp??
A playground has 2 slides,
3 swings, and monkey bars.
What's the probability that a kid
will decide to use a slide if they
pick at random?
How to solve this problem? -2x + 4 < 16
Answer:
the answer is 7+1-7+0/xx{12
Step-by-step explanation:
the answer above stated is correctly corrected correct
-1.12345...
rational, irrational and or real number?
Answer: Irrational Number
Step-by-step explanation: It's Irrational because it cant be represented as a simple fraction.
Dots sells T-shirts ($7) and shorts ($9). In April, total sales were $572. People bought 5 times as many T-shirts as shorts. How many T-shirts and shorts did Dots sell?
Dots sold 65 T-shirts and 13 shorts
How to calculate the number T-shirts and shorts ?let the x represent the number of T-shirts and y and shorts
7x + 9y= 572.......equation 1
x= 5y........equation 2
substitute 4y for x in the equation
7(5y) + 9y = 572
35y + 9y= 572
44y= 572
y= 572/44
y= 13
substitute 13 for y in equation 2
x= 5(13)
x= 65
Hence there 65 T-shirts and 13 shorts
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A 13 foot ladder is leaning on a wall. the bottom of the ladder has a diatance of 5 feet from the base of the wall.
What is the distance, in feet, between the ground and the top of the lafder?
Answer:
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Determine whether or not the distribution is a probability distribution and select the reason(s) why or why not. X 0 1 2 P(X) 0 1/3 2/3 Select all that apply: The given distribution is a probability distribution, since the probabilities lie inclusively between 0 and 1. The given distribution is not a probability distribution, since at least one of the probabilities is greater than 1 or less than 0. The given distribution is a probability distribution, since the sum of probabilities is equal to 1. The given distribution is not a probability distribution, since the sum of probabilities is not equal to 1.
The distribution is a probability distribution, and the reasons are
The given distribution is a probability distribution, since the probabilities lie inclusively between 0 and 1. The given distribution is a probability distribution, since the sum of probabilities is equal to 1. How to determine whether the distribution is a probability distribution?The probability distribution is given as:
X 0 1 2
P(X) 0 1/3 2/3
From the above table of probability distribution, we can see that each probability value is between 0 and 1 (inclusive)
Also, the sum of probabilities is 1
i.e. 0 + 1/3 + 2/3 = 1
Hence, the distribution is a probability distribution, and the reasons are
The given distribution is a probability distribution, since the probabilities lie inclusively between 0 and 1. The given distribution is a probability distribution, since the sum of probabilities is equal to 1.Read more about probability distribution at
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(3x 3 +4x 2 )+(3x 3 −4x 2 −9x)
Answer:
9x
Step-by-step explanation:
=9x+8x+9x-8x-9x
=9x
Determine the point(s), if any, at which the graph of the function has a horizontal tangent line. Y= 1/2x^2 +7x (Give the answer as x,y coordinates)
Answer:
i don't know how to attach the file
What are the slope and the y-intercept of the linear function that is represented by the graph?
Answer:
Step-by-step explanation:
it would be great if u had the image, but at least I can give some advice: use the method of rise over run to find the slope. use 2 points and count the number of squares "rising" and turn right and count the number of squares "running". left and down if it's going downward.
for the y intercept, find the x that equals 0. your coodinate should look like this: (0, *insert y*)
A spring with a spring constant of 1N/cm is stretched and has elastic potential energy of 30 j. Calculate the extension experienced by
the spring.
Give your answer to 2 decimal places.
Th elastic potential energy of two decimal places is k=60×1^2 N/M
Given that,
Spring has a potential energy of =30 J
we know that,
Energy of a spring=1/2 kx^2
here, x=1cm
x^2=0.01m
30=1/2 kx^2
30=1/2 k(0.01)^2
60=k(0.01)^2
k=60/(0.01)^2
k=60×1^2N/M
Hence the potential energy of two decimal places is k= 60×1^2 N/M
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Will mark u brainliest Question
Question
What is the turning point of the graph of f(x)=|x−2|+3?
(2, 3)
(−3, 2)
(3, 2)
(2, −3)
The turning point of the function f(x) = |x-2| + 3 will be (3, 2).
Here,
We have to find the turning point of the graph of function,
f(x) = |x−2|+3
What is an absolute function?
The non-negative value of real number without regard to its sign is known as its absolute value.
Now,
The absolute function is;
f(x) = |x+3| -2.
Since, When we plot the graph of the absolute function f(x) = |x+3| -2,
it will give two straight lines which is shown in the graph.
Clearly, The graph of the function changes its position at the coordinate
(3, 2).
Therefore, The absolute function having its turning point at the coordinate ( 3, 2).
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The arcade charges 24 tokens to play 6 games.
How many tokens will 10 games cost?
Answer: 40
Step-by-step explanation:
if 6 games = 24 tokens
then 1 game = 24/6=4
so 10 games = 4*10=40
Answer:
40
Step-by-step explanation:
24/6 = 4 tokens per game
4*10 games = 40