The present age of ken and tammy are in the ratio of 2:5. In 6 years from now the ages will be in the ratio of 4:7. What are their present ages?
Answers
Answer:
Step-by-step explanation:
k=2
t=5
2+6=4 6=2 1=3
2=6
5=15
Now their ages are 6:15
Related Questions
7/15 + 9/15 + 4/15!!!!!!
Answers
Answer:
4/3 or 1.333333
Step-by-step explanation:
A biology student wanted to determine if using fertilizer would promote plant growth. The student randomly selected 20 plants and randomly assigned 10 of them to a large square container and the other 10 to a different large square container. Both containers had the same amount of soil and received the same amount of water and light. One container also received fertilizer and the other container did not.
Is this a valid experimental design?
Yes, each plant was randomly assigned to the large containers.
Yes, the variables not being measured—soil, water, and light—were controlled.
No, both containers did not receive the fertilizer.
No, the experiment did not use replication of the experimental units.
Answers
This is a valid experimental design because each plant was randomly assigned to the large containers.
Is this a valid experimental design?
An experiment is an attempt to determine the effect of the independent variable on the dependent variable. The independent variable is the variable that is changed in the experiment.
In this experiment, we can see that it was carefully controlled and the assignment of the groups was completely random. The both groups were exposed to the same conditions except for the treatment. This can be said to be a valid experimental design.
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Answer:
D. No, the experiment did not use replication of the experimental units.
Step-by-step explanation:
a line with a y-intercept of 4 passes through the point (14, -3). it also passes through point (x, -8). what is the x coordinate for that point?: * a) 8 b) 24 c) -24 d) 6 e) -6
Answers
The x-coordinate for the point (x, -8), if Y-intercept is 4, and the coordinates of the point is (14, -3), is 24, so option B is correct.
What is line?
An object having an endless length and no width, depth, or curvature is called a line. Since lines can exist in two, three, or higher-dimensional environments, they are one-dimensional things.
Given:
Y-intercept = 4,
Coordinates of point = (14, -3), (x, -8)
Calculate the line equation as shown below,
y = m x + 4
Here, m is the slope,
Put point (14, -3) in the equation,
-3 = m × 14 + 4
m = -7 / 14
m = -1 / 2
Hence, the equation of a line is,
y = -1/2 x + 4
Put point (x, -8),
-8 = -1/2 x + 4,
-12 = -1/2x
x = 24
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During the 2008 - 2009 financial crisis, the GDP of the USA reduced from $14.72 trillion in 2008 to $14.42 trillion in 2009. What is the percentage change between these two years? around your answer to the nearest hundredth of a percent.
Answers
The percentage change in GDP is 2.04%
Percentage ChangePercentage Change is the difference coming after subtracting the old value from the new value and then divide by the old value and the final answer will be multiplied by 100 to show it as a percentage. Generally, to convert a fraction into a percent, we multiply it by 100.
The formula of percentage change is given as
Percentage change =[ (New increase - old value) / old value] * 100
Percentage change = [(14.72 - 14.42) / 14.72] * 100
Percentage change = 2.04%
In this case, there is a percentage decrease of 2.04%
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0,0 as center of dilation 1/4 and a =10,6
Answers
The new coordinates after the dilation with scale factor 1/4 is
a' = (5/2 , 3/2)
To get the new coordinates when the point is dilated is to multiply the scale factor with the coordinates of the point.
According to the question we have been given that
center of dilation = (0,0)
Scale factor = 1/4
coordinate of the point, a = (10,6)
To get the new coordinates we will multiply the given coordinates by the scale factor that is ,
a' = 1/4*(10,6)
= (10*1/4 , 6*1/4)
a' = (5/2 , 3/2)
Hence the new coordinates after the dilation is a' = (5/2 , 3/2)
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Given f(x) = x² - 5x - 6 and g(x) =
x² - 6x, what are the domain restrictions
for (-)(x)?
A) x # +6
B) x = 0
C) x = 0,6
D) x = -2,6
Answers
The domain restrictions for (f/g)(x) are (c) x = 0, 6
How to determine the domain restrictions for (f/g)(x)?From the question, we have the following parameters that can be used in our computation:
f(x) = x² - 5x - 6
g(x) = x² - 6x
The composite function (f/g)(x) is calculated as
(f/g)(x) = f(x)/g(x)
substitute the known values in the above equation, so, we have the following representation
(f/g)(x) = (x² - 5x - 6 )/(x² - 6x)
For the domain restriction, we have
x² - 6x = 0
When solved, we have
x = 6 or x = 0
Hence, the domain restrictions for (f/g)(x) are (c) x = 0, 6
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Question
Given f(x) = x² - 5x - 6 and g(x) = x² - 6x, what are the domain restrictions
for (f/g)(x)?
A) x = +6
B) x = 0
C) x = 0,6
D) x = -2,6
You are preparing an IV order for a hypokalemic patient and they require VDA added to their IV minibag. You need the 10mg/2mL stock solution. Which of the following do you use if it is available as 0.5%, 1:10, 1:5, and 5%?
Answers
The option that should be used for the IV order for the hypokalemic patient would be A. 0. 5 %.
Which VDA should be added ?The concentration of the stock solution signifies the proportion of potassium chloride within the total volume or quantity of the solution. 0.5% concentration implies that 0.5 grams of potassium chloride is present within 100 mL of the solution.
The 0. 5 % solution is already the correct concentration and can be added directly to the IV minibag. Selecting the appropriate concentration necessitates careful consideration of the desired potassium chloride dose for the patient and the desired volume to be incorporated into the IV minibag.
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PLEASE HELP GEOMETRY ASAP 50 POINTS! REAL ANSWERS ONLY OR WILL BE REPORTED AND DELETED! PLEASE SHOW STEPS!
Answers
9514 1404 393
Answer:
x = 80y = 80Step-by-step explanation:
The external angle at A is half the difference of the arcs it intercepts. The inscribed angle y is half the measure of arc CD. The sum of the arcs of a circle is 360°. These relations let us write some equations.
(BC -x°)/2 = ∠A
BC + CD + x° = 360°
y° = CD/2
__
Given that BC = 120° and ∠A = 20°, we can use the first equation to find x.
(120 -x)/2 = 20
120 -x = 40 . . . . . multiply by 2
120 -40 = x = 80 . . . . add x-40
Using known values in the second equation gives ...
120 +CD +80 = 360
CD = 160 . . . . . . . subtract 200
Then y is found from the third equation.
160/2 = y = 80
(111)-8,5
3.
Write the following integers in ascending order (smallest to biggest).
Do you
(i) -5,2,1,-8
(ii) -4,-3, -5,2
(iii) -10,-15,-7
Answers
Answer:
(I) -8, -5, 1, 2
(ii) -5, -4, -3, 2
(iii) -15, -10, -7
Step-by-step explanation:
You can think about what a number line looks like to solve problems like this, for example a number line that goes from -10 to 10 would look something like this, with smaller numbers on the left and bigger on the right
-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Two hens can lay 2 eggs in 2 minlutes if that is the maximum speed how many hens can lay 500 eggs in 500 minutes
Answers
To determine how many hens are needed to lay 500 eggs in 500 minutes, we divide 500 eggs by the number of eggs laid by each hen in 500 minutes. In this case, 500 eggs divided by 250 eggs per hen equals 2 hens.
So, you would need two hens to lay 500 eggs in 500 minutes at their maximum speed.
the size of an impala population is represented by the function r(t)=10+2cos(pi/6 t), where t is time in months since the beginning of the year and R(t) is measured in thousands. After 3 months, the population is ______ at a rate of _____ thousand per month. Round to 2 decimal places.
Answers
The population of impalas at t = 3 months is decreasing at a rate of \(-(\frac{\pi}{3})\) thousand per month, or approximately -1.05 thousand per month.
What is derivative?The derivative is a mathematical concept that represents the rate of change of a function with respect to its input.
To find the population of impalas after 3 months, we can substitute t = 3 into the given function;
\(R(t)=10+2Cos(\pi t/6)\)
\(R(3)=10+2Cos(\pi *3/6)\)
\(= 10 + 2cos(\pi/2)\) = 10
Therefore, the population of impalas after 3 months is 10,000 (since R(t) is measured in thousands).
To find the rate of change of the population at t = 3 months, we can take the derivative of the function R(t) with respect to t:
\(R(t)=10+2Cos(\frac{\pi t}{6} )\)
\(R'(t)=-\frac{\pi}{3} Sin (\frac{\pi t}{6} )\)
Substituting t = 3 into the derivative, we get:
\(R'(3)=-\frac{\pi}{3} Sin (\frac{\pi}{2} )\\\)
\(= -\frac{\pi}{3}\)
Therefore, the population of impalas at t = 3 months is changing at a rate of \(-(\frac{\pi}{3})\) thousand per month, or approximately -1.05 thousand per month (rounded to 2 decimal places).
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I will give brainliest to the one that helps me the best.
Answers
Answer:
Y-axis is (0,-5)
X-axis is (0,5)
Step-by-step explanation:
Across the Y axis is (-x,y)
Across the X axis is (x,-y)
Answer:
Step-by-step explanation:
Since (0, -5) is already ON the y-axis, the reflected point is (0, -5)
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the y-axis is (-x, y). -0 = 0
(0, -5) reflected across the x-axis is (0, 5)
When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the x-axis is (x, -y). --5 = 5
The midpoint of AB is M=(-1,3). One endpoint is A=(4,-2).
Find the coordinates of the other endpoint, B.
B (?,?)
M(-1, 3)
A (4,-2)
Answers
Answer:
hsnsnzjzhjzzjj727272727nJsjshs
What's the inverse of ƒ(x) = x – 20?
Answers
Therefore , the solution of Inverse function comes out to be of x-20 equals to x+20
What is the inverse symbol?A function f has an inverse function only if for every y in its range there is only one value of x in its domain for which f(x)=y. This inverse function is unique and is frequently denoted by f−1 and called “f inverse.” For an overview into the idea of an inverse function, see the function machine inverse.Steps for finding the inverse of a function fReplace f(x) by y in the equation describing the function. Interchange x and y. In other words, replace every x by a y and vice versa.
Here,
Solve for y.
Replace y by f-1(x).
y=x-20
x=y-20
Solve for y,x = y-20
x+20
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Answer:
ƒ^(-1)(x) = x + 20
Step-by-step explanation:
To find the inverse of the function ƒ(x) = x - 20, we need to switch the roles of x and y and solve for y.
Let's start by replacing ƒ(x) with y:
y = x - 20
Next, swap x and y:
x = y - 20
Now, solve for y by isolating it:
x + 20 = y
Therefore, the inverse of the function ƒ(x) = x - 20 is given by:
ƒ^(-1)(x) = x + 20
really need help with this problem
Answers
Answer:
38.2°
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relevant relation:
Tan = Opposite/Adjacent
In this context, it means ...
tan(A) = CB/AB
tan(x°) = 48/61
The inverse tangent function is used to find the angle when you know its tangent.
x° = arctan(48/61) ≈ 38.2°
_____
Additional comment
On many scientific and graphing calculators, the inverse tangent function is the 2nd function of the tan key. It may be labeled tan⁻¹. Usually, the calculator will have a mode setting that allows you to select the units used for presentation of the angle. You many have to choose degrees if the calculator is giving you a number less than 1.
Answer:
0.78
Step-by-step explanation:
BC = 48
AB = 61
X=?
NOW,
IN ️ ABC
sin x° = BC/AB
sin x° = 48/61
x = 0.78
A CD is on sale for $10.00. The sales tax rate is 6%. How much will the total cost be for the CD
Answers
Answer:
$10.06
Step-by-step explanation:
Tax rate = 6% , convert into 0.06
10 × 0.06 = 0.6
10 + 0.6 = 10.06
What is Shakespeare's name
Answers
Hope this helps!
Answer:
William Shakespeare
Step-by-step explanation:
What is Shakespeare's name?
William Shakespeare
244-33456/3456*345+13.55-2=
Answers
The order of operations (PEMDAS) states that we should perform multiplication and division before addition and subtraction. Using this order, we get:
244 - (33456 / 3456) * 345 + 13.55 - 2
= 244 - 97.02 * 345 + 13.55 - 2
= 244 - 33494.1 + 13.55 - 2
= -33238.55
Therefore, 244-33456/3456*345+13.55-2 = -33238.55.
Tyler's brother earns $14 per hour. The store offers him a 5% increase in wages per hour. After the raise, how much will tyler's brother make per hour?
Answers
After the raise, Tyler's brother will make $14 x 1.05 = $14.70 per hour.
Answer:
14 x 1.05 = 14.70
Step-by-step explanation:
The tape diagram below represents 100%.
100%
?
What percent is represented by the shaded area?
%
Answers
Answer: 50%
Step-by-step explanation:
The shaded portion is half of 100
Answer: 50%
Step-by-step explanation: Since the tape diagram in total represents 100%, and half of the tape diagram is shaded, this means 50% is shaded.
In a survey of 938 U.S. adults, 235 say the phrase "you know" is the most annoying conversational phrase. Let p be the proportion of the population who respond yes. Use the given information to Construct a 90% confidence interval for p.
Answers
Answer:
CI 90% = ( 0.227 ; 0.273)
Step-by-step explanation:
Information from the survey:
sample size n = 938
number of people with yes answer x = 235
proportion of people p = 235/938
p = 0.25 then q = 1 - 0.25 q = 0.75
Confidence Interval 90 % .
CI 90% = ( p ± SE )
CI 90% = ( p ± z(c)*√(p*q)/n)
CI 90 % then significance level is α = 10 % α/2 = 5%
α/2 = 0.05 we find in z-table z (c) = 1.64
√(p*q)/n = √0.25*0.75/938
√(p*q)/n = √0.000199
√(p*q)/n = 0.014
CI 90% = ( p ± z(c)*√(p*q)/n)
CI 90% = ( 0.25 ± 1.64*0.014)
CI 90% = ( 0.25 ± 0.023 )
CI 90% = ( 0.227 ; 0.273)
PLEASE HELP
Select the correct answer from each drop-down menu. Options are (equal to, not equal to)
Answers
Answer:
Not equal to.
Step-by-step explanation:
is it possible for an object to have no (zero) momentum? use the mathematical definition of momentum (p
Answers
Yes, it is possible for an object to have zero momentum. Momentum is defined as function the product of mass and velocity, so an object with zero mass or zero velocity will have zero momentum.
Momentum is a physical property of an object that is equal to the product of its mass and velocity. It is measured in kilogram meters per second (kg m/s) and is a vector quantity, meaning it has both magnitude and direction. In order for an object to have zero momentum, it must have either zero mass or zero velocity. An object with zero mass will always have zero momentum regardless of its velocity, while an object with zero velocity will only have zero momentum if its mass is also zero. An object with nonzero mass but zero velocity still has nonzero momentum if its mass is not zero. Therefore, it is possible for an object to have zero momentum.
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the complete question is
is it possible for an object to have no (zero) momentum? use the mathematical definition of momentum (p) to explain
It is possible for an object to have No (Zero) momentum because Momentum is the product of mass and velocity, so the object with zero mass or zero velocity will have No momentum.
What is Momentum ?
The Momentum of an object is a vector quantity that is defined as the product of the mass and velocity , the unit of measurement if Kg m/s .
So , for the object to have No (zero) momentum, the object must have either zero mass or zero velocity. that means the object with zero mass will always have No (zero) momentum regardless of velocity of the object ,
whereas the object with 0 velocity will only have No (zero) momentum if the mass is also 0 .
Therefore , By the Mathematical Definition of momentum , Yes , it is possible for the object to have No(zero) momentum .
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ASAP please!! What is the best approximation for one of the relative minimums of the
polynomial function graphed below?
Answers
Answer: C
Step-by-step explanation: Brainliest please
What are two factors of the composite number 57 other than 1 and 57? A. 3 and 39 B. 3 and 12 C. 2 and 19 D. 3 and 19
Answers
Answer: D
Step-by-step explanation: 3 goes in to 57, 19 times and 19 goes into 57, 3 times. No other components other than 1 and 59
Answer:
D
Step-by-step explanation:
T4L 2021
WHAT IS 4=34
WHAT IS 4=76
Answers
Answer: Both are algebra expressions
Step-by-step explanation:
Which of the following graphs is decreasing when x > 3?
PLEASE HELP ASAP! EXTRA POINTS!! I BEG HELP ME‼️‼️ (please click the picture and pick one GRAPH) PLEASE
Answers
Answer:
A. X
Step-by-step explanation:
You want to know which graph is decreasing for x > 3.
DecreasingA graph is decreasing when it slopes down to the right. The only graph in the group that has any decreasing portion is graph X. The decreasing part of that graph is to the right of x = 3, where x > 3.
Graph X is the one you want.
__
Additional comment
All the other graphs are increasing everywhere, so aren't even worth any consideration.
what is the soulution of the system? use any method
3y = –1/2x+2
y = –x + 9
(20, –4)
(3, 6)
(10, –1)
(–1, 8)
Answers
Answer:
c
Step-by-step explanation:
10,-1
your welcome
thats the right answer
A rate in which the first quantity is compared to 1 unit of the second quantity
Answers
Answer:
it will compare unit to some quanlity to a different number of units of a different queality.
Step-by-step explanation:
a/b=c/d proportions are two fractions that are equal example: 1/2=2/4
Based on the information in the table, how much will Monique earn if she works 36 hours in a week?
Answers
Answer:
Where is the table?
Step-by-step explanation: