Answers
Fourteen divided by a number is 14/x, but we're looking for a number divided by 14 which is x/14.
You should use minus rather than less than because less than implies the use of the < symbol.
Related Questions
A 18 gram sample of a substance that’s used to detect explosives has a k-value of 0.1226
Find the substance’s half-life in days
Round your answer to the nearest tenth
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Initial mass = 18 g
k-value = 0.1226
The mass at time t (days) is
[tex]m(t)=18e^{-0.1226t}[/tex]
At half life, m = 18/2 = 9 g.
The time for half life is given by
[tex]9 = 18e^{-0.1226t}[/tex]
Therefore
ln(1/2) = -0.1226t
Hence obtain
t = ln(1/2) / -0.1226
= 5.654 days
Answer: 5.7 days (nearest tenth)
Answer: 5.7
I just did the test and got it correct
A binomial is defined as what?
Answers
In the diagram, what is the length of arc AB?
A. 4.2 cm
B. 12.4 cm
C. 13.9 cm
D. 11.8 cm
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Answer:
Step-by-step explanation:
x plus 20% = 1980
what is x
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x + 0.2x = 1980
1.2x = 1980
x = 1980/1.2
x = 1650 ← unknown number
Alex is making a rectangular garden and wants a fence around it. He wants the length of the garden to be 3 feet longer than the width. 150 feet of fence is all he can afford. What is the greatest possible width he can have for his garden?
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A house is advertised as having 1 420 square feet under roof. what is the area of this house in square meters? (a) 115 m 2
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Final answer:
To convert square feet to square meters, we multiply the number of square feet (1,420) by the conversion factor (0.092903), resulting in approximately 132 square meters as the area of the house.
Explanation:
To convert the area of a house from square feet to square meters, we use the conversion factor where 1 square foot equals 0.092903 square meters. The house in question has 1,420 square feet, so we multiply this number by the conversion factor to find the area in square meters.a
1,420 square feet * 0.092903 square meters/square foot = 131.92186 square meters.
We can round the final result to the nearest whole number, which gives us approximately 132 square meters as the area of the house.
cos y = 0.02034 ; y°=?
Answers
y°= cos^-1 (0.02034)
= 88.834°
That's it
Which one of the following characteristics of a solid is of concern to geometry? A. Weight B. Shape C. Color D. Substance
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One fish is 4 feet below sea level. Another fish is 3 feet below sea level. write each position as an integer. Which integer is greater?
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Hope this helps!
Is the probability of (AnB) the same as P(A) x P(B)? If not, how can P(AnB) be calculated?
Answers
P(AnB) the same as P(A) x P(B)
When A and B are independent events
A point in the form (x, y) has two dimensions. is this correct
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A point has no dimension or you could say zero dimensions.
A point in the form (x, y) is simply a location on a plane.
Line segment AB has a length of 3 units. It is translated 2 units to the right on a coordinate plane to obtain line segment A′B′. What is the length of A′B′?
1 unit
2 units
3 units
5 units
Answers
Answer:
It is still 3.
Step-by-step explanation:
We only translated it, so we just moved it over to the side. Translating cannot take away length.
Which equations have no solution? Check all that apply.
– |x| = 0
|x| = –15
– |x| = 12
– |–x| = 9
– |–x| = –2
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The length of a rectangle is three times its width. if the perimeter of the rectangle is 98 cm , find its area.
Answers
8m = w
l = 3w = 3 (8m) = 24
a = l * w = 24 m * 8 = 192
a = 192
Shaun and Trudy are selling raffle tickets. So far, Shaun has sold x tickets. Trudy has sold 3 more tickets than half the number of tickets that Shaun sold. Which expression represents the number of raffle tickets that Shaun and Trudy have sold altogether?
Answers
T=s/2+3, using s from above we have:
T=x/2+3
t=T+S
t=x+x/2+3 make all term have a common denominator of 2
t=(2x+x+6)/2
t=(3x+6)/2 or if you prefer
t=1.5x+3
Answer:
3/2x+3
Step-by-step explanation:
What is the discriminant of 3x2-10x=-2 ?
Answers
The discriminant of [tex]3x^2-10x=-2[/tex] is 76
To find the discriminant of [tex]3x^2-10x=-2[/tex], we have to recall the quadratic formula.
Further ExplanationThe formula of the quadratic equation can be expressed as [tex]ax^2+bx+c=0[/tex] and discriminant also expressed as [tex]D=b^2-4ac[/tex]
Using the quadratic formula, the given question can be expressed as:
[tex]3x^2-10x+2=0[/tex]
Where a = 3, b = -10, and c = 2
If we substitute the values, then the discriminant would be:
Recall the discriminant is [tex]D=b^2-4ac[/tex]
Therefore, we have
[tex]D=(-10)^2-4(3)(2)[/tex]
[tex]D=100-24[/tex]
[tex]D=76[/tex]
Thus, the discriminant of [tex]3x^2-10x=-2[/tex] is 76.
Discriminant is very helpful in quadratic equation as it helps reveals the number of real solutions to a given quadratic equation. In other words, it helps you to solve quadratic equation.
While discriminant only tells only reveals the number of real solutions, it doesn’t reveal what the solutions are. The determinant would only give you hint as regards the number of real solution to look for.
LEARN MORE:
Find the discriminent of the equation 3x2- 10x https://brainly.in/question/11507036Find the discriminent of the equation 3x2+10x+3=0 https://brainly.in/question/5897002KEYWORDS:
discriminantquadratic formula3x2-10x=-2solutionquadratic equationWords that came from the same ancestral language and originated from the same word are called
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In linguistics, cognates are words that have a common etymological origin. These are words in two languages that share a similar meaning, spelling, and pronunciation. For an instance, English words have lots of related words in Spanish.
The words that came from the same ancestral language and originated from the same word are called COGNATE WORDS.
What is ancestral language?In the historical linguistics tree model, a protolanguage is a hypothetical ancestral language from which several documented languages are thought to have evolved, constituting a language family. In most cases, protolanguages are unattested or, at most, only partially attested.
The languages of Norway, Sweden, Denmark, and Iceland descend from Old Norse. Numerous Indian languages, including Bengali, Hindi, Marathi, and Urdu, have their roots in Sanskrit. Each of these ancestral languages had a single common progenitor further back in time.
The term "cognates" in linguistics refers to words with the same etymological background. These are words that have the same pronunciation, spelling, and meaning in two different languages. For instance, Spanish has many words that are similar to English words.
Therefore, Words that came from the same ancestral language and originated from the same word are called COGNATE WORDS.
To know more about ancestral language:
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What is the domain of f(x) = 3^x – 2?
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Answer: In fact tis D. Is all real numbers
Step-by-step explanation: your welcome?
WILL GIVE A BRAINLIEST PLEASE HELP!!
Write the first 4 terms of the sequence if a(4)=36 and a(n)=1/2a(n-1)+12.
A.
36, 30, 27, 25.5
B.
120, 72, 48, 36
C.
456, 216, 96, 36
D.
36, 48, 72, 120
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1/2 * 3a + 12 = 36
3/2 a = 24
a = 16
so first term = 1/2 * 16 (1 - 1) + 12 = 12
which is different from any of the choices.
you sure you have the question right? Or maybe i misread it.
Help me with these please!!
Answers
Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that models the relationship between time (x) and water volume (y) in slope-intercept form.
Answers
The equation that would best represent the relationship between the given parameters is,
y = 100 - 2x
where y is the volume of water after x days.
The factory produces sewing machine parts. During one week, they produced 345, 298, 452 and 388 parts per day.
What was the average number of parts produced each day?
Answers
(345 + 298 + 452 + 388) / 4 = 1483/4 = 370.75 per day <=
Answer:
The produced parts average each day were 370.75.
Step-by-step explanation:
We have to find the average of parts produced by day, to calculate it we have sum all the parts produced by day and divide it by the number of days (4 days). In the equation we have:
[tex]Average=\frac{345+298+452+388}{4}=\frac{1483}{4}=370.75[/tex]
The produced parts average each day were 370.75.
Find the value of each variable for the right triangles. Make sure all answers are in reduced radical from. Shoe your work.
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a.
[tex] t^{2}+ 12^{2}= 13^{2} [/tex]
instead of taking the square of 12 and 13, , take 12 squared to the right side and apply the difference of squares formula: [tex] a^{2}- b^{2}=(a-b)(a+b)[/tex]
[tex]t^{2}= 13^{2}- 12^{2}=(13-12)(13+12)=1*25[/tex]
so t is square root of 25, which is 5
b.
[tex] a^{2}+9 ^{2} = 12^{2} [/tex]
[tex]a^{2}= 12^{2} -9 ^{2}=(12-9)(12+9)=3*21=3*3*7 [/tex]
[tex]a= \sqrt{3*3*7}=3 \sqrt{7} [/tex]
b.
[tex] 6^{2} + 9^{2} = x^{2} [/tex]
[tex]36+81= x^{2} [/tex]
here we can factorize 9, to work with small numbers:
[tex]9(4+9)= x^{2}[/tex]
[tex]9*13= x^{2} [/tex]
[tex] x^{2} =3*3*13[/tex]
[tex]x= \sqrt{3*3*13}=3 \sqrt{13} [/tex]
What positive number is the same as its reciprocal?
Answers
The only positive number that is the same as its reciprocal is 1. This is achieved by setting up the equation x = 1/x and solving it.
Explanation:In mathematics, a number and its reciprocal are the same when the number is 1. If you denote the mysterious number we are looking for as 'x', then its reciprocal would be 1/x. Since the number and its reciprocal are the same, we can set up the equation x = 1/x. Solving this equation, we cross multiply to get x^2 = 1. The positive solution to this equation is x = 1, which confirms that the only positive number that is the same as its reciprocal is 1.
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What is the amplitude, period, and phase shift of f(x) = -3 cos (4x + pi) +6?
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(x) = -3 cos(4x + π) + 6
The amplitude is |-3| = 3
If T is the period, then
(2π)/T = 4
4T = 2π
T = π/2
The period is π/2.
The phase shift is -π/4.
The vertical shift is 6.
A graph of the function is shown below.
Answer:
Amplitude = 3.
Period = π/2.
Phase shift = -π/4
The amplitude, period, and phase shift are 9, [tex]\dfrac{\pi }{2} [/tex] and [tex]\dfrac{\pi }{4} [/tex] respectively.
Periodic functionA periodic function is a function that repeats itself after a definite time interval.
Given[tex]f(x) = -3cos(4x+\pi ) +6[/tex]
The cosine function is a periodic function that repeats itself in the interval of [tex]2\pi [/tex].
Step by step explanationFor maximun amplitude
[tex]cos(4x+\pi )=-1\\ [/tex]
Then
[tex]f(x)=3+6\\ f(x)= 9[/tex]
For time period
The cosine function repeats itself in the interval of [tex]2\pi [/tex].
[tex]\begin{aligned} \frac{2\pi }{T} &= 4 \\\\ T &=\dfrac{\pi }{2}\\ \end{aligned}[/tex]
For phase shift
Phase is [tex]\dfrac{\pi }{4} [/tex]
Thus, the amplitude, period, and phase shift are 9, [tex]\dfrac{\pi }{2} [/tex] and [tex]\dfrac{\pi }{4} [/tex] respectively.
To more about the Period function link is given below.
https://brainly.com/question/8636691
- Bruce added some chlorine to the water in a pool. The chlorine evaporated at a fixed rate every week... ... The table below shows the amount of chlorine f(n), in ounces, that was left in the pool after n weeks: n f(n) 1 54 2 27 3 13.5 4 6.75 Which function best shows the relationship between n and f(n)?.
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To solve this problem, let us first remember that the formula for rate is:
rate = f (n) = A (r)^(n-1)
Where,
A = the 1st term
r = fractional rate of evaporation
n = number of terms
Now let us calculate for the fraction rate of evaporation, r. Since it is stated that the evaporation is happening at a fixed rate, therefore we can use any two given f (n) values to find for r. In this case, let us use when n=1 and 2.
r = 27 / 54
r = 0.5
The first term in the series is when n = 1 and that is:
A = 54
Therefore substituting all known values to the equation:
f (n) = 54 (0.5)^(n-1) (ANSWER)
Use a normal approximation to find the probability of the indicated number of voters. in this case, assume that 114 eligible voters aged 18-24 are randomly selected. suppose a previous study showed that among eligible voters aged 18-24, 22% of them voted. probability that exactly 27 vote
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Where n is the number of samples. If the value of n is huge, calculating binomial coefficient can be difficult and calculator won't be able to perform the nCr calculation for a big value of n (try ⁶⁰⁰C₁₂₃ on the calculator).
If p, which is the probability, is close to 0.5, the binomial distribution will be fairly symmetric.
We have n = 114 and p = 22% = 0.22
We first need to approximate X by Y ≈ N(np, np(p-1))
np = 114×0.22 = 25.08
np(1-p) = 114×0.22×0.78 = 19.6
Therefore, Y ≈ N(25.08, 19.6)
and since the standard deviation, б = √np(1-p) = √19.6
We then have, Y≈N(25.08, (√19.6)²)
We aim to find the probability of X is exactly 27, mathematically written as P(X=27)
Applying the continuity correction we have P(26.5<Y<27.5) ⇒ This correction, in other words, is applying a range to X that will definitely include the value of X=27
The next step is standardising
We have the mean, μ=25.08 and σ=√19.6
P(26.5<Y<27.5) = P([tex] \frac{26.5-25.08}{ \sqrt{19.6} } [/tex]<Z<[tex] \frac{27.5-25.08}{ \sqrt{19.6} } [/tex])
P(26.5<Y<27.5) = P(0.32<Z<0.55)
P(26.5<Y<27.5) = P(Z<0.55) - [1 - P(Z<0.32)] ⇒ Read the values for these z-score on the z-table
P(26.5<Y<27.5) = 0.7088 - [1-0.6255]
P(26.5<Y<27.5) = 0.3343
Find the measures of two angles, one positive and one negative, that are coterminal with pi divided by seven.
Answers
you simply come "clockwise" to get the negative angle.
and to get the positive angle, simply go around 2π and then add π/7 to it.
If two lines are perpendicular, then they form?
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hope this helps:)
HELP
If f(x)=12x+4, then f^-1(x)=?
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I hope that this helps you!