Answer:
5400
Step-by-step explanation:
To form an equation we need to replace the words by letters, let's just use x and y for this.
Let hour = y and bacteria = x
1 hour = 3 bacteria
So this can be written as:
(a) y = 3x
Now we're told that there are 150 bacteria.
Bacteria = 150 and, x will be as well.
(b) x = 150
y = 3x = 3(150) = 450
y = 3x = 3(150) = 450 12y = 450 × 12 = 5400
y = 3x = 3(150) = 450 12y = 450 × 12 = 540013 hours = 5400 bacteria
2.4. Subtract4 84286
Subtract:
\(\begin{gathered} \text{ 484} \\ -286 \end{gathered}\)To perform this subtraction, since 4 is less than 6, borrow 1 from the top number on the left next to 4, we have:
18. If f(x) = arccos(x^2), then f'(x) =
The derivative of f(x) = arccos(x^2) is: f'(x) = -2x / √(1-x^4)
The derivative of f(x) = arccos(x^2), we'll use the chain rule. The chain rule states that the derivative of a composite function is the derivative of the outer function times the derivative of the inner function. In this case, the outer function is arccos(u) and the inner function is u = x^2.
First, let's find the derivative of the outer function, arccos(u). The derivative of arccos(u) is -1/√(1-u^2). Next, we'll find the derivative of the inner function, x^2. The derivative of x^2 is 2x.
Now we'll apply the chain rule. We have:
f'(x) = (derivative of outer function) * (derivative of inner function)
f'(x) = (-1/√(1-u^2)) * (2x)
Since u = x^2, we'll substitute that back into our equation:
f'(x) = (-1/√(1-x^4)) * (2x)
So, the derivative of f(x) = arccos(x^2) is:
f'(x) = -2x / √(1-x^4)
To learn more about Derivative :
https://brainly.com/question/23819325
#SPJ11
the half-life of strontium-90 is 28 years, meaning that after 28 years a given amount of the substance will have decayed to half the original amount. find the exponential decay midel of strontium-90
Answer:i had to
Step-by-step explanation: mb
We measure temperature using a scale that has both positive and negative numbers. On the Celsius
scale, 'O' is the freezing point of water. If it is 22 degrees Celsius, how much colder does it need to get
before water will begin to freeze?
Answer:
22 degrees
Step-by-step explanation:
t multiplied 3/4=8/9
well what do you want to know???
Answer:t=32/27
Step-by-step explanation:
3/4t=8/9
(4/3)(3/4)t=(4/3)(8/9)
t=32/27
Hope it helps
The point P = (12,-9) on the circle x² + y² =2 is also on the terminal side of an angle 0 in standard position. Find sin 0, cos 0, tan, csc 0, sec 0, and cot 0
The values are:
Sin Ф = 4/5
Cos Ф = -3/5
Tan Ф = -4/3
Cosec Ф = 5/4
Sec Ф = -5/3
Cot Ф = -3/4
What is the Pythagorean theorem?Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
We have,
The point P = (12,-9) on the circle x² + y² =2 is also on the terminal side of an angle Ф.
This means,
Base = -9
Perpendicular = 12
Applying Pythagorean theorem.
Hypotenuse² = Base² + Perpendicular²
Hypotenuse² = (-9)² + 12²
Hypotenuse² = 81 + 144
Hypotenuse² = 225
Hypotenuse = √225 = 15
Hypotenuse = 15
Now,
Sin Ф = Perpendicular / Hypotenuse = 12/15 = 4/5
Cos Ф = Base / Hypotenuse = -9/15 = -3/5
Tan Ф = Perpendicular / Base = -12/9 = -4/3
Cosec Ф = Hypotenuse / Perpendicular = 15/12 = 5/4
Sec Ф = Hypotenuse / Base = -15/9 = -5/3
Cot Ф = Base / Perpendicular = -9/12 = -3/4
Thus,
The values are given above.
Learn more about the Pythagorean theorem here:
https://brainly.com/question/14930619
#SPJ1
A box had twice as many grapes as a basket. Once 2 kg of grapes were added to the basket, it contained 0.5 kg more than the box. How many kilograms of grapes are in the basket now?
Answer:
there are now 3.5 kilograms of grapes in the basket (the mystery number is 1.5)
Let us suppose that the number of grapes in the box is x and the number of grapes in the basket is y.
It means that the weight of the grapes in the box is x kg and that of basket is y kg.
It has been given that the box had twice as many grapes as a basket. Therefore, we have
Now when we add 2 kg to the basket then the weight of the basket is y+2 and the weight of box will remain same.
Now, we have been given that after 2 kilograms were added to the basket it contained 0.5 kilograms more than the box. Hence, we have
Substituting the value x=2y in the equation, we get
Therefore, the basket contains 1.5 kilograms of grapes.
Okay okay okay now this
Answer:
Both sides and they don't even need that kind in. so the fact it does the job and is going out.
Step-by-step explanation:
the problem with it isn't an excuse if it isn't an
You receive a report that demand for lawncare services (demand) will grow from $900,000 per year to $990,000 and the available crews (supply) will grow from 100 to 120. Which is growing faster (as a percentage), supply or demand?
Answer:
supply
Step-by-step explanation:
Write the quadratic equation in standard form.
Then solve using the quadratic formula.
1+ 4x + 3x2 = 0
HELPP
Answer:
x = − 1 3 − 1
Step-by-step explanation:
Solve the equation for x by finding a , b , and c of the quadratic then applying the quadratic formula. x = − 1 3 − 1
Select the equation that has a = 112 as its solution.
Answer:
Where are your equations?
Step-by-step explanation:
-4=-5+v/14 what is v
Answer:
14
Step-by-step explanation:
-4+5=1
1=v/14
1x14=14
14=v
angles of a triangle, find xº. If x°, 2x°, and 30° are the angles of a triangle, find x° and 2xº. If 3x°, 4x°, and 5x° are the angles of a triangle find these angles
Answer:
Step-by-step explanation:
The sum of angles in a triangle add up to 180
Triangle 1:
x + 2x + 30 = 180
⇒ 3x + 30 = 180
⇒ 3x = 180 - 30
⇒ 3x = 150
⇒ x = 150/3
⇒ x = 50
⇒ 2x = 2(50)
⇒ 2x = 100
x = 50°
2x = 100°
Triangle 2:
3x + 4x + 5x = 180
⇒ 12x = 180
⇒ x = 180/12
⇒ x = 15
3x = 3(15)
⇒ 3x = 45
4x = 4(15)
⇒ 4x = 60
5x = 5(!5)
⇒ 5x = 75
The angles are: 45°, 60° and 75°
What kind of function best models each situation?
Cate started with $0 in her account. After one week Cate saved $1; after two weeks she saved $4; after three
weeks she saved $9; and after four weeks she saved $16.
The function representing the given situation will be f(x) = x², where x is the number of week.
What is function?A function is defined as a relation between a set of inputs having one output each.
Given that, Cate started with $0 in her account. After one week, Cate saved $1; after two weeks she saved $4; after three weeks she saved $9; and after four weeks she saved $16.
As we see,
In 1 week the amount is $1
In 2 week the amount is $4
In 3 week the amount is $9
Which is showing that the amount is square of the week.
Hence, we can write the function as f(x) = x², where x is the number of week.
For more references on function, click;
https://brainly.com/question/21145944
#SPJ1
12.7 is it
Irrational
Rational
Integers
Whole
Natural
Answer:
Rational number
Step-by-step explanation:
It is a rational number because it terminates. However, it is NOT an integer because there is a decimal making it unable to be a whole and natural number.
Help pls!!
x^2+6x≤-5
Show work
Answer:
x ≤ -1 or x ≤ -5
Step-by-step explanation:
if the quest is x^2 + 6x ≤ -5
then x ≤ -1 or x ≤ -5
in a city of 190,000 people, there are 17,000 women. what is the probability that a randomly selected person from the city will be a woman?
The probability that a randomly selected person from the city will be a woman is 17,000 / 190,000, or approximately 0.089.
1. Calculate the total number of women: 17,000
2. Calculate the total population of the city: 190,000
3. Divide the number of women by the total population: 17,000 / 190,000
4. The probability is approximately 0.089
The probability that a randomly selected person from the city will be a woman is 17,000 / 190,000, or approximately 0.089.
The probability that a randomly selected person from the city of Akron, Ohio will be a woman is 0.089. This means that out of every 100 people, approximately 8.9 of them will be female. The city has a population of 190,000 and 17,000 of them are female. This means that approximately 8.9 percent of the city's population is female.
Learn more about probability here
https://brainly.com/question/11234923
#SPJ4
solve the following for y
-11x+23y=-2
Step-by-step explanation:
that is the answer up there couldn't write it down
popular magazine tests cars and trucks for mileage on the road and around the city. the magazine reports that 50% of the cars tested had mileages below 24.7 mpg on the road, and the other 50% of the cars tested had mileages above 24.7 mpg. which statistic does this 24.7 represent? question 9 options: the interquartile range (iqr) of the gas mileages for the cars tested. the mode of the gas mileages for the cars tested. the median of the gas mileages for the cars tested. the mean of the gas mileages for the cars tested.
The statistic that the value 24.7 represents in this context is the median of the gas mileages for the cars tested.
Popular magazine that tests cars and trucks for mileage on the road and around the city. They report that 50% of the cars tested had mileages below 24.7 mpg on the road, and the other 50% had mileages above 24.7 mpg. The 24.7 mpg statistic represents the median of the gas mileages for the cars tested. This is because the median is the middle value when the data is arranged in ascending order, and in this case, it separates the lower 50% from the upper 50% of the mileages.
The median is the value that separates the data set into two halves. In this case, the magazine reports that 50% of the cars tested had mileages below 24.7 mpg on the road and the other 50% of the cars tested had mileages above 24.7 mpg. This means that 24.7 mpg is the exact middle value of the distribution of the gas mileages for the cars tested.
Learn more about "median ":
https://brainly.com/question/26177250
#SPJ11
If the probability of writing the correct answer to a question on an exam is 2/5, what are the odds against
writing the correct answer?
Simplify 5
√8
+
1
√3
.
To simplify the expression 5√8 + √3, we can simplify each radical term separately and then combine them.
First, let's simplify the radical terms:
√8 can be simplified as 2√2 because 8 can be factored into 4 * 2, and √4 is equal to 2.
√3 cannot be simplified further since 3 is a prime number.
Now, let's substitute the simplified radical terms back into the expression:
5√8 + √3 becomes 5(2√2) + √3.
Next, we can multiply the coefficients outside the radicals:
5(2√2) is equal to 10√2.
Putting it all together, the simplified expression is:
10√2 + √3.
So, 5√8 + √3 simplifies to 10√2 + √3.
need some help on this one, try to give me an answer as soon as possible. thanks:)
Answer:
122
Step-by-step explanation:
calculations attached
please help me im just really slow
at
Question:
The current (in amps) in a simple
electrical circuit varies inversely to
the resistance measured in ohms.
The current is 24 amps when the
resistance is 20 ohms. Find the
current (in amps) when the
resistance is 12 ohms.
Please help
The current in amps when the resistance is 12 ohms is 40 amps.
Explain resistance
Resistance is the measure of how much a material or object opposes the flow of electric current through it. It is a property that determines how much voltage is needed to drive a given current through the material and is measured in ohms. Resistors are components used to control the resistance in an electrical circuit.
According to the given information
We know that the current (I) varies inversely with the resistance (R), so we can write:
I = k/R
24 = k/20
Multiplying both sides by 20, we get:
k = 480
Now we can use this value of k to find the current when the resistance is 12 ohms:
I = 480/12
I = 40
To know more about resistance visit
brainly.com/question/30799966
#SPJ1
Suppose K is the midpoint of JM. Name a theorem you could use to prove that triangle JKL is congruent to triangle MKL.
Answer:
i.dk much but try Hypotenuse Leg Theorem very sorry if i wrong so sorry
Step-by-step explanation:
i.dk how i would explain
Answer:
SAS
Step-by-step explanation:
i just got it right
A survey was conducted about real estate prices. Data collected is 181386,243922,355008,406791,542820,648303,782200 , 845053,924494,1089774,1175704,1274928,1308954 . What is the median price
The median price from the given data is 648,303.
To find the median price from the given data, we need to arrange the prices in ascending order and then locate the middle value. If there is an odd number of data points, the median will be the middle value. If there is an even number of data points, the median will be the average of the two middle values.
Let's arrange the data in ascending order:
181,386,243,922,355,008,406,791,542,820,648,303,782,200,845,053,924,494,1,089,774,1,175,704,1,274,928,1,308,954
There are a total of 13 data points, which is an odd number. So, the median price is the middle value.
The middle value is the 7th value:
Median Price = 648,303
Therefore, the median price from the given data is 648,303.
Learn more about price from
https://brainly.com/question/29023044
#SPJ11
help meh plz!!!
Which expression is the factored form of−4.5n+3?
−3(1.5n−1)
−3(1.5n+1)
−1.5(−3n+2)
−1.5(3n+2)
Answer: −4.5n+3 = -3(1.5n - 1)
Step-by-step explanation:
Shirley wants to find an estimate for the number of bees in her hive.
On Monday she catches 90 of the bees.
She puts a mark on each bee and returns them to her hive.
On Tuesday she catches 120 of the bees.
She finds that 20 of these bees have been marked.
(a) Work out an estimate for the total number of bees in her hive.
The estimate for the total number of bees in her hive is 190 bees
How to find the total estimate of the bees ?She catches 90 of the bees on Monday and she puts mark on each bees and return them to her hive.
On Tuesday she catches 120 of the bees. She find out that 20 of the bees has been marked.
This means only 100 bees have not been marked on Tuesday.
Therefore, the total number of bee in her hives is as follows:
total number = 90 + (120 - 20)
total number = 90 + 100
total number = 190 bees
learn more on estimate here:https://brainly.com/question/16670022
#SPJ1
VP is a median of triangle PRQ. If segment QR is 8.5 inches, find the length of segment VR.
Don't forget your units!
please help if you can thanks!
Answer:
is this all what u where given
Find the equation of the line in slope-intercept form. m = -4/7 through (14,3) ANSWER TODAY CORRECTLY AND I WILL GIVE YOU BRAINLIEST
Answer:
y = (-4/7)x + 5
Step-by-step explanation:
We want the equation of a line in slope-intercept form y = mx + b.
Knowing that m = -4/7, we write y = (-4/7)x + b.
We know this line passes through (14, 3) and thus can substitute 14 for x and 3 for y in the above equation, obtaining:
3 = (-4/7)(14) + b
Solving for the y-intercept, b, we get
3 = -4(-2) + b, or
b = 5
Thus the desired equation is y = (-4/7)x + 5.