if the number of bacteria in a colony double every 330 minutes and there is currently a population of 1100 bacteria what will the population be 990 minutes from now

Answers

Answer 1
This can be done in a straightforward manner.

If it doubles every 330 minutes, it will increase by a factor of 4 after 990 minutes.

1,100 * 4 = 4,400



Related Questions

The square of a positive number decreased by twice the number is 48. Find the number

Answers

x^2=2x+48
x^2-2x-48=0
(x-8)(x+6)=0
x=8 x=-6
x must be negative so x=-6
check 
36=48+-12
36=36

Let the required positive number is x.

The square of the number is [tex]x^2[/tex]

Now, we have been given that square of a positive number decreased by twice the number. It means we have

[tex]x^2-2x[/tex]

Now, it is equal to 48. Hence, we have

[tex]x^2-2x=48\\ x^2-2x-48=0\\ x^2-8x+6x-48=0\\ x(x-8)+6(x-8)\\ (x-8)(x+6)=0\\ x=8,-6[/tex]

The number is positive, Hence, we have [tex]x=8[/tex]

Therefore, the required number is 8

The longer leg of a right triangle is 4 more than twice the shorter leg. The hypotenuse is 4 less than three times the short leg. What is the value of the hypotenuse?

Answers

Let the shorter leg = x

shorter leg =x 
longer leg = 2x + 4
hypotenuse = 3x - 4

Given that a² + b² = c²

x² + (2x + 4)² = (3x - 4)²

Remove brackets : (a + b)² = a² + 2ab + b²:
x² + 4x² + 16x + 16 =  9x² - 24x + 16

Moved all terms to the left:
x² + 4x² + 16x + 16 - 9x² + 24x - 16 = 0

Combine like terms:
-5x² + 40x = 0

Multiply all terms by -1:
5x² - 40x = 0

Take out 5x as common factor:
5x(x - 8) = 0

Apply zero product property:
5x = 0 or x - 8 = 0

Evaluate:
x = 0 or x = 8

Since length cannot be zero, shorter leg = 8

shorter leg = 8
Hypotenuse = 3(8) - 4 = 20

Answer: 20 units


Out of the 180 students at a summer camp, 72 signed up for canoeing. There were 23 students who signed up for trekking, and 13 of those students also signed up for canoeing.

Use a two-way table to organize the information and answer the following question:

Approximately what percentage of students signed up for neither canoeing nor trekking?

72%
40%
54%
98%

Answers

There are 72 students that signed up for canoeing, and 23 students that signed up for trekking. 13 of these 23 students also signed up for canoeing.

Use the following equation to find the amount of people that signed up for an activity:

[tex]72 + 23 - 13 = 82[/tex]

82 students signed up for canoeing or trekking.

Subtract this total from the total amount of students to find the total that did not sign up for an activity:

[tex]180 - 82 = 98[/tex]

Divide this number by the total amount of students in the camp:

[tex]98 \div 180 = 0.54[/tex]

Multiply this decimal by 100 to convert into a percentage:

[tex]0.54 * 100 = 54[/tex]

54% of students did not sign up for neither canoeing nor trekking.
Even though Kanest's answer is verified and correct, the attached picture is how the 2 way table should be set up:

Find the slope of the line graphed below

Answers

the slope is -3/1 or -3
the slope is -3
[tex] \frac{ - 3 - 0}{0 - ( - 1)} = \frac{ - 3}{1 } = - 3[/tex]



good luck

The recommended space needed for certain plant is 2 ft.² you want to plant 32 of this plants in a square garden .what is the length of each side of the garden if you follow the recommendation?

Answers

each side should be 32ft because if you do 32 times 2^2 it equals 128 and 128/4=32 so 32 per side

Compare the functions shown below:


f(x) = −3x − 5
g(x)

cosine function with y intercept at 0, negative 3 h(x) = 2 cos(2x − π) + 4


Which function has the greatest y-intercept?

a. f(x)
b. g(x)
c. h(x)
d. all three functions have the same y-intercept

Answers

Find all y-intercepts:

1. For f(x): when x=0 you have that f(0)=-3·0-5=-5, then y-intercept is a point (0,-5).

2. For g(x): from the task conditions you have that g(x) is cosine function with y intercept at 0, negative 3, then y-intercept is a point (0,-3).

3. For h(x): when x=0 you have that h(0)=cos(2·0-π)+4=cos(-π)+4=-1+4=3, then y-intercept is a point (0,3).

As you can see the greatest y-intercept has function h(x).

Answer: correct choice is C.

Answer:

C

Step-by-step explanation:

I just took the test. :)

(05.07 mc) mandy needs to paint all the faces and the base of a model pyramid she made for her history project. the dimensions of the pyramid are shown here. what is the total surface area of the pyramid? a square pyramid is shown. the side of the square is 10 inches. the height of the triangular faces is 9 inches.

Answers

To find the area of the square pyramid you will consider the shapes that make up the net of the pyramid (what it looks like when it is unfolded).

There are 4 congruent (same size and shape) triangles and a square.

The area of the square is
A = bh
     10 in x 10 in
A = 100 square inches.

The area of one triangle is
A = 1/2bh
    1/2 x 10 in x 9 in
A = 45 square inches

45 square inches x  4 (for the 4 triangles)

180 square inches of triangles

180 + 100 = 280

The total surface area of the square pyramid is 280 square inches.

Answer:

280

Step-by-step explanation:

i n e e d p o i n t s

Write an equation of the line that is parallel to 2x + 4y = 6 and passes through the point (6, 4).

Answers

2x + 4y = 6
4y = -2x + 6
y = -1/2x + 3/2
slope = -1/2

y = mx + b 
y = -1/2x + b

At point (6, 4)
4 = -1/2(6) + b
4 = -3 + b
b = 7

Equation : y = -1/2x + 7

A french fry stand at the fair serves their fries in paper cones. The cones have a radius of 222 inches and a height of 666 inches. It is a challenge to fill the narrow cones with their long fries. They want to use new cones that have the same volume as their existing cones but a larger radius of 444 inches. What will the height of the new cones be?

Answers

Final answer:

To find the height of the new cone with a larger radius that maintains the same volume, we calculate the volume of the original cone and solve for the new height using the cone volume formula.

Explanation:

The student wants to find out the new height of the cone with a larger radius while maintaining the same volume as the original cone. The volume of a cone is given by the formula V = 1/3 πr²h. To find the height of the new cone, we'll use the volume of the original cone as the constant value.

Let's first calculate the volume of the original cone:

V_original = 1/3 π(222²)(666)

Now, let's set up an equation with the new radius to solve for the new height (h_new):

1/3 π(444²)(h_new) = V_originalh_new = (V_original) / (1/3 π(444²))

By substituting the V_original from step 1 into step 3, we can solve for h_new. The result will be the height of the new cone with a radius of 444 inches that has the same volume as the original cone.

How do you combine like terms of #-10+7x+24-2x#?

Answers

You should first add -10 and 24. Then you should subtract 7x and 2x. All you have to do is to find the like terms ( 7x and 2x because they both have x’s, and -10 and 24 because they don’t have x’s). So your answer would be 14+5x. If you have any questions please reply.

Out of the total respondents, the percentage of respondents from the 46–55 age group who rated the film excellent is
%. Write your answer up to two decimal places.
NextReset

Answers

The percentage of respondents from the 46-55 age group who rated the film excellent is 20 %.

To determine the percentage of respondents from the 46-55 age group who rated the film excellent, you need two pieces of information: the number of respondents in that age group who rated the film excellent and the total number of respondents in that age group. The formula for calculating the percentage is:

[tex]\[ \text{Percentage} = \left( \frac{\text{Number of respondents who rated excellent}}{\text{Total number of respondents in the age group}} \right) \times 100 \][/tex]

Assuming you have these numbers, let's denote the number of respondents who rated the film excellent in the 46-55 age group as X and the total number of respondents in that age group as Y. The formula becomes:

[tex]\[ \text{Percentage} = \left( \frac{X}{Y} \right) \times 100 \][/tex]

For example, if 20 respondents in the 46-55 age group rated the film excellent out of a total of 100 respondents in that age group, the calculation would be:

[tex]\[ \text{Percentage} = \left( \frac{20}{100} \right) \times 100 = 20\% \][/tex]

Therefore, replace X and Y with the actual numbers from your data to find the specific percentage.

Determine the equation of the line given by the graph.


A) y = 2x + 4

B) y = 4x + 2

C) y = 1/2x − 2

D) y = −2x + 4

Answers

Answer is A, the slope is 2/1 and y-intercept is 4

The equation of the given line is y=2x+4. Therefore, option A is the correct answer.

From the given graph coordinates on the line are (-2, 0) and (0, 4).

What is slope of a line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

Slope of a line, m= 4/2 = 2

Put m=2 and (-2, 0) in y=mx+b

0=2(-2)+b

b=4

Substitute m=2 and b=4 in y=mx+b

That is, y=2x+4

The equation of the given line is y=2x+4. Therefore, option A is the correct answer.

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A sound wave travels through iron at a rate of 5120 m/s. At what rate do the sound waves travel at km/h

Answers

km/h = 18,432 is the answer to your question.

Answer:

Sound waves travel through iron at 11,427,840 km/h.

Step-by-step explanation:

A kilometer is equal to 0.62 miles. An hour is equal to 3600 seconds. Therefore, if a sound wave travels through iron at a rate of 5120 m/s, it would be equal to (5120 x 0.62) km/s. This is equal to 3174.4 km/s which, multiplied by 3600 (the number of seconds that make an hour), would determine the speed in which a sound wave travels through iron. So, as 3174.4 x 3600 is 11,427,840, so sound waves travel at 11,427,840 km/h.

In the ancient chinese proverb, there are more than how many different ways to breathe

Answers

Answer: 40

What we all know is that there is only one way to breath (inhaling and exhaling) For the ancient Chinese, as cited on ancient proverb there are forty (40) ways.  These different ways promote relaxation thru breathing on the lower stomach. 

Find the distance between the two points. (2, 5) and (–1, –5)

Answers

√109≈10.44030650 <--- Answer

Distance=√(x2−x1)2+(y2−y1)2

√((−1)−(2))2+((−5)−(5))2 

That check sign is the square root, since they wouldnt let me put it in...
[tex]\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ \begin{array}{ccccccccc} &&x_1&&y_1&&x_2&&y_2\\ % (a,b) &&(~ 2 &,& 5~) % (c,d) &&(~ -1 &,& -5~) \end{array} \\\\\\ d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{(-1-2)^2+(-5-5)^2} \\\\\\ d=\sqrt{(-3)^2+(-10)^2}\implies d=\sqrt{109}[/tex]

Let v1 = (-6,4) and v^2 = (-3,6). Compute the following
V^1 * V^2

Answers

It is just the multiplication of vectors. We'll multiply corresponding pairs together. The general formula for the pairs of ([tex] x_{1} [/tex]; [tex] y_{1} [/tex]) and ([tex] x_{2} [/tex]; [tex] y_{2} [/tex]) is [tex] x_{1} [/tex] * [tex] x_{2} [/tex] + [tex] y_{1} [/tex] *  [tex] y_{2} [/tex] = (-6)*(-3)+4*6=18+24=42

You bought a guitar 6 years ago for $400. It's value decreases by about 13% per year. Write a formula to show the value of the guitar over those six years and determine its current value

Answers

this would be a depreciation formula
 which is value = Original price x (1-percent change)^time
 using the information from the problem 

Value = 400 x(1-0.13)^6

value = 400 x 0.87^6

value = $173.45

Final answer:

The current value of the guitar after depreciating by 13% per year over 6 years is calculated using the exponential decay formula  [tex]V = P(1 - r)^t[/tex], which gives us an approximate current value of $173.45

Explanation:

The given formula represents depreciation, where the value of an asset decreases over time. Applying this to the provided scenario, with an original price of $400 and a 13% annual depreciation rate, we calculate the value after 6 years. Substituting these values into the formula, we find: Value =  [tex]400 \times (1 - 0.13)^6 = 400 \times 0.87^6 = \$173.45.[/tex]Therefore, after 6 years, the asset's value is approximately $173.45. Depreciation formulas like this one help assess the declining worth of assets over time due to various factors.

A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theater. If eh represents the number of adults and b represents the number of children, which system of equations could be used to find the number of adults and the number of children in the theater?

Answers

The system of the equations representing the situation is a+b = 243 and

a-b = 109 and values of a and b are 176 and 67 respectively.

What is a system of equations?

A system of equations is a collection of two or more equations with a same set of unknowns.

Given that, A total of 243 adults and children are at a movie theater. There are 109 more adults than children in the theatre. If a represents the number of adults and b represents the number of children,

Establishing the equations according to the given situation,

a+b = 243......(i)

a-b = 109.......(ii)

Adding the equations, we get,

2a = 352

a = 176

Therefore, b = 67

Hence, The system of the equations representing the situation is a+b = 243 and  a-b = 109 and values of a and b are 176 and 67 respectively.

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What is the total amount and the amount of interest earned on $6,500 at 6% for 25 years?

Answers

Answer:

Total amount earned after 25 years=$27,897.16

Step-by-step explanation:

Step 1: Express formula for calculating total amount

The total amount after 25 years can be expressed as;

A=P(1+r)^n

where;

A=total amount after 25 years

P=principal amount

r=annual interest rate

n=number of years

Step 2: Substitute values in the expression

In our case;

P=$6,500

r=6%=6/100=0.06

n=25 years

replacing in the original expression;

A=6,500(1+0.06)^25

A=27,897.16

Total amount earned after 25 years=$27,897.16

Final answer:

The total amount after 25 years will be $27,897.16, and the amount of interest earned on a $6,500 investment at a 6% annual interest rate will be $21,397.16.

Explanation:

To calculate the total amount and interest earned on $6,500 at 6% for 25 years, we'll assume that the interest is compounded annually. The formula to calculate the total amount with compound interest is:

A = P(1 + r/n)^(nt)

Where:

A is the amount of money accumulated after n years, including interest.P is the principal amount (the initial amount of money).r is the annual interest rate (in decimal).n is the number of times that interest is compounded per year.t is the time the money is invested or borrowed for, in years.

Let's plug the values into the formula:

A = $6,500(1 + 0.06/1)^(1*25)

A = $6,500(1 + 0.06)^25

A = $6,500(1.06)^25

A = $6,500 * 4.29187072

A = $27,897.16

The total amount after 25 years will be $27,897.16.

To find the interest earned, subtract the principal from the total amount:

Interest = A - P

Interest = $27,897.16 - $6,500

Interest = $21,397.16

The amount of interest earned will be $21,397.16.

Crater Lake Oregon is a roughly circular lake. The lake basin formed about 7000 years ago when the top of a volcano exploded in an immense explosion. Hillman Peak, Garfield Peak, and Cloudcap are three mountain peaks on the rim of the lake. The peaks are located in a coordinate plane at H(-4,1), G(-2,-3), and C(5,-2). Find the coordinates of the center of the lake.

Answers

To solve the problem we must find the equation of the circumference of the form:
 (Xa) ² + (Yb) ² = r²
 They do not give us the center or the radio, but we have 3 points.
 With the points H (-4,1), G (-2, -3) and C (5, -2) we find 3 equations
 1) (-4-a) ² + (1-b) ² = r²
 2) (-2-a) ² + (-3-b) ² = r ²
 3) (5-a) ² + (-2-b) ² = r ²
 Now we have a system of 3 equations with 3 unknowns: r, a, b
 When solving the system we have to:
 r = 5
 a = 1
 b = 1
 Therefore, the center of the circumference of the lake is the point (a, b)
 That is, the point (1,1)

Answer:

The coordinates of the center of the lake are [tex](\frac{-1}{3},\frac{-4}{3})[/tex].

Step-by-step explanation:

It is given that Hillman Peak, Garfield Peak, and Cloudcap are three mountain peaks on the rim of the lake. The peaks are located in a coordinate plane at H(-4,1), G(-2,-3), and C(5,-2).

If we joint these points, then we get a triangle and the center of a triangle is known as centroid.

The formula for centroid of a triangle is

[tex]Centroid=(\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3})[/tex]

The centroid of the triangle H(-4,1), G(-2,-3), and C(5,-2) is

[tex]Centroid=(\frac{-4-2+5}{3},\frac{1-3-2}{3})[/tex]

[tex]Centroid=(\frac{-1}{3},\frac{-4}{3})[/tex]

Therefore the coordinates of the center of the lake are [tex](\frac{-1}{3},\frac{-4}{3})[/tex].

You choose 3 bananas from a group of 9. In how many ways can this be done?

Answers

Assuming the order of selection doesn't matter:

[tex] \displaystyle
\binom{9}{3}=\dfrac{9!}{3!6!}=\dfrac{7\cdot8\cdot9}{2\cdot3}=84 [/tex]

If matrix A is a 6 × 5 matrix, which order of matrix can be multiplied by matrix A?

Answers

It would be a 5 x 6 matrix 

Answer:

5 x n, where n is any natural number.

Step-by-step explanation:

If A is a 6 x 5 matrix, it means that A has 6 rows and 5 columns, this means that if a matrix B can be multiplied by A, then each one of its columns must have 5 entries. Therefore, B has to be a matrix with 5 rows and it might have any arbitrary number of columns, in other words B is a 5 x n matrix, where n must be a natural number bigger than 1.

Javier is 175% heavier than his brother . if javier brother weigh 80 pounds how much do javier weigh

Answers

100%  = 80 pounds

1% = 80 ÷ 100 = 0.8 pound

175% = 0.8 x 175 = 140 pounds

Answer: Javier weighs 140 pounds.

Anyone know this geometry question? Will give brainiest

Answers

the opposite angles equal each other, so X and Z are equal
 using that we solve for x by setting them equal:

6x-60 = 2x+68

subtract 2x from each side:

4x -60 = 68

add 60 to each side:

4x = 128
 divide both sides by 4
x = 128/4
x = 32

now we know x so we can solve everything else by replacing x with 32

WY = 3x+5 = 3(32)+5 = 96+5 = 101

angle Z = 2x+68 = 2(32)+68 = 64+132

the answer is C


A parabolic archway is 12 meters high at the vertex. at a height of 10 meters, the width of the archway is 8 meters. how wide is the archway at ground level?

Answers

To solve this problem you must apply the proccedure shown below:

 1. You have that the parabola is 12 meters high at the vertex and at a height of 10 meters, the width is 8 meter. 

 2. Therefore, you have:

 x^2=-4a(y^2-k)
 4^2=-4a(10-12)
 16=-40a+48
 16=8a
 a=16/8
 a=2

 y=0
 x^2=-8(0-12)
 x^2=96
 x=√96
 x=9.79x2
 x=19.58

 3. Therefore, as you can see, the answer is: 19.58 meters.
 

We found the width at ground level to be approximately 19.6 meters.

We start by assuming the equation of the parabola to be of the form y = ax² + bx + c.

Since the vertex of the parabolic arch is at (0, 12), we know that c = 12. Next, we use the condition that at y = 10 meters, the width is 8 meters, meaning the points (4, 10) and (-4, 10) lie on the parabola. Plugging these into the equation:

For (4,10): 10 = a(4)² + b(4) + 1210 = 16a + 4b + 1216a + 4b = -2  (1)

Solving for the same with (-4,10) is unnecessary as it results in the same equation. Next, we use the vertex form y = a(x - h)² + k ⇨ y = a(x - 0)² + 12 ⇨ y = ax² + 12.

From equation (1), we have 16a + 4b = -2. Since the vertex form tells us there is no 'b' term in the simplest form, 'b' must be 0. Thus, 16a = -2 ⇨ a = -1/8.

The equation of the parabola is therefore y = -(1/8)x² + 12.

To find the width at ground level (y = 0):

0 = -(1/8)x² + 12(1/8)x² = 12x² = 96 ⇨ x = ±√96 = ±4√6 ≈ ±9.8 meters.

Thus, the total width of the arch at ground level is approximately 2 × 9.8 = 19.6 meters.

Which item produces the magnetic field in the electromagnet?
I’m sorry if the picture is blurry but try please! :)
Thank you all

Answers

From my experience from playing with magnets the answer would be D. This is also B is none magnetic and A could be a choice as will it's just not as strong because there is less iron present.

Image option 2 will produce the magnetic field in the electromagnetism.

What is Magnetic field?

The portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected.

Given that figures,

In figure option 2 there are wires given and as we know when there is current flowing in a body or wire it will create an electric field as well as magnetic field.

Hence, image option 2 is the correct option.

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each of the circles below has an area of 196 pi square units find the perimeter of the rectangle

Answers

Answer:

Step-by-step explanation:

Alright lets get started.

We have given the area of each circle as 196 pi square units.

since the area of the circle =[tex]\pi*radius^2[/tex]

so,the radius of the circle :

[tex]196\pi =\pi r^2[/tex]

[tex]r^2=196[/tex]

[tex]r=14[/tex]

therefore the diameter of the circle will be [tex]2*radius=2*14=28[/tex]

the perimeter of the rectangle=[tex]2*(length+ width)[/tex]

the length of the rectangle will be addition of diameters of the circle=[tex]28+28=56[/tex]

breadth of the rectangle is equal of the diameter =28

Perimeter of the rectangle =[tex]2*(56+28)=168[/tex]

Answer  168 units.

The perimeter of the given rectangle is 168 units

Given that area of each of the circles are [tex] 196 \pi [/tex] sq units and we know that the area of circle [tex]=\pi r^{2}[/tex] using this radius of the circle will be

[tex]\pi r^{2} =196\pi\\ r^{2} = 196\\ \\ r=14[/tex]

So, the diameter of the circle is twice the radius which is

[tex]2\times r\\ 2\times 14 =28 [/tex]

Here we can see that length of rectangle is equal to twice the diameter of the circle and breadth is equals to twice the radius

[tex]length= 28+28=56[/tex]

[tex]breadth = 2\cdot14=28[/tex]

How to find the perimeter of the given rectangle ?

To find the perimeter we use the formula

Perimeter of rectangle = [tex]2\cdot(length + breadth)[/tex]

On solving we get ,

[tex]2\cdot(56 +28)\\ 168 units[/tex]

Therefore, The perimeter of the given rectangle is 168 units

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Find the perimeter of the polygon on this picture. I don’t know how to do this. Plz help

Answers

The perimeter of the polygon will be given by:
Perimeter=distance around the figure
Thus the perimeter will be:
P=9.9+(9.9-5.9)+5.9+15.9+(15.9-4.6)+4.6
P=9.9+4+5.9+15.9+11.3+4.6
P=51.6 
Answer: 51.6 units

Summer spent $55.60 on clothes before sales tax. If sales tax is 7.5%, what did Summer spend with tax included?  *Add Explanation If U Can*

Answers

$59.77. Turn the percent into a decimal by moving the decimal to the left two places (7.5 to 0.075). Then multiply the new decimal by the cost (55.60×0.075=4.17). 4.17 would be the total sales tax, so then add it to the price (55.77+4.17=59.77). Hope that helped.

Where does Pythagorean identity come from and how does it relate to right triangles

Answers

The Pythagorean identity is based from the three trigonometric identities that apply to the Pythagorean theorem. The three identities are founded on the concept that the hypotenuse is equal to the sum of the squares of the two sides of the right triangle. The identities can be determined through the substitution of sine and cosine in the right triangles measurements.
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