In a lab experiment, 760 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 15 hours. How long would it be, to the nearest tenth of an hour, until there are 1180 bacteria present?​

Answers

Answer 1

Answer:

9.5

Step-by-step explanation:

delta math


Related Questions

please help for all equations please. use the pythagorean theorem!!! i will give brainlyiest to the most helpful answer

Answers

Answer:

Do 15^2 +10^2=c^2 than put answer Into \sqrt()

Step-by-step explanation:

Step-by-step explanation:

Ok, so the pythagorean theorem is  a^2 + b^2  = c^

where c is the hypotenuse and b and a are the the other 2 sides

9) 10^2 + b^2 = 15^2

100 + b = 225

-100       -100

b^2 = 125

sqrt of 125 = 5

b = 5

10) 2^2 + 5^2 = C^2

4 + 25 = c^2

sqrt of 29 = c

c = [tex]\sqrt{29\\}[/tex]

11)  42^2 + a^2 = 48^2

1764 + a^2 =2304

-1764            -1764

a^2 = 540

a = [tex]6\sqrt{15}[/tex]

What is the Surface Area Formula for a Square Pyramid? I need the formula

Answers

Answer:

The surface area of a square pyramid is the sum of the areas of all its 4 triangular side faces with the base area of the square pyramid. If a, h, and l are the base length, the height of the pyramid, and slant height respectively, then the surface area of the square pyramid = a2+ 2al (or) a2+2a √a24+h2 a 2 4 + h 2 .

PLEASE HELP WITH THISSS

Answers

Answer:

See the attached

Step-by-step explanation:

I left last bits to you as it is about checking your understanding

HELP ITS URGENT
a. b. c. or d.???

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Answer:

It's the last option, (a-c)√x + b√y

Step-by-step explanation:

HERE I NEED HELP!!!!!

Answers

Answer:

Area of ¼th part of circle =¼πr²=¼×3.14×12²

=113.04in²

Area of rectangle ABCD=l×b=8×17=136in²

Area of rectangle DEFG=l×b=5×3=15in²

Total area : 113.04+136+15=264.04 =264 square inches.

Answer:

area = 263.04 in²

Step-by-step explanation:

area = (8 x 17) + (5 x 3) = (0.25 x 3.14 x 12²) = 135 + 15 + 113.04 =263.04 in²

Evaluate. Write your answer as a fraction in simplest form.

Answers

Answer:

6/21

Step-by-step explanation:

2/3 x 2/3 x 2/3

6/21

2x + 5y = 10

i need the slope and y-intercept

Answers

Y intercept is found by having the x value equal 0 (and vise versus for x intercept) so 5y=10 or simplified y=2
Then you have to find the x intercept (2x=10 and or x=5) then it’s just run over rise (2/5)

Answer:

Slope: [tex]-\frac{2}{5}[/tex]

Y-intercept: 2

Step-by-step explanation:

We have to isolate y;

2x + 5y = 10

5y = -2x + 10

y = [tex]\frac{-2x + 10}{5}[/tex]

y = [tex]-\frac{2}{5} x + 2[/tex]

Hope this helps!

 A map of a highway has a scale of 2 inches equals 33 miles. The length of the highway on the map is 6 inches. There are 11 rest stops equally spaced on the​ highway, including one at each end. You are making a new map with a scale of 1 inch equals 30 miles. How far apart are the rest stops on the new​ map?
(nvm)

Answers

Answer:

The answer is "0.975"

Step-by-step explanation:

Please find the complete question in the attched  file.

Find the remaining distance inside the original map

[tex]\to \frac{9}{6}=1.5 \ in[/tex]

Dividing the value by 6 because there are 7 rest stop:

[tex]\to \frac{2 \ inches}{39 \ inches} =\frac{1.5 \ inches}{x \ miles}\\\\\to x=39 \times \frac{1.5}{2}\\\\\to x=29.25 \ miles[/tex]

Finding the diatance of the rest stop in the new map

Using proportion:

[tex]\to \frac{1 \ inches}{30 \ miles} =\frac{x \ inches}{ 29.25 \ miles}\\\\\to x= \frac{29.25}{30}\\\\\to x=0.975 \ in[/tex]

A tepee with a dirt floor in the shape of a right cone has a slant height of 26 feet and a radius of 12.5 feet. Approximately how much canvas would be needed to cover the tepee?

Answers

Answer:

help me with this please

Help me with this please!!!!!!

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Answer:

w = [tex]14\sqrt{2}[/tex]

Step-by-step explanation:

Sin(60) = [tex]7\sqrt{6}[/tex] / w

Sin(60) * w =  [tex]7\sqrt{6}[/tex]

w =  [tex]7\sqrt{6}[/tex] / Sin(60)

w = [tex]14\sqrt{2}[/tex]

Hope this helps!

find the surface area please help

Answers

Answer:

the answer is 30

Step-by-step explanation:

hight x base²

Answer:

AS =282.7cm²

Step-by-step explanation:

SA = 3.14×r×L +3.14×r²

L²=5²+12²

L=13)

= 3.14×5×13 + 13.4x5²

AS=282.7cm²

Collete mapped her vegetable garden on the graph below. Each unit represents 1 foot. Collete plants an 8-foot row of lettuce in the garden. Which points could tell where the row of lettuce starts and ends?

Answers

Answer:

(-4,-1) and (-4,7)

Step-by-step explanation:

If Collete planted a row of lettuce, that means their coordinates must have the same vertical coordinate, or the same horizontal coordinate. Another important characteristic is that between those points, there must have 8 units of separation, because it's an 8-foot row.

The heights of the pine trees in a certain forest are normally distributed, with a mean of 86 feet and a standard deviation of 8 feet.

Approximately what percentage of the pine trees in this forest are taller than 100 feet?

Answers

Answer:

4%

Step-by-step explanation:

We solve this question using z score formula

z = (x-μ)/σ,

where

x is the raw score = 100 feet

μ is the population mean = 86 feet

σ is the population standard deviation = 8 feet

Hence,

x > 100 feet

z = (100 - 86)/8

z = 1.75

Probability value from Z-Table:

P(x<100) = 0.95994

P(x>100) = 1 - P(x<100) = 0.040059

Converting to Percentage

= 0.040059 × 100

= 4.0059%

Approximately = 4%

Therefore, the percentage of the pine trees in this forest are taller than 100 feet is 4%

pleas help due to night​

Answers

Answer:

56 ft

Step-by-step explanation:

Perimeter is the distance around the shape

18 x 2 + 10 x 2 =

36 + 20 =

56 ft

Answer:

56 feet

Step-by-step explanation:

First, we have to understand that since this is rectangle opposite sides are equal, and that perimeter is equal to the sum of all sides. From this, we know that in this question perimeter equals...

perimeter = 18 + 10 + 18 + 10 = 56 feet

please help,
i accidentally skipped the lesson and i'm not sure what to do.

Answers

Answer:

75

Step-by-step explanation:

Find the difference between the measures of the two intercepted arcs and divide by 2:

(180-30)/2 =150/2 = 75

The measure of angle ACE is 44 degrees.

WILL GIVE BRAINLIEST!!!!!!!!!!!! 20 points

Answers

Answer:

if they are same exact thing but mirrored, then just mirror it the way it needs to.

Example

-1 in the second by -3.4, 3.4 by  1

If the following data were transformed, and points with the coordinates
(x, log())) were plotted, what points would be plotted? Round log() to three
decimal places.
х
у
4.
81
5 243
6 729
O A. (81, 1.908), (243, 2.386), (729, 2.863)
O B. (4,1.908), (5,2.386)(6,2.863)
O c. (1.908, 4), (2.386,5), (2.863, 6)
O D. (1.908, 81), (2.386, 243), (2.863, 729)

Answers

Answer: B

Step-by-step explanation:

A painter has finished painting 45% of a really long fence. If she has painted 90 feet so far, how long is the entire fence?

Answers

Answer:

90/45%=200

the entire fence is 200

Michelle has a piece of yarn measuring 7 yards. How many 1-inch strips can be cut from the yarn?

A) 252 strips
B) 216 strips
C) 180 strips
D) 144 strips

Answers

Answer:

c

Step-by-step explanation:

Which equation does the graph below represent

Answers

Answer:

4) y=-4x

Step-by-step explanation:

The lines goes down 4 units as it moves 1 unit right.

Find the area of the figure.

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Answer:

28.5 units²

Step-by-step explanation:

Shape 1 - ( length * width ) 3*5 = 15

Shape 2 - ( length * width ) 3*3 = 9

Shape 3 - ( height * base / 2 ) 3*1.5 = 4.5

9/10 + 3/5

A. 15/10
B. 1 1/2
C. 12/15
D. 4/5

**ANYTHING UNRELATED WILL BE REPORTED**

Answers

Answer:

15/10

Step-by-step explanation:

Since it is adding you need to get a common denominator(bottom number).

I know that 2 × 5 = 10 so now we multiply 3/5 × 2

we get 6/10

now the problem is 9/10 + 6/10

9 + 6 = 15 and the denominator is 10

15/10

Answer:

A. 15/10

Step-by-step explanation:

3/5= 6/10

6/10+9/10= 15/10

Will give brainliest if correct! Which of the following is not a solution to the inequality 3−(7−2x)>−8?
A) -3
B) -1
C) 0
D) 1

Answers

Answer:

-3

Step-by-step explanation:

3-(7-2x) > -8

get rid of the parentheses because there is a minus sign before them

3-7+2x > -8

replace x with all the numbers (one by one not all at once) and see if the equation is correct until you find the number that makes it incorrect.

EXAMPLE:

3-7+2(1) > -8 parentheses next to a number means multiply

3-7+2 > -8

3-7 = -4

-4 + 2 = -2

-2 is greater than -8

Approximate the distance between (0, -5) and (4, 1) to the nearest tenth, if necessary.

Answers

Answer:

7.7

Step-by-step explanation:

To solve this question we must use Pythagoras (a²+b²=c²) Let those two dots be A and B respectively.Imagine a line is drawn that pases through both dots,

Imagine that the line given is the hypotenuse (the longest side of a right-angled triangle) of a right-angled triangle and the other sides as a line from A going to the right, and a line from B going downwards, making the final vertexes for the triangle at coordinates: 0,-5  4,1 and 4,-5 (the vertex we made). now we find the lengths for the sides: 4 and 6 so we use these to plug them into pythagoras's equation:

4²+6²=c²

24+36=c²

√60=c

c=7.74....

But all we need is until the tenths so the answer is 7.7 (as the hundredths digit, 4, rounds down)

PLEASE HELP!!!!!!!!!!!

Answers

Its the red one bc its between 1 and 12

What is the area of the sector?

Answers

Answer:

d

Step-by-step explanation:

100pi

Which value of x is the solution to the equation 4(-3x+8)= -16?

answer choices:
1. -4

2. -2

3. 2

4. 4

explain

Answers

Answer:

x = 4

Step-by-step explanation:

4(-3x + 8) = -16

Divide both sides by 4

-3x + 8 = -4

Subtract 8 from both sides

-3x = -12

Divide both sides by -3

x = 4

Answer: X=4
. 4(-3x+8)=-16
-12x+32= -16
-12x=—48
X=4

CHECK:
4(-3(4)+8)=-16
4(-4)=-16
-16=-16

Need this question completed as soon as possible! Please!

Answers

Answer:

B is the answer

Step-by-step explanation:

I converted each option to decimals so answer b looks like

2.25> 2.23> -2> -2.2

Find the distance between the points (-4,9) and (5, -3).
Write your answer as a whole number or a fully simplified radical expression. Do not round.
units
Submit

Answers

Answer:

15 units

Step-by-step explanation:

The formula of a distance between two points:

[tex]A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}}[/tex]

We have:

[tex]A(-4;\ 9);\ B(5;\ -3)\\\\|AB|=\sqrt{(5-(-4))^2+(-3-9)^2}=\sqrt{9^2+(-12)^2}=\sqrt{81+144}\\\\=\sqrt{225}=15[/tex]

[tex]\frac{25}{24} x \frac{18}{35} =\\[/tex]

Answers

Answer:

1307/840

Step-by-step explanation:

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