In a lab experiment, 80 bacteria are placed in a petri dish. The conditions are such
that the number of bacteria is able to double every 19 hours. How many bacteria
would there be after 17 hours, to the nearest whole number?

Answer: I feel like it's the last one

Step-by-step explanation: ahhh I could be wrong I've had this problem before and I'm certain I chose the last one but I could be wrong if I'm wrong then I'm very sorry

Answer:

(6, -11)

Step-by-step explanation:

In this problem, you are given the image and you need to find the pre-image. To do this work backward and do the opposite of the translation. So, to find the pre-image solve [tex](x+2, y-3)[/tex]. Once you plug in the points you get [tex](6,-11)[/tex] which must be the original point.

Answer:

(6, -11)

Step-by-step explanation:

Answer: Probability is 0.00205 = 0.205%

Step-by-step explanation: P(rain) = 0.71, P(no rain) = 0.29.

P(no rain in 5 days)= 0.29·0.29·0.29·0.29·0.29= 0.00205

Answer:

384

Step-by-step explanation:

8 x 6 = 48

48 x 2 = 96

12 x 10 = 120

6 x 12 = 72

8 x 12 = 96

96 + 120 + 72 +96 = 384

Answer:

Step-by-step explanation:

Remark

Surface area for this = Top +  bottom + left side + 2 triangles.

The hypotenuse of the triangle can be found by the Pythagorean Theorem.

a^2 + b^2 = c^2

a = 6

b = 8

c = ?

c^2 = 6^2 + 8^2

c^2 = 36 + 64

c^2 = 100

sqrt(c^2) = sqrt(100)

c = 10

Top

Top = Length * Width

Top = 12 * hypotenuse

Top = 12 * 10

Top       =                                         120

Left side = L*W

L = 12

W = 6

Area = 6 * 12

Area =                                               72            

Two triangles

Two Triangles = 2* (1/2) * 6 * 8 =   48  

Base

W = 8

L = 12

Area = L*W

Area = 8 * 12                                   96

Total area = 96 + 48 + 72+120 = 336

Answer: 360

Step-by-step explanation:

Since we are informed from the question that Alicia surveyed 50 students in the cafeteria from the population of 300 students, it simply means that she surveyed 50/300 = 1/6 of the students.

Since Thea surveyed the first 60 students who arrived at school one morning, the number of T-Shirts taht they should order will be:

= 1/6 × x = 60

x = 60 × 6.

x = 360

They should order 360 t-shirts for the students.

Answer: Look at the explanation. Note that this is from the book.

Step-by-step explanation:

Alicia: 30/50 = x/30

x=180

They should order about 180 T-shirts.

Thea: 51/60 = x/300

x = 255

They should order about 255.

Note that we got the 300 from what the question said of the population being 300 students.

Hope this helps you!

Answer:

Step-by-step explanation:

Earnings = 16.75 hours × $8.25/hour = $138.1875

Deductions = 6.5% + 1.45% = 7.95%

net = 92.05% of $138.1875 ≈ $127.20

Answer:

Step-by-step explanation:

Answer:

x = - 12

Step-by-step explanation:

9 - 0.5x = 15

* isolate the variable using inverse operations *

step 1 subtract 9 from each side

9 - 9 cancels out

15 - 9 = 6

now we have -0.5x = 6

step 2 divide each side by -0.5

-0.5x / -0.5 = x

6 / -0.5 = - 12

we're left with x = - 12

Answer:

x=6

Step-by-step explanation:

i used an app called math-way hope this  helps.

Answer:

x = 6

Step-by-step explanation:

3(x-4) + 3 = 9

3x - 12 + 3 = 9

3x - 9 = 9

3x = 9 + 9

3x = 18

x = 6

Answer:

257.48 cm

Step-by-step explanation:

circumfrence of circle = 2*pi*radius

2 *3.14*41

257.48 cm

don't forget the unit

Answer:

yes look at the eslotp uudh

Both betas and correlation coefficients can tell you something about the direction of a relationship. The corect option is D.

The coefficient of variation is a ratio which is used to show the level dispersion of values or treatments around the mean of a set of values.

The coefficient of variation is the ratio of the standard deviation to the mean of a set of numbers or treatments. The higher the coefficient of variation the higher the dispersion from the mean.

The coefficient of variation is the best measure of risk for an isolated single asset. Beta is the a measure of how volatile a particular stock is compared to the market.

To know more about correlation coefficient follow

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Answer:

x=25

Step-by-step explanation:

155-(90+65)=x

Answer:

x = 25

Step-by-step explanation:

The sum of interior angles in a triangle is equal to 180

The given is a right triangle

which means one of the angle has a measure of 90

so if we add up all the angles

65 + 90 + x = 180 add like terms

155 +x = 180 subtract 155 from both sides

x = 25

Answer:

y=2x-3

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(9-5)/(6-4)

m=4/2

m=2

y-y1=m(x-x1)

y-5=2(x-4)

y=2x-8+5

y=2x-3

Answer:

x + 1

Step-by-step explanation:

Answer:

1. 15x-10

2. x²-x-12

3. x²-8x+12

4. 2x³+4x²-30x

5. 6x³- 12x²+6x

6. 4x³+12x²-20x

Step-by-step explanation:

4.2x(x+5)(x-3)

= 2x(x²-3x+5x-15)

= 2x(x²+2x-15)

= 2x³+4x²-30x

Answer:

C

Step-by-step explanation:

When you compare it to the other one it just looks better yk. I don't really have a fancy explanation for this, the pie chart just makes the numbers look more even.

Answer:

The answer is 50 miles per hours.

I took a screen shot of the math

From the graph, solution of inequalities is (8, 7). Therefor, she worked as a baby-sitter for 8 hours and worked as a tutor for 7 hours.

Given that, JoAnn likes her job as a baby-sitter, but it pays only $3 per hour.

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Total number of hours JoAnn worked is 15 hours

Let the number of hours she worked as a baby-sitter be x hours, the number of hours she worked as a tutor will be y hours.

Now, x+y<15

3x+6y>66

The intersection consists of the elements that are contained in all of the intervals.

x<15-y and x>22-2y

From the graph, solution of inequalities is (8, 7). Therefor, she worked as a baby-sitter for 8 hours and worked as a tutor for 7 hours.

To learn more about the inequalities visit:

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Answer:

3

°•°°•••°°•••••••••°•○○○●••

Answer:

See the explanation below

Step-by-step explanation:

Given data

Amount invested= $700

Time = 1 year

Say the percent increase for both investments is

The representation of the linear investment A is given by the linear function

y=mx+c

here m= the percent increase

        x= the time taken and

        c= the invested amount

By linear increase, any increment in x that is the time will lead to a corresponding increase in the y value which is the final amount

The representation of the exponential investment A is given by the linear function

y=ab^x

here a= the invested amount

        b= the rate

        x= the time

By exponential increase, any increment in x that is the time will lead to a "non-compliant"/ non-corresponding increase in the y value which is the final amount

Answer:

140

Step-by-step explanation:

7(2x-3y)

7(2*7-3(-2))

7(14+6)

7(20)

140

Answer:

1212

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by the formula:

[tex]z=\frac{x-\mu}{\sigma} \\\\where\ x=raw\ score,\mean,\ \sigma=standard\ deviation.\\\\For \ a\ sample\ size(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }[/tex]

Therefore given that μ = $85900, σ = $11000, n = 35.

For x > 70000:

[tex]z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{70000-85900}{11000/\sqrt{35} } =-8.55\\[/tex]

For x < 100000

[tex]z=\frac{x-\mu}{\sigma/\sqrt{n} } =\frac{100000-85900}{11000/\sqrt{35} } =7.58[/tex]

From the normal distribution table, P(70000< x < 100000) = P(-8.55 < z < 7.58) = P(z < 7.58) - P(z < -8.55) = 1 - 0 = 1 = 100%

Answer:

78 degrees

Step-by-step explanation:

We know that these triangles are congruent

Angle N is the same as angle W since the triangles are congruent

Angle N = 78 degrees

Therefor angle W = 78 degrees

Answer:

The angles are : 30° , 90° , 60° and 120°

Step-by-step explanation:

In a rhombus the obtuse angles measure up to 120° while the acute angles measure up to 60°

In other to find the net measure of the angles

we will draw  altitude from the vertex to form a right angled triangle and it will as well bisect the opposite side.

let the base of the right angled triangle ( opposite the obtuse angle ) = 1/2 x

side( hypothenuse ) of rhombus = x

sine = opposite / hypothenuse

hence sine x =  1/2 x / x

∴ sin x = 1/2

therefore to determine the value of x

sin^-1 ( x ) = sin^-1 ( 1/2 )

hence ; x = 30

given that the sum of the angles in a triangle = 180 . hence the third angle ( the acute angle ) = 180 - 90 - 30 = 60°

Given that the acute angle and the obtuse angle of a rhombus is  supplementary

hence the value of the obtuse angle = 180° - 60° =  120°

Answer:

Ángulo agudo

Es cualquier ángulo que mida más de 0 grados pero menos de 90 grados. Un ángulo agudo cae en algún lugar entre inexistente y un ángulo recto.

Acute angle

It's any angle that measures more than 0 degrees but less than 90 degrees. An acute angle falls somewhere between nonexistent and a right angle.

Answer:

4

Step-by-step explanation:

Answer:

Yup it’s 4

Step-by-step explanation:

Answer: C

Step-by-step explanation:

13-3=10

Answer:

1:16

Step-by-step explanation:

The ratio of the sides of similar figures is actually called a scale factor. The ratio of the areas is the scale factor squared

scale factor= 1:4

ratio of areas=1^2:4^2

=1:16

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