HELP HELP HELP HELP solve this

HELP HELP HELP HELP Solve This

Answers

Answer 1

Answer:

77

Step-by-step explanation:


Related Questions

Question:
The researcher wants to calculate the bacterial count in the dish after x hours of growth.
Fill in the values of A and b to write an exponential expression to model the number of bacteria in a colony that begins
with a single cell and doubles in size every hour

A(b)^x

Answers

Answer:

1(2)^x

Step-by-step explanation:

(^x means x is an exponent.)

Since the experiment begins with a single cell, the initial value, A, is 1. The population increases by a factor of 2 every hour, so the growth factor, b, is 2. Substitute the values of A and b in the general form of an exponential expression to create the expression modeling the number of bacteria in the colony after x hours.

A(b)^x=1(2)^x

          =2^x

The exponential expression to model the number of bacteria in a colony that begins with a single cell and doubles in size every hour is [tex]1 * 2^{x}[/tex].

What is exponential expression?

Exponential expressions are just a way to write powers in short form. The exponent indicates the number of times the base is used as a factor.

Let number of hours be x hours.

The bacterial count in the dish after x hours of growth is [tex]1 * 2^{x}[/tex].

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the angle between two radii of a circle is 130°. then the angle between the tangents at the end points of radius at their point of intersection is​

Answers

Answer:

the answer is =180° - 130° = 50°.

Step-by-step explanation:

Hope it helps

Answer:

50 degrees

Step-by-step explanation:

the sum of all angles in a four-sided shape is 360 degrees.

our four points here are :

the center of the circle

the 2 points on the circle, where the 2 tangents touch the circle

the intersection point of the tangents (where they cross each other).

at the 2 points, where radius meets tangent, we have a right angle or 90 degrees. so, they together take already 180 degrees.

the angle at the center of the circle is 130 degrees.

so, all that is left for the angle at the tangent intersection point is

360 - 180 - 130 = 50 degrees

Suppose that next year the U.S. will be in one of the following economic conditions: Boom, Moderate Growth, Recession, or Depression. The probability that each economic condition will occur, and that a jewelry store will earn profits within that broader economic condition are listed below:

Economic Condition Probability. Jewelry Store Profits
Boom 0.40 $400,000
Moderate Growth 0.30 $300,000
Recession 0.20 $100,000
Depression 0.10 -$500,000

The standard deviation of the jewelry store's profits next year is

Answers

24is the answer to the question

A 15-day supply of vitamins costs $1.74, what is the price in cents per day?

Answers

Answer:

it costs 12 cents per day.

Step-by-step explanation:

15 days cost $1.74

1 day then costs 1.74/15 = $0.116 ≈ $0.12

In a shoe factory, 2.4% shoes made are defective. If the company made 10,000 shoes then the number of defective pieces are

Answers

2.4/100x10,000=240

best of luck !

Which best explains whether a triangle with side lengths 2 in., 5 in., and 4 in. is an acute triangle?

The triangle is acute because 22 + 52 > 42.
The triangle is acute because 2 + 4 > 5.
The triangle is not acute because 22 + 42 < 52.
The triangle is not acute because 22 < 42 + 52.

Answers

9514 1404 393

Answer:

  The triangle is not acute because 2² + 4² < 5²

Step-by-step explanation:

The square of the hypotenuse of a right triangle with the given short sides would be 2² +4² = 20. So, that hypotenuse would be √20, about 4.47. The long side of this triangle is longer than that, so the angle opposite is larger than 90°. The triangle with sides 2, 4, 5 is an obtuse triangle.

  The triangle is not acute because 2² + 4² < 5²

The triangle is not acute because 22 + 42 < 52.

Option C is the correct answer.

What is a triangle?

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

To determine if a triangle is acute, we need to check whether all three angles of the triangle are acute angles (less than 90 degrees).

Pythagorean theorem,

- If the square of the length of the hypotenuse is greater than the sum of the squares of the other two sides, then the triangle is acute.

- If the square of the length of the hypotenuse is less than the sum of the squares of the other two sides, then the triangle is obtuse.

Now,

The triangle with side lengths 2 in., 5 in., and 4 in. is not a right triangle.

So we can't use the Pythagorean theorem directly.

Now,

We can check if the sum of the squares of the two shorter sides is greater than the square of the longest side.

2² + 4² = 4 + 16 = 20

5² = 25

Since 20 < 25, we know that the triangle is not acute.

Therefore,

The triangle is not acute because 22 + 42 < 52.

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Problem 12
Given 12 consecutive integers, in how many ways can three of these integers
be selected to give a sum which divides by 4?
A step by step explanation.

Answers

9514 1404 393

Answer:

  55

Step-by-step explanation:

Here's one way to count them.

12 consecutive integers will have 3 each of the integers whose value is 0, 1, 2, or 3 mod 4. To make a total that is 0 mod 4, any of these combinations of mod 4 values may be used:

  000 -- 1 combination

  013 -- 27 combinations, 3 each of mod 0, mod 1, and mod 3

  022 -- 9 combinations, 3 of mod 0, and 3 ways to choose 2 of mod 2

  112 -- 9 combinations, 3 of mod 2, and 3 ways to choose 2 of mod 1

  233 -- 9 combinations, 3 of mod 2, and 3 ways to choose 2 of mod 3

__

Consider the set of 12 consecutive integers 1 .. 12. Then here are the 9 "233" combinations. Mod 2 integers are 2, 6, 10, and mod 3 integers are 3, 7, 11.

  (2, 3, 7), (2, 3, 11), (2, 7, 11),

  (3, 6, 7), (3, 6, 11), (6, 7, 11),

  (3, 7, 10), (3, 10, 11), (7, 10, 11)

The total number of combinations that will be divisible by 4 is ...

  1 + 27 + 9 + 9 + 9 = 55 . . . . combinations with a sum divisible by 4

__

Additional comment

The number of ways that 3 can be chosen from 12 is 220, so this is 1/4 of that total. It is perhaps not surprising that the remainders from division by 4 are uniformly distributed among the possibilities.

A computer program to list the 220 subsets and the mod 4 remainders of their totals confirms this is the correct number.

There are  [tex]55[/tex]  ways of these integers be selected to give a sum.

Given that:

It has  consecutive integers .

Now,

Address the formula for  [tex]C(n,r)[/tex],

[tex]C(n,r)=\frac{n!}{(n-r)!n!}[/tex]

Here,

[tex]n=12,r=3[/tex]

      [tex]C(12,3)=\frac{12!}{(12-3)!3!} \\\\C(12,3)=\frac{12!}{9!3!} \\\\C(12,3)=\frac{12*11*10*9*8*7*6*5*4*3*2*1}{9*8*6*7*5*4*3*2*1*3*2*1} \\\\C(12,3)=\frac{12*11*10}{3*2*1} \\\\C(12,3)=4*5*11\\\\C(12,3)=220[/tex]

The sum [tex]mod 4[/tex]  of any given subset increases by [tex]1[/tex] when the set is “slid” to the left.

Every subset gives rise to all four values [tex]mod 4[/tex]  by sliding each of four places.

Since, The sum of the integer is divides by [tex]4[/tex].

Thus,

     [tex]220\div 4=55[/tex]

Hence, it has [tex]55[/tex] ways .

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Find X in the triangle. Round answer to the nearest TENTH of a degree (GIVING BRAINLEST TO BEST ANSWER :D ) ​

Answers

Answer:

x = 59,53445508

Tan(x) = 34/20

Step-by-step explanation:

Answer:

30÷20 degree x=n

Step-by-step explanation:

Mark me as brainliest

7 - 9m = 11
explain step by step​

Answers

Answer:

[tex]m=-\frac{4}{9}[/tex]

Step-by-step explanation:

Given:

[tex]7-9m=11[/tex]

Subtract 7 from both sides

[tex]-9m=4[/tex]

Divide both sides by -9 to get m alone

[tex]m=-\frac{4}{9}[/tex]

Hope this is helpful

in a club there are seven women and five men. A committee of 3 women and 2 men as to be chosen. how many different possibilities are there?​

Answers

Answer:

Step-by-step explanation:

HCF of the numbers divisible be
3 between 21 and 30 is ___​

Answers

Answer:

3

Step-by-step explanation:

Numbers between 21 and 30 divisible by 3 are 24 and 27. so you get the HCF of the two.

Mummy is 32 years older than her daughter, Aliyah. However, she is 8 years younger than daddy. The total age of the three of them is 144. What is daddy's age? 6​

Answers

Answer:

Father's age = 64 years

Step-by-step explanation:

Given:

Mummy's age = Aliyah's age + 32

Father's age = Mummy's age + 8

Tota age = 144

Find:

Father's age

Computation:

Assume;

Aliyah's age = a

So,

Mummy's age = a + 32

Father's age = a + 32 + 8

Father's age = a + 40

Aliyah's age + Mummy's age + Father's age = Total age

a + a + 32 + a + 40 = 144

3a + 72 = 144

3a = 144 - 72

3a = 72

a = 24

Father's age = a + 40

Father's age = 24 + 40

Father's age = 64 years

PLS HELP I WILL GIVE BRAINLIEST

Answers

Answer:

45 degrees

Step-by-step explanation:

The interior of a triangle always adds up to 180. Since one of them is a right angle, which is always 90 degrees, and two lines of the triangle are as long as eachother, 180-90 is 90 degrees, and that is divided by two, which is 45.

Which function is a translation of the parent absolute value function?
f(x) = 2x1
f(x) = |x+6| f(x)=|x| f(x)=-4|x|

Answers

15 + 36 greater-than 41, so the side lengths will form a triangle.

15 + 36 not-equals 41, so those lengths will not form a triangle.

15 squared + 36 squared = 1,521

41 squared = 1,681

Since a squared + b squared not-equals c squared, it will not be a right triangle.

15 squared + 36 squared = 297

41 squared = 82

Step-by-step explanation; did it on the website euphoria

The translation of the parent function is f ( x ) = | x + 6 | which is shifted 6 units to the left

How does the transformation of a function happen?

The transformation of a function may involve any change.

Usually, these can be shifted horizontally (by transforming inputs) or vertically (by transforming output), stretched (multiplying outputs or inputs), etc.

If the original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:

Horizontal shift (also called phase shift):

Left shift by c units: y=f(x+c) (same output, but c units earlier)

Right shift by c units: y=f(x-c)(same output, but c units late)

Vertical shift:

Up by d units: y = f(x) + d

Down by d units: y = f(x) - d

Stretching:

Vertical stretch by a factor k: y = k × f(x)

Horizontal stretch by a factor k: y = f(x/k)

Given data ,

Let the transformation of the function be a translation , where

The parent function is f ( x ) = | x |

And , the translated function is f ( x ) = | x + 6 |

So , original function is y = f(x), assuming the horizontal axis is the input axis and the vertical is for outputs, then:

Horizontal shift (also called phase shift):

Left shift by c units: y=f(x+c) (same output, but c units earlier)

And , the function is translated 6 units to the left

Hence , the translated function is f ( x ) = | x + 6 |

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Find the equation of the straight line that passes through the points (1, 10) and (3, 2)
ANSWER ASAP

Answers

Answer:

y = -4x + 14

Step-by-step explanation:

using the slope intercept form of a line

y = mx + c

Given points

1, 10 3, 2

slope (m) =

[tex] = \frac{y2 - y1}{x2 - x1} \\ = \frac{2 - 10}{3 - 1} \\ = \frac{ - 8}{2} \\ = - 4[/tex]

taking one point as for filling x and y and finding the y intercept (c)

y =mx + c

10 = (-4) × 1 + c

10 + 4 = c

14 = c

therefore the equation is

y = -4x + 14

Answer:

2y + 8x = 28

Step-by-step explanation:

Hi there

So we are going to solve this together

m = y - y1/y2- y1 =x - x1/x2 - x1

y - 10/ 2- 10 =x - 1/ 3 -1

y -10/-8 =x - 1/2

cross multiply

2(y - 10) =-8(x -1)

2y - 20= -8x + 8

Collect terms

2y +8x = 8 +20

ANSWER = 2y + 8x = 28

Hope this helps you!

Bye , have a nice day :-)

Does this graph show a function? Explain how you know.
PLZ HELP ASAPPP

Answers

Answer:

the correct answer is b

Step-by-step explanation:

a function can not have 2 of the same x values for a line on a graph as shown in the picture drawn that i have attached if you need a further explanation let me know

The figure below is made of 2 rectangular prisms.

What is the volume of this figure?

Answers

Answer:

6536 cubic in

Step-by-step explanation:

1. Split both the prisms apart- In doing so, you can simplify the problem.

2. Put in the #'s for the formula which in this case is V=L*W*H, we will start with the formula for the front one, V=7*8*1 or V=7*8

3. answer for the front is 56 cubic in, now we solve for the other half.

4. V=9*1*90 or V=9*90 which is 6480 cubic in.

5. add 6480 and 56 and your answer is 6536 cubic in as your answer.

Hope this helped ;D

what is the evaluation 7w -14 for w = 9

Answers

7(9)-14
63-14=51
Hope can help u

Answer:

7w - 14

if w = 9

7(9) - 9

63 - 9

w=57

PLEASE HELP!! graph the circle whose equation is (x-6)^2 + (y+2)^2 =4

Answers

Answer:

Y= -x^2+12x-36

Step-by-step explanation:

2 Nik owns a stationery shop.

She bought 72 pencils for a total cost of £4.68

Nik sells all 72 pencils for 15p each.

Work out Nik's percentage profit.

Give your answer correct to 1 decimal place.

Answers

Answer:

Nik's percentage profit was of 130.8%.

Step-by-step explanation:

Percentage profit:

Profit multiplied by 100% and divided by the price she bought.

Bought:

72 pencils for a total cost of £4.68

Sold:

72 pencils for £0.15 each, so:

72*0.15 = 10.8.

Profit of:

10.8 - 4.68 = 6.12

Percentage profit:

6.12*100%/4.68 = 130.8

Nik's percentage profit was of 130.8%.

Helppppp pleaseeee
Fill in the blank by entering just a number for your answer.

Answers

Check the picture below.

Help me calculate Lim for this lesson

Answers

Answer:

I'm acutally not too sure on this but give me a moment to solve this

Step-by-step explanation:

Analyze the graph below and complete the instructions as follows.

Answers

Answer:

Option A:

x^2 + (y - 2)^2 = 9

Step-by-step explanation:

We know that the equation for a circle centered in the point (a, b) and of radius R is given by:

(x - a)^2 + (y - b)^2 = R^2

So the first thing we need to find is the center of the circle.

We can see that the center is at:

x = 0

y = 2

Then the center is at the point (0, 2)

Now we want our circle to pass through point 2, located at a distance of 2 units from the radius of the first circle.

So the distance between the center and point 2 is 2 units plus the radius of the smaller circle:

And the radius of the smaller circle is one unit.

Then, the radius of a circle centered at (0, 2) that passes through point 2 is:

R = 1 + 2 = 3

Then we have a circle centered at (0, 2) and of radius R = 3

Replacing these in the equation for a circle we get:

(x - 0)^2 + (y - 2)^2 = 3^2

x^2 + (y - 2)^2 = 9

The correct option is A

Joseph borrows $10000 from his sister Katie at an annual interest rate of 10%. If the
interest is compounded twice a year, how much does he owe after 12 months? Give your answer in dollars.

Answers

Answer:

A  =  P  ( 1  + r / n)  ^( t * n)

where

A  =  the amt  owed

P  = amt borrowed

r  = the  interest  rate  as a decimal

n =  the  number of compoundings  per year

t  = the  number of years

A  =    10000  (  1  + .10  / 2)^(2 *1)    =   10000  ( 1.05)^2    =  $11025

Step-by-step explanation:

if a + b + c = 1, ab + bc + ca = -1 and abc = -1. find the value of a³+b³+c³​

Answers

Answer:

1

Step-by-step explanation:

→ If we know that 3 numbers need to multiply to make -1, it must be

1, 1 and -1

→ Then we just substitute this into a³ + b³ + c³

1³ + 1³ + (-1)³ = 2 - 1 = 1

A meteorologist records the number of clear days in a given year in each of 21 different U.S. cities. The results are shown below. Find the midrange. 72 143 52 84 100 98 101 120 99 121 86 60 59 71 125 130 104 74 83 55 169

Answers

Answer:

Midrange = 85 (Approx.)

Step-by-step explanation:

Given:

72 143 52 84 100 98 101 120 99 121 86 60 59 71 125 130 104 74 83 55 169

Find:

Midrange

Computation:

Number of data = 21

Midrange = [72 + 143 + 52 + 84 + 100 + 98 + 101 + 120 + 99 + 121 + 86 + 60 + 59 + 71 + 125 + 130 + 104 + 74 + 83 + 55 + 169] / 21

Midrange = 1,786/21

Midrange = 85 (Approx.)

john had a bag of 10 marbles (2 Green, 4 Blue, 1 Yellow, 2 Red) What is the probability that john selects a green marble, replaced it, and then selects a green marble?

Answers

Answer:

2/9

Step-by-step explanation:

the question didnt say replaced it with another colour

[tex]\int _{2.2}^{+\infty \:}\frac{10.648}{x^2}[/tex]

Answers

Step-by-step explanation:

[tex]\int _{2.2}^{+\infty \:}\frac{10.648}{x^2}dx = 10.648 \int _{2.2}^{\infty \:}\frac{dx}{x^2}[/tex]

[tex] = - \frac{10.648}{x} | _{2.2}^{ \infty} = 4.84[/tex]

Given F ( x ) = -2/3 x - 4 What is the zero of this function?

Answers

Answer:

-4

Step-by-step explanation:

f(0)=(-2/3)(0) - 4

= - 4

The perimeter of a rectangle is 58 inches and the area is 180 square inches. Find the dimensions of the rectangle.

Answers

Answer:

width = 9 inches

length= 20 inches

perimeter of the rectangle=2(9+20)

2w +2L= 2×29

=58 inches

area of the rectangle=L

=9×20=180 inch²

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