Help! I don't understand this.

Answer:

its answer is option c .

hope it helps :)

Step-by-step explanation:

Answer:

a) (4, 7) b) (-4,-7)

Step-by-step explanation:

please mark brainliest

Complete Question

After a special medicine is introduced into a petri dish containing a bacterial culture, the number of bacteria remaining in the dish decreases rapidly. The number of bacteria decays by a factor of 1/15, every 6.76minutes, and can be modeled by a function, N, which depends on the amount of time, t (in minutes). Before the medicine was introduced, there were 90,000 bacteria in the Petri dish. Write a function that models the number of bacteria t minutes since the medicine was introduced.

Answer:

Nt = 90,000 × e^t/15

Step-by-step explanation:

The function that models the number of bacteria t minutes since the medicine was introduced is written as

Nt = No×e^λt

Where:

No = The initial number of the bacteria after time t

Nt = The current number of the bacteria after time t

λ = Decay constant or factor

t = Time in years

From the question,

No = 90,000 bacteria

Nt = The current number of the bacteria after time t

λ = 1/15

t = Time in years

Therefore, our function is written as:

Nt = 90,000×e^1/15 × t

Nt = 90,000 × e^t/15

Answer:

90,000*(1/15)^t/6.7

Step-by-step explanation:

Khan told me it's correct.

Answer:

10

Step-by-step explanation:

Angle α in the given problem comes to be 125°.

∠ATC =70°(given)

Suppose the center of the circle is O while both the tangents intersect at T.

As we know quadrilateral ATCO is a cyclic quadrilateral because a quadrilateral constructed by tangents, corresponding points of tangency, and the center of a circle is a cyclic quadrilateral.

A quadrilateral with all its vertices on the circumference of the circle is called a cyclic quadrilateral. The sum of opposite angles is always 180° in a cyclic quadrilateral.

So, ∠AOC = 180 - ∠ATC

∠AOC = 180 - 70

∠AOC = 110°

We know that angle made by an arc at the circumference is half of the angle made by the same arc on the center.

So, ∠ABC = 110/2 = 55°.

Quadrilateral ABCD is a cyclic quadrilateral

So, α =180- ∠ABC

α =180-55

α=125°

Therefore, angle α in the given problem comes to be 125°.

To get more about the cyclic quadrilateral visit:

https://brainly.com/question/24142962

Answer:

x = 23

Step-by-step explanation:

The measures of the angles in a triangle add up to equal 180

That being said we can create an equation to solve for x

180 = 2x + 3x + 1 + 3x - 5

Now we solve for x using basic algebra

step 1 combine like terms

2x + 3x + 3x = 8x

1 - 5 = -4

now we have 180 = 8x - 4

step 2 add 4 to each side

-4 + 4 cancels out

180 + 4 = 184

now we have 184 = 8x

step 3 divide each side by 8

8x/8=x

184/8=23

we're left with x = 23

Answer:

we have

C=(2,-1)

B=(-2,3)

since

BC is hypotenuse

length of BC=√[(-2-2)²+(3+1)²]=√32=4√2 units is your answer

Answer:

hi.............,,,,,........

Answer:

-46

Step-by-step explanation:

2x+43=2x-3

We simplify the equation to the form, which is simple to understand

2x+43=2x-3

We move all terms containing x to the left and all other terms to the right.

+2x-2x=-3-43

We simplify left and right side of the equation.

0x=-46

0=-46

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

Answer:

13.7

Step-by-step explanation:

13.7+90+70+6= 179.7 when you round it is 180

Answer:c

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

delta math

Answer:

30?

Step-by-step explanation:

If y is 30 and x = y. Then wouldn't x be 30 HOWEVER I'm unsure what the other part of the equation is.

Answer:

X=-2

Step-by-step explanation:

equation a)

-y=42+18x

equation b)

y= (-43x+34)/20

Solution

42+18x= (-43x+34)/20

20(42+18x)=-43x+34

840+360x = -43x+34

360x+43x=34-840

403x= -806

x= -(806/403)

x= -(2)

x= -2

The angles surrounding the point p are 90 degrees

Then using the angle given, find the missing angles.

JPH = 90

HJP = 49

90+49 = 139

180 - 139 = 41

Therefore JHP = 41

HLP = HJP = 49

HLP = 49

KLP = 72

KLP + HLP = 72 + 49 = 121

Therefore, HLK = 121

LP = JP = 16

JP = 16

HL = HJ = 13

HL = 13

Hope this helps! =)

Answer: $812.192

Step-by-step explanation:

The price of the bond will be gotten by multiplying the par value by the price quote. This will be:

Price of bond = Par value × Price quote

Price of bond = $800 × 101.524%

Price of bond = $800 × 1.01524

Price of bond = $812.192

Therefore, the price of the bond is $812.192.

Hello!

Lets go through each choice, and determine if it is correct.

So, the symbol ≤, means less than or equal to. So our answer must be less than -75 or -75 on the dot.

A: y = 75

Okay, so we can tell this one is wrong off the bat. 75 is much more than -75. (Make sure you notice the symbol!) So it cannot be equal to said answer. A is wrong.

B: y =-74

Another trick question! When you are in the negatives, less is more! So -74 is actually greater than -75. This is also incorrect!

C: y > -75

This one is straight forward. Our equation up top strictly says less than or equal too, while C says greater than. Incorrect!

D: y = -75

The last answer! We see that the symbol in our equation up top says less than or equal too, and y = -75 is equal. This is the correct answer.

Our correct answer is D: y = -75

waffletowne

Answer:

1 min 36 sec

Step-by-step explanation:

You might approach the answer in this way:

60.6 minutes = 60 minutes + 0.6 minutes, remembering that 1 min = 60 sec

                                                0.6 min      60 sec

Then we have 60 minutes + ------------- * -------------- = 1 min 36 sec

                                                      1               1 min

Answer:

1 minute, and 36 Seconds

Step-by-step explanation:

Step-by-step explanation:

Subtract the numbers

9

(

5

−

3

)

+

9

9({\color{#c92786}{5-3}})+9v

9(5−3)+9v

9

(

2

)

+

9

9({\color{#c92786}{2}})+9v

9(2)+9v

2

Multiply the numbers

9

⋅

2

+

9

{\color{#c92786}{9}} \cdot {\color{#c92786}{2}}+9v

9⋅2+9v

1

8

+

9

{\color{#c92786}{18}}+9v

18+9v

3

Rearrange terms

1

8

+

9

{\color{#c92786}{18+9v}}

18+9v

9

+

1

8

{\color{#c92786}{9v+18}}

9v+18

Solution

9

+

1

8

Answer:

Hey mate......

Step-by-step explanation:

This is ur answer....

Hope it helps!

Brainliest pls....

Follow me! ;)

Answer:

B

Step-by-step explanation:

Subtracting 3 from the product of 8 and 5 means that the 8 and 5 need to be multiplied first.

Brackets, in the order of operations, come before other operators, other than square root, square, and the like. In general, multiplication and division would be done before subtraction, so the bracket goes over 5 x 8 and not 8 - 3.

Answer:

3, 1, 2

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

1.) 10.5

2.) 3[tex]\pi[/tex] + 1

3.) [tex]\sqrt{105}[/tex]

Step-by-step explanation:

Simplify each first

3[tex]\pi[/tex] + 1 ≈ 10.42

[tex]\sqrt{105}[/tex] ≈ 10.25

10.5

Order

1.) 10.5

2.) 3[tex]\pi[/tex] + 1

3.) [tex]\sqrt{105}[/tex]

Answer:

Step-by-step explanation:

Touching angles have to equal  the full amount of degrees. This means oppisite angles are the same so 7/6, 5/8, 1/4, 2/3. This then means that 1/4 and 5/8 are the same. 3 and 5 would add up to the full amount of a flat line. 2 and 7 could as well, but diffrently (i dont remebr the terms lol). 6/8 would be supplementary, but wouldnt show that the lines are parrlele. Nether would D, as it is true but not helpful.  B seems the most likely at this point with a being a close second. I am so sorry I couldnt be more helpful

Answer:

The answer would be b ;0

Answer:

is the name of your account from little mermaid?  :DDD

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

now just refer to the above ( also copy and paste the above on your computer some where so you have it always)

sin( D )= 28 / 53

sin( E ) = 45 / 53

cos(D) = 45 / 53

cos(E) = 28 / 53

Answer:

k>8

Step-by-step explanation:

k more than 8 indicates that the value of k is larger than 8. So the inequality sign opens towards k and closes towards 8.

Hope this helps!

Answer:

9 is bigger than 8

Step-by-step explanation: