Which scenario is represented by this equation? 1200 =3×+120

QUESTION POSTED AT 19/02/2020 - 06:08 PM

Answered by admin AT 19/02/2020 - 06:08 PM

G. is your answer have a nice evening
Post your answer

Related questions

Which graph represents the function y=1/2x+4 1/2-3

No graphs are shown......

ANSWERED AT 28/03/2020 - 12:59 PM


QUESTION POSTED AT 28/03/2020 - 12:59 PM

Write the equation for this table and if you can explain(not required)

I need help with the same stuff

ANSWERED AT 28/03/2020 - 12:57 PM


QUESTION POSTED AT 28/03/2020 - 12:57 PM

Find 3 solutions of the equation y=9×-4

Three solutions are: (2,14) (1,5) (3, 23)

ANSWERED AT 28/03/2020 - 12:44 PM


QUESTION POSTED AT 28/03/2020 - 12:44 PM

Which of the equations has a solution of 7. y - 41 = 48 m + 6= 1 z - 2 = 5 n + 50 = 30

The answer to th question is 7.

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

Which of the equations has a solution of 7. y - 41 = 48 m + 6= 1 z - 2 = 5 n + 50 = 30

The third one because you plug 7 in for z
Z-2=5 turns into 7-2=5 which is true

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

There are 10 boys and 13 girls in Ms. Kelso’s homeroom. She is going to select one boy and one girl to act as homeroom representatives for student council. How many different pairs of students could Ms. Kelso choose? A.) 10 B.) 23 C.) 130 D.) 230

The notation for this is {10 \choose 1} \cdot {13 \choose 1}.

Where you should know that {n \choose k} =  \frac{n!}{k!(n-k)!}

When choosing only one boy and one girl, it becomes simple-ish:

\frac{10!}{9!} \cdot \frac{13!}{12!} = 10 \cdot 13 = 130

So I would vote for C, hoping I didn't overlook anything...

ANSWERED AT 28/03/2020 - 12:41 PM


QUESTION POSTED AT 28/03/2020 - 12:41 PM

Hoshi walks 10 meters in 3 seconds. 1.What his her walking rate? 2. Suppose she walks this same rate for 50 seconds, how far does she walk? 3. Write an equation that represents the distance (d) that Hoshi walks in (t) seconds.

Her walk rate is 3.33 meter per sec you find this by dividing meters by seconds

Then you multiply this 3.33 by 50 you get 166.5 meters

d=t3.33 is the equation

ANSWERED AT 28/03/2020 - 12:39 PM


QUESTION POSTED AT 28/03/2020 - 12:39 PM

(08.01)Consider the following system of equations: y = 5x + 6 y = −x − 7 Which description best describes the solution to the system of equations?

If you want an answer to question: You can make the equations equal to each other and solve for x. So, since the y values are the same, we can do 
(+x)5x+6 = -x-7. (+x)
(-6)6x+6= -7(-6)
  (1/6) x 6x= -13 x (1/6)
x= -13/6
Substitute −13/6 for x in y=5x+6:
y=5x(−13/6) + 6
y = -29/ 6.
y= -29/6  and x= -13/6
 

ANSWERED AT 28/03/2020 - 12:37 PM


QUESTION POSTED AT 28/03/2020 - 12:37 PM

Krypton-91 is a radioactive substance that decays very quickly. The function Q(t)=Qoe^-kt models radioactive decay of krypton-91. Q represents the quantity remaining after t seconds and the decay constant k is approximately 0.07. How long will it take a quantity of krypton-91 to decay t o10% of its origional amount? round your answer to the nearest second.

Answer:

32.894 seconds ≈ 33 seconds

Step-by-step explanation:

Function : Q(t)=Q_0 e^{-kt}

The function models radioactive decay of krypton-91.

The decay constant k is approximately 0.07.

Q_0 denotes initial amount .

We are require to find How long will it take a quantity of krypton-91 to decay to 10% of its original amount

\Rightarrow 10\%\times Q_0

\Rightarrow 0.10\times Q_0

So, we neet to find t at which Q(t)=0.10 Q_0

0.10 Q_0=Q_0 e^{-0.07t}

0.10 =e^{-0.07t}

Taking log both sides

\log0.10 =-0.07t \log e

\log0.10 = -0.07t \times 0.434294481903

-1 = -0.0304006137332t

\frac{-1}{-0.0304006137332} = t

32.894= t

Thus it will take 32.894 seconds ≈ 33 seconds a quantity of krypton-91 to decay to 10% of its original amount.

ANSWERED AT 28/03/2020 - 12:28 PM


QUESTION POSTED AT 28/03/2020 - 12:28 PM

The following equation is a proportion 10/18 = 25/45 True or false

Yes the equation is true: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation. hope this helps.;)

ANSWERED AT 28/03/2020 - 12:24 PM


QUESTION POSTED AT 28/03/2020 - 12:24 PM

A teacher gave his students the four graphs below. Which graph represents a geometric sequence?

The arithmetic sequences always graph as points along a line.

In a geometric sequence, each term is equal to the previous term, multiplied (or divided) by a constant.

The  exponential functions have a very special property:

equal changes in the input cause the output to be successively multiplied by a constant.

Geometric sequences also have this same special property:geometric sequences always graph as points along the graph of an exponential function.

The sequence 6.25,12.5,25,50,100 is a geometric sequence  so its graph will represent a geometric sequence.


ANSWERED AT 28/03/2020 - 12:21 PM


QUESTION POSTED AT 28/03/2020 - 12:21 PM

A clerk in the sports department of a store is stacking tennis balls in the shape of a square pyramid. The top layer has 1 ball, the second layer has 4 balls, the third layer has 9 balls, and so on, as shown below. Which of the following represents the number of balls in the first 8 layers of the pyramid? A. a series that is arithmetic B. a series that is geometric C. a series that is neither arithmetic nor geometric D. a series cannot be used to represent this situation.

Answer:

It is a series that is neither arithmetic nor geometric

Step-by-step explanation:

We are given that The top layer has 1 ball, the second layer has 4 balls, the third layer has 9 balls, and so on,

The pattern is

1^2 = 1

2^2 = 4

3^2 = 9

4^2 = 16

n^2 is the pattern where n is the position in the series.

For arithmetic series Common difference: d=a_2-a_1=a_3-a_2

So,  d=4-1\neq 9-4

Thus it is not an arithmetic series .

For Geometric series there must be an common ratio : r = \frac{a_2}{a_1}=\frac{a_3}{a_2}

So, r = \frac{4}{1}\neq\frac{9}{4}

Thus it is not geometric series.

Thus Option C is correct.

It is a series that is neither arithmetic nor geometric

ANSWERED AT 28/03/2020 - 12:18 PM


QUESTION POSTED AT 28/03/2020 - 12:18 PM

A typical human body can hold up to 4 cups of food. write an inequality to represent how many cups of food a stomach can hold

X<= 4

x=cups
<= is less than or equal to

ANSWERED AT 28/03/2020 - 12:18 PM


QUESTION POSTED AT 28/03/2020 - 12:18 PM

A sequence can be defined by the explicit formula . Which recursive formula represents the same sequence of A. B. C. D.

Answer:

Option: C is the correct answer.

            C.  a_n=a_{n-1}-3\ ;\ a_1=2

Step-by-step explanation:

The sequence is given by the explicit formula as:

a_n=5-3n

where a_n is the nth term of the sequence.

Also, the first term of the sequence is: a_1

i.e.

a_1=5-3\times 1\\\\i.e.\\\\a_1=5-3\\\\i.e.\\\\a_1=2

Also,

a_n=5-3n\\\\i.e.\\\\a_n=5-3n+3-3\\\\i.e.\\\\a_n=5-3(n-1)-3\\\\i.e.\\\\a_n=a_{n-1}-3

   Hence, the recursive formula which represents the same sequence is:

                          Option: C

ANSWERED AT 28/03/2020 - 12:08 PM


QUESTION POSTED AT 28/03/2020 - 12:08 PM

How do you solve 25-24/4-1 pemdas? I couldn't find anything online about how to do pemdas when you're in this scenario.

The answer is:  18 .
_________________________


25 - 24/4 -1 = 25 - (24/4) - 1 = 25 - 6 - 1 = 19 - 1 = 18 .


The answer is:  18 .
_________________________

ANSWERED AT 28/03/2020 - 12:03 PM


QUESTION POSTED AT 28/03/2020 - 12:03 PM

Solve the equation 3 1/3 y + 7 = 19.

Y=31/36 calculating by the method subtraction and then cross multiplying

ANSWERED AT 28/03/2020 - 12:02 PM


QUESTION POSTED AT 28/03/2020 - 12:02 PM

System of equations how to for this problem?

Its 7y
 hope this helpeddd!

ANSWERED AT 28/03/2020 - 12:02 PM


QUESTION POSTED AT 28/03/2020 - 12:02 PM

Which of the following represents a geometric sequence? A. 1/4, 1/4, 1/4, 1/4 B. 1/4, 1/5, 1/6, 1/7 C. 1/4, 1, -4, 16 D. 1/4, -4, 1/4, -4

Answer:  Option 'A' is correct.

Step-by-step explanation:

Since we need to find the geometric sequence ,

For this we find the " common ratio" :

\frac{a_2}{a_1}=\frac{a_3}{a_2}\\\\\frac{\frac{1}{4}}{\frac{1}{4}}=\frac{\frac{1}{4}}{\frac{1}{4}}\\\\1=1

On the other hand, in options 'B' , 'C' and 'D' , there is no common ratio,

Hence, Option 'A' is correct.


ANSWERED AT 28/03/2020 - 12:00 PM


QUESTION POSTED AT 28/03/2020 - 12:00 PM

What is the value of x in the equation 3x − 31 = 76

3x-31=76
Solve for X
Add both sides by 31
3x=107
Divide both sides by 3
X=35.6666 or 35.67 rounded to the hundreths place or 36 rounded to whole numbers

ANSWERED AT 28/03/2020 - 12:00 PM


QUESTION POSTED AT 28/03/2020 - 12:00 PM