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2 years ago

Chris says that the expression 4n - 2 can be written as 2(2n - 1). Do you agree? Explain your answer.

Mathematics

1 answer:

Ksju [112]2 years ago

3 0

Answer:

Correct

Step-by-step explanation:

The given expression is : 4n - 2

Chris says that the expression (4n-2) can be written as 2(2n - 1).

Taking 2 common on the given expression.

(4n-2) = 2(2n-1)

Hence, he has wrote it in a correct way.

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The amount of bacteria in a petri dish increases at a rate proportional to the amount present. At time t=0, the amount of bacter

Lilit [14]

Answer:

Step-by-step explanation:

Formula to be used is N=N0e^(kt)

N0 - amount of bacteria at time 0, which is 10g

t=2, 30g

30 = 10*e^(k*2)

3 = e^(2k)

2k = ln3

k = 0.5ln3

At t=6:

N = 10*e^(0.5ln3*6)

N = 10e^(3ln3)

N = 10e^ln27

N = 10*27 =270

So the amount of bacteria at t=6 is 270

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3 years ago

a five question multiple choice quiz has five choices for each answer. use the random number table provided, with 0's representi

Montano1993 [528]

The experimental probability of correctly guessing at random exactly zero correct answers is (4/5)⁵

<h3>What is Probability?</h3>

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Here, total multiple choice quiz = 5 questions

Each question contains 5 choices in which 1 choice is correct and remaining 4 are incorrect.

Possibility of first wrong choice = 4/5

Possibility of second wrong choice = 4/5

Possibility of third wrong choice = 4/5

Possibility of fourth wrong choice = 4/5

Possibility of fifth wrong choice = 4/5

Overall probability for Zero correct answer=(4X4X4X4X4)/(5X5X5X5X5)

= (4/5)⁵

Thus, the experimental probability of correctly guessing at random exactly zero correct answers is (4/5)⁵

Learn more about Probability from:

brainly.com/question/11234923

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4 0

2 years ago

A restaurant has fixed costs of $147.50 per day and an average unit cost of $5.75 for each meal served. If a typical meal costs

Nikolay [14]

Answer:

The answer is 118.

Step-by-step explanation:

First we need to subtract the meal cost from average unit cost for each meal:

$7-5.75=1.25$

A restaurant profits 1.25$ for each meal. If we divide fixed cost to profit for each meal:

$147.5/1.25=118$

The restaurant have to sell 118 meals at least each day for the owner to break even

5 0

3 years ago

how do i find the volume of a triangular prism that has a 10m width a 4m base and a 8m hight don't worry about the T

Alecsey [184]

The volume of a triangular prism is equal to :
area of the base x height

the area of the base :
$10 \times 4 \div 2 = 40 \div 2 = 20$

so the volume is
$20 \times 8 = 160$

the answer is 160m^3

good luck

3 0

3 years ago

12'<br>Given that tan x =<br>sin x + cos x?<br>î, what is the value of<br>(WAEC]

Andre45 [30]

Answer:

$\tan(x) = \sin(x) + \cos(x)$

Sorry but your question is not too explanatory but I sure hope this helps

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3 years ago