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Vlad [161]
3 years ago
12

PLEASE HELP!!! HSJSHGXDBSJHCBDSHDCB PLEASEE

Mathematics
2 answers:
KatRina [158]3 years ago
7 0

Answer:

the answer is 30

............................

djyliett [7]3 years ago
6 0

Answer:

you can give her brainliest now c:

Step-by-step explanation:

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Craig scored 12 points in a game. Marla scored twice as many points as craig but 5 fewer points than Nelson scored. Write an exp
marin [14]
Craig has 12 points, if Marla has twice as many that means she has 24, since she has 24 which is is 5 fewer than Nelson we must add 5 to Marla's 24 points, giving us 29 for Nelson.
3 0
3 years ago
Read 2 more answers
In a lab, a colony of 100 bacteria is placed on a petri dish. The population triples every hour.
Evgesh-ka [11]

Answer:

a). 8100 bacteria

b). 519 bacteria

c). Infinite

Step-by-step explanation:

Population growth of a bacteria is given by the exponential function,

f(x) = P_{0}(1+\frac{r}{100})^{t}

Where f(x) = Population after time 't'

P_{0} = Initial population

r = Growth rate

t = Duration after t hours

If "100 bacteria gets tripled every hour"

300 = 100(1+\frac{r}{100})^{1}

3 = 1 + \frac{r}{100}

r = 100×(3 - 1)

r = 200

So the function is, f(x) = 100(3)^{t}

a). Population after 4 hours,

    f(4) = 100(3)^{4}

          = 8100 bacteria

b). Population after 90 minutes Or 1.5 hours

     f(1.5) = 100(3)^{1.5}

             = 519.61

             ≈ 519 bacteria

c). Population after 72 hours,

    f(72) = 100(3)^{72}

            = Infinite

4 0
3 years ago
In the picture down below
Nady [450]

Answer:

b

Step-by-step explanation:

The answer is b because we are looking for opposites

The opposite of +x is -x

While the opposite of -3 is +3

with this, we can switch them around.

this gives us the inverse of 3-x

4 0
3 years ago
I need help ASPA with these two questions!!! <3 GIVE THANKS
cestrela7 [59]

Answer:

Part 1) Is a cubic expression

Part 2) The quadratic expression is 12x² + 8x − 1

Step-by-step explanation:

Part 1) Classify the expression: 5x³ + 2x − 3

we know that

Polynomials can be classified two different ways - by the number of terms and by their degree.

so

a) <u>By the number of terms</u> is a trinomial, because has three terms

b) <u>By their degree</u> The degree of the polynomial is found by looking at the term with the highest exponent on its variable

The highest exponent is 3 so this is a 3rd degree trinomial  

therefore

Is a cubic expression

Part 2) Choose the expression that represents a quadratic expression

we know that

If the expression is a quadratic equation , then the highest exponent of the variable is 2

therefore

The quadratic expression is 12x² + 8x − 1

6 0
3 years ago
Read 2 more answers
Assume that we have two events, A and B, that are mutually exclusive. Assume further that we know P(A) = 0.3 and P(B) = 0.7. If
Thepotemich [5.8K]

Answer:

See below

Step-by-step explanation:

What is P(A B)?

If A and B are mutually exclusive, then  

P(AB) = P(A∩B) = P(∅) = 0

What is P(A | B)?

By definition  

<em>P(A | B) =  P(A∩B)/P(B). </em>

Since  

P(A∩B) = 0, then P(A | B) = 0

Is P(A | B) equal to P(A)?

No, because P(A | B) = 0 and P(A) = 0.3

Are events A and B dependent or independent?

A and B would be independent if

P(A | B) = P(A) and P(B | A) = P(B)

But both P(A |B) and P(B | A) equals 0 and P(A) = 0.3, P(B) = 0.7

Hence, <em>A and B are dependent. </em>

A student in statistics argues that the concepts of mutually exclusive events and independent events are really the same, and that if events are mutually exclusive they must be independent. Is this statement accurate?

No, it is not.

As we already saw, A and B are mutually exclusive but they are not independent.

What general conclusion would you make about mutually exclusive and independent events given the results of this problem?

If A and B are not empty events which are mutually exclusive, they can never be independent.

6 0
3 years ago
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