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3 years ago

The value of -4^2 is _____. 16 -16 8 18

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

5 0

16 because two negatives numbers equal a possitive so 16

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The following data summarizes results from 945 pedestrian deaths that were caused by accidents. If one of the pedestrian deaths

VikaD [51]

Answer:

37.67% probability that the pedestrian was intoxicated or the driver was intoxicated.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

In this question:

945 accidents.

In 64 of them, the pedestian was intoxicated.

In 292 of them, the driver was intoxicated.

Probability that the pedestrian was intoxicated or the driver was intoxicated.

(64+292)/945 = 0.3767

37.67% probability that the pedestrian was intoxicated or the driver was intoxicated.

6 0

3 years ago

At the moment a certain medicine is injected, it’s concentration in the bloodstream is 120 milligrams per liter. From that momen

PSYCHO15rus [73]

Answer:

C(t)=120(0.7)^t

Step-by-step explanation:

4 0

4 years ago

Expand each expression

matrenka [14]

Answer:

Option B - $\ln(\frac{4y^5}{x^2})=\ln 4+5\ln y-2\ln x$

Step-by-step explanation:

Given : Expression $\ln(\frac{4y^5}{x^2})$

To find : Expand each expression ?

Solution :

Using logarithmic properties,

$\ln (\frac{A}{B})=\frac{\ln A}{\ln B}=\ln A-\ln B$

and $\ln (AB)=\ln A+\ln B$

Here, A=4y^5 and B=x^2

$\ln(\frac{4y^5}{x^2})=\frac{\ln 4y^5}{\ln x^2}$

$\ln(\frac{4y^5}{x^2})=\ln 4y^5-\ln x^2$

$\ln(\frac{4y^5}{x^2})=\ln 4+\ln y^5-\ln x^2$

Using logarithmic property, $\logx^a=a\log x$

$\ln(\frac{4y^5}{x^2})=\ln 4+5\ln y-2\ln x$

Therefore, option B is correct.

3 0

3 years ago

Read 2 more answers

Lucy had half as much money as Mel, but since grandma gave them each $20 she now has three-fifths as much. How much money does L

Elan Coil [88]

Answer:

Lucy has $60

Step-by-step explanation:

Mel had 80

Lucy had 40

Now Mel has 100

and Lucy has 60

60/100 = 3/5

5 0

4 years ago

Plz answer this and explain how

Dahasolnce [82]

Answer:

Option H, π/3 and 2π/3

Step-by-step explanation:

sin x = sqrt(3) / 2

<em>It happens at 60 degrees and 120 degrees. In radians, it is π/3 and 2π/3</em>

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Answer: Option H, π/3 and 2π/3

8 0

3 years ago