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1 year ago

PLEASE HELP ME I WILL GIVE BRAINLEST

Mathematics

1 answer:

alukav5142 [94]1 year ago

5 0

Answer:

$1\frac{2}{3}$

Step-by-step explanation:

$2\frac{1}{2} * \frac{2}{3}$

$\frac{5}{2} *\frac{2}{3}$

$\frac{10}{6}$

$\frac{5}{3}$

$1\frac{2}{3}$ .....<em>final answer.</em>

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A thief steals an ATM card and must randomly guess the correct five-digit pin code from an 8 key keypad repetition of digits is

Rus_ich [418]

Answer:

1/32768

Step-by-step explanation:

We have 5 digit pin code plots and 8 choices per slot. Because repetition is allowed (1 digit can have 8 choices) so we multiply out the number of choices per slot . Hence:

8*8*8*8*8 = $8^{5} = 32768$

So there are 32768 different combination.

But correct guess on the first try is just only 1 time, so its' probability:

1/32768

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3 years ago

I WILL GIVE BRAINLIEST PLEASE HELP

irina1246 [14]

Answer:

Part I

4.8% compounded semiannually means 4.8%/2 = 2.4% per 6 month period

Part II

Period is 6 months, so 2 periods in a year and 2*8 = 16 periods in 8 years

Part III

A = $12200*(1 + 0.024)^16

Part IV

A = $12200*(1 + 0.024)^16 = $17830.32

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3 years ago

Your friend claims that it is possible to draw a right triangle where the cosine of either angle (theta) is exactly the same val

avanturin [10]

Answer:

B. No

$Cos \ \theta\neq Cos (90-\theta)\textdegree$

Step-by-step explanation:

-A right angle triangle has two complimentary acute angles and one right angle.

- $\theta$ is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.

-Complimentary angles add up to 90º.

#For complimentary angles:

$Sin \ \theta=Cos \ (90-\theta)\textdegree\\\\Cos \ \theta=Sin(90-\theta)\textdegree\\\\\therefore Cos \ \theta\neq Cos (90-\theta)\textdegree$

The two acute angles cannot have the same Cosine value.

Hence, she's not correct.

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3 years ago

What happened to the U.S. dollar when President Nixon closed the gold<br> window?

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He announced that the US would no longer convert dollars to gold at fixed value

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2 years ago

The travel time for a plane traveling at a rate of r kilometers per hour for 290 kilometers

Lapatulllka [165]

Time = distance / rate
time = 290 / rate

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3 years ago