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3 years ago

Is the area of a key on a calculator 6.5 mm^2 , 65 mm^2 or 0.65 cm^2?

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

3 0

Answer:

65 $mm^2$ or 0.65 $cm^2$ which are exactly the same area

Step-by-step explanation:

Notice that 65 $mm^2$ is exactly the same as 0.65 $cm^2$ .

The most likely answer is 65 $mm^2$ , since 8 mm by 8 mm is a reasonable size for a square shaped key of a hand-held calculator to fit a human finger.

The answer 6.5 $mm^2$ is an area too small (about a square 3 mm by 3 mm which is to small for a human finger. It would be more appropriate for a pen or point of some type.

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Which of the following is NOT a Pythagorean triangle?

Paladinen [302]

Answer:

Step-by-step explanation:

you have to be able to add two legs of the triangle and it equal more than your 3rd leg

6 0

2 years ago

For each day in New England, the probability that it is mostly cloudy is 0.10 . Cindi is planning to go leaf watching, and her f

kolbaska11 [484]

Answer:

0,37

Step-by-step explanation:

It will be easier if we noun the events.

A= Cindi's friend comes to England.

B= New England is mostly cloudly.

We are searching the probability of just A doesn´t happen or just A happens but not B.

The probability of A doesn´t happen is one minus the probability of A:

$=(A^{|} )=1-P(A)=1-0.7=0.3$

The events A and B are independent for this reason the probability than both occurs is the product of the probability of each event. It means:

$P(A \cap B)= P(A)P(B)=0.1*0.7=0.07$

The probability of A doesn´t happen or A and B happen is:

$P(A^{|} \cup (A \cap B))= P(A^{|} )+P (A \cap B)-P(A^{|} \cap A\cap B)=0.3+0.07-0=0.37$

Conclusively we have to rest the probability of A doesn´t happen and A and B happen, but A happens and doesn´t happen and the same time is impossible. For this reason, we have the same result.

$P(A^{|} \cup (A \cap B))-P(A^{|} \cap A\cap B)=0.37-0=0.38$

Then the probability either Cindi's friend does not come to New England, or she does come but it is mostly cloudy is 0.37

8 0

3 years ago

I need help with this

Svet_ta [14]

you cant do that because they are not like terms

5 0

3 years ago

Find three consecutive integers such that three times The largest increased by two is equal to five times the smallest increased

rosijanka [135]

$a,a+1,a+2-\ three\ consecutve\ integers\\\\
3*(a+2)+2=5*(a+3)+3(a+1)\\\\
3a+6+2=5a+15+3a+3\\\\
3a+8=8a+18\ \ \ | subtract\ 3a\\\\
8=5a+18\ \ \ \ | subtract\ 18\\\\
-10=5a\ \ \ \ | divide\ by\ 5\\\\
a=-2\\\\Numbers\ are:\ \ -2,-1,0
$

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4 years ago

Alexis says she is thinking about a number whose absolute value is 19. What are the possible numbers she could be thinking of?

Grace [21]

Answer:

I do not understand give a genuine question

4 0

3 years ago