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3 years ago

Absolute value of −4.5

Mathematics

1 answer:

ddd [48]3 years ago

4 0

Answer:

Step-by-step explanation:

|a| = a for a ≥ 0

|a| = -a for a < 0

therefore

|-4.5| = -(-4.5) = 4.5

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In July 1986, a Canadian tourist changed CAN $2500 of her Canadian Travellers’ cheques for Trinidad and Tobago currency. She was

Lorico [155]

The answer is $5,000.73.
Explanation: If one Canadian dollar bill is $1.00 and a Trinidad’s $1.00 is $2.73 then that means if you wanna convert it you have to double the amount including the €73 and you have 2,500 you need to double the amount then add the remaining €73.

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3 years ago

Whatnis the greatest common factor of 7 and 19

viktelen [127]

7 and 19 are both prime numbers.

Factors of 7
1 * 7 = 7
7 * 1 = 7
factors are 1 and 7

Factors of 19
1 * 19 = 19
19 * 1 = 19
factors are 1 and 19

GCF = greater common factor
So GCF is 1 because there is no greater common number in the 7 and 19

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4 years ago

Assume that when adults with smartphones are randomly selected, 57% use them in meetings or classes. If 8 adult smartphone use

maxonik [38]

Answer: 0.0575

Step-by-step explanation:

Binomial probability distribution :-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where P(X) is the probability of getting success in x trials, n is the total number of trials and p is the probability of success in each trial ( in decimal ).

Given : The probability that adults use smartphones in meetings or classes = 0.57

Sample size : n= 8

Now, the probability that exactly 2 of them use their smartphones in meetings or classes :-

$P(x)=^8C_2(0.57)^2(0.43)^{6}\\\\=\dfrac{8!}{(8-2)!2!}(0.57)^2(0.43)^{6}\\\\=0.0575067039294\approx0.0575$

Hence, the required probability = 0.0575

6 0

3 years ago

The Thundering Herd, an amusement park ride, is not open to patrons less than 54" tall. If the mean height of park patrons is 68

just olya [345]

Answer:

Step-by-step explanation:

Let X be the mean height of peak patrons,

Then X is normal with mean = 68 inches and std dev = 12 inches

Whenever x<54, they are not allowed to use the ride.

x=54 means z=

The z for 54" is $\frac{54 - 68}{12} =-1.17$

From std normal table we find that the area to the left of -1.17 is

0.3790

P(X>54) =1-0.3790

=0.6210=62.10%

P(54<x<68) = 0.5-0.3790 =0.121=12.1%

P(X>68) =0.5%=50%

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3 years ago

You sit down to read a book and the phone rings on five occasions. You assume if you sit

Sergeeva-Olga [200]

Answer:

u eat

Step-by-step explanation:

nice

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3 years ago