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vaieri [72.5K]
3 years ago
12

Harold bought 20 toys for his nieces and nephews. The least expensive toy cost $8.21, and the most expensive toy cost $13.79. Wh

ich is the best estimate for the total amount Harold spent on the toys he bought for his nieces and nephews? A. $283.00 B. $400.00 C. $158.00 D. $220.00
Mathematics
2 answers:
Luden [163]3 years ago
6 0
D I believe is the correct answer
Usimov [2.4K]3 years ago
3 0
The logical answer would be d

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Select all instances in which the variable described is binomial.
tino4ka555 [31]

Answer: a. , c. , d., e.

Step-by-step explanation:

A variable that counts how many times a certain event occurs in a particular number of trials is known as binomial random variable.

For each trial, there exist only two outcomes .

The probability of for each event is the same on each trial.

a.  Event has two outcomes with same probability as 0.50, therefore the  random variable represents the total number of flips required to get tails is a binomial random variable.

b. Total guidelines are 5.

Here total outcomes are not 2 , it does not meet with the conditions of binomial.

c. The random variable represents the total number of children from this pair of parents with blue eyes has two outcomes (where has or not.)

also, the probability of having blue eyes is same in each trial, so it represents binomial random variable.

d. The random variable represents the total number out of 567 customers with a checking account has two outcomes (checking or savings).

So, it represents binomial random variable.

e. The random variable represents the total number of ace cards observed has two outcomes ( ace or not ace).

So it represents the binomial random variable.

7 0
3 years ago
You rode a bicyde for 2 hours and travelled 43 km, calculate your average<br>speed.​
cupoosta [38]

Answer:

22.5km per hour

Step-by-step explanation:

5 0
3 years ago
Which fraction is in the simplest form of 224/360?
barxatty [35]
28/35 which u can't go any further than this bc 35 isn't divisible by 2 nor is 28 divisible by 5 
5 0
2 years ago
Round 202.366 to the nearest hundredth
GuDViN [60]
Hello there,

202.366 to the nearest hundredth would be 202.37.

So what I did was I look at the 366 in the problem.

We want to round the to the nearest hundredth.

So what we would do it notice how the 66 in over 50.

The rule is if it's over 50, we round it to the nearest.

So your answer would be 202.37.

Hope this helps.

~Jurgen
3 0
3 years ago
Scale a rectangle that has length 9 inches and width 17 inches by the scale factor determine the dimensions of the scaled rectan
emmasim [6.3K]

Answer:

The dimensions of the scaled rectangle are

6.3\ in of length by 11.9\ in of width

Step-by-step explanation:

we know that

The scale factor is equal to 70\%

Remember that

70\%=70/100=0.70

The scale factor is less than 1

so

the dilation is a reduction

To find the dimensions of the scaled rectangle multiply the dimensions of the original rectangle by the scale factor

9*0.7=6.3\ in

17*0.7=11.9\ in

4 0
3 years ago
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