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olya-2409 [2.1K]
3 years ago
15

The place value disk model is showing 67 ÷ 4.

Mathematics
1 answer:
exis [7]3 years ago
3 0

Answer:

The 2 tens remaining get decomposed into 20 ones in the ones column.

Step-by-step explanation:

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Hi anyone tell me the answer
Ivahew [28]

Answer:

(1,B) (1,R) (2,B) (2,R) (3,B) (3,R)

5 0
3 years ago
Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.
Schach [20]

Answer:

1) FALSE

2) FALSE

3) TRUE

4) TRUE

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part 1

The mean and standard deviation of a normally distributed random variable which has been standardized are one and zero, respectively.

The mean and the deviation for  the normal standard distribution are:

\mu=0, \sigma =1

So then that's FALSE.

Part 2

Using the standard normal curve, the z−score representing the 10th percentile is 1.28.

We are looking for a value a, that satisfy this:

P(X>a)=0.90   (a)

P(X   (b)  

We can find a z value that satisfy the condition with 0.10 of the area on the left and 0.90 of the area on the right it's z=-1.28. On this case P(Z<-1.28)=0.10 and P(Z>-1.28)=0.90

So that's FALSE.

Part 3

Let z1 be a z−score that is unknown but identifiable by position and area. If the symmetrical area between −z1 and +z1 is 0.9544, the value of z1 is 2.0

If we find this probability:

P(-2.0< Z

So on this case we can approximate to 0.9544. And that's TRUE.

Part 4

Using the standard normal curve, the z−score representing the 75th percentile is 0.67.

We are looking for a value a, that satisfy this:

P(X>a)=0.25   (a)

P(X   (b)  

We can find a z value that satisfy the condition with 0.75 of the area on the left and 0.25 of the area on the right it's z=0.67. On this case P(Z<0.67)=0.75 and P(Z>0.67)=0.25

So that's TRUE.

3 0
3 years ago
In a right angle triangle the side lengths are 4 and 2. Please find the hypotenuse. You can answer this in radical form OR give
Ghella [55]

Answer:

4.47

Step-by-step explanation:

A squared + B squared = C squared

4*4=16 2*2=4  16+4=20  

the square root of 20 is 4.472135955, rounded to the nearest hundreth is 4.47

7 0
3 years ago
Convert 35% into a decimal and a fraction. Show/explain your strategy.
Aloiza [94]

Answer:

Below.

Step-by-step explanation:

35% as a decimal can be written as 0.35. Because it is 0.35 out of 1.00 or 0.35%.

As a fraction, you could write it as 35/100 because its 0.35 or 35/100

6 0
2 years ago
Read 2 more answers
Solve for x<br> 11(x - 4) = 5(x+3)
Pavel [41]

Answer:

5 9 /6

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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