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a_sh-v [17]
3 years ago
14

Isaac is trying to solve the problem below. The length of a rectangle is 7 inches greater than the width. The perimeter is 70 in

ches. What is the width of the rectangle? Isaac solved an equation, and the solution was w = 14. He then made sure that a rectangle with width 14 inches and length 21 inches had a perimeter of 70 inches. Which problem-solving step was this?
Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0
Evaluation of result
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Write the prime factorization of 30. 
Ostrovityanka [42]
30|2
15|3
5|5
1

30=2\cdot3\cdot5
7 0
3 years ago
In your own words, explain the Normal Distribution and provide a real world example.
elena-14-01-66 [18.8K]

Answer:

The Normal distribution is a continuous probability distribution with possible values all the reals. Some properties of this distribution are:

Is symmetrical and bell shaped no matter the parameters used. Usually if X is a random variable normally distributed we write this like that:

X \sim N(\mu , \sigma)

The two parameters are:

\mu who represent the mean and is on the center of the distribution

\sigma who represent the standard deviation  

One particular case is the normal standard distribution denoted by:

Z \sim N(0,1)

Example: Usually this distribution is used to model almost all the practical things in the life one of the examples is when we can model the scores of a test. Usually the distribution for this variable is normally distributed and we can find quantiles and probabilities associated

Step-by-step explanation:

The Normal distribution is a continuous probability distribution with possible values all the reals. Some properties of this distribution are:

Is symmetrical and bell shaped no matter the parameters used. Usually if X is a random variable normally distributed we write this like that:

X \sim N(\mu , \sigma)

The two parameters are:

\mu who represent the mean and is on the center of the distribution

\sigma who represent the standard deviation  

One particular case is the normal standard distribution denoted by:

Z \sim N(0,1)

Example: Usually this distribution is used to model almost all the practical things in the life one of the examples is when we can model the scores of a test. Usually the distribution for this variable is normally distributed and we can find quantiles and probabilities associated

4 0
3 years ago
There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?
Len [333]
77 students
G : B
7 : 4

11 units (7+4) = 77
1 unit = 7

7 units = 49

so there are 49 girls in the student council

hope this helped :)
8 0
4 years ago
Write a numerical expression for the verbal expression. the difference of six and two divided by four
Ilia_Sergeevich [38]

Answer:

(6-2)/4

Step-by-step explanation:

Make sure you have the parenthesis

6 0
3 years ago
The sales tax on a used car is​ $168168​, and the sales tax rate is 55​%. Find the purchase price ​(the price before taxes are​
Naily [24]

Answer:

$92492.40

Step-by-step explanation:

168168.00 - 55% (75675.60)= $92492.40

7 0
4 years ago
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