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Juli2301 [7.4K]
3 years ago
8

Help help help !!!!! Thanks

Mathematics
2 answers:
velikii [3]3 years ago
7 0
5×5=25 it's a pattern
STatiana [176]3 years ago
6 0
The next line will be 5x5=25
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SAT scores have a mean of 1026 and a standard deviation of 209. ACT scores have a mean of 20.8 and a standard deviation of 4.8.
Y_Kistochka [10]

Answer:

The z-score for SAT exam of junior is much small than his ACT score. This means he performed well in his ACT exam and performed poor in his SAT exam.

Step-by-step explanation:

Mean SAT scores = 1026

Standard Deviation = 209

Mean ACT score = 20.8

Standard Deviation = 4.8

We are given SAT and ACT scores of a student and we have to compare them. We cannot compare them directly so we have to Normalize them i.e. convert them into such a form that we can compare the numbers in a meaningful manner. The best way out is to convert both the values into their equivalent z-scores and then do the comparison. Comparison of equivalent z-scores will tell us which score is higher and which is lower.

The formula to calculate the z-score is:

z=\frac{x-\mu}{\sigma}

Here, μ is the mean and σ is the standard deviation. x is the value we want to convert to z score.

z-score for junior scoring 860 in SAT exam will be:

z=\frac{860-1026}{209}=-7.59

z-score for junior scoring 16 in ACT exam will be:

z=\frac{16-20.8}{4.8}=-1

The z-score for SAT exam of junior is much small than his ACT score. This means he performed well in his ACT exam and performed poor in his SAT exam.

4 0
3 years ago
Write each expression in simplest form. (√y-√3)(√y+2√3)
Vladimir79 [104]

 We write the expression in its simplest form and we are left with.

y²√3 + y - 6

  Before proceeding let's define an algebraic expression.

<h3>Algebraic expression</h3>

    An algebraic expression is a set of numbers and letters that make up an expression that has a meaning, the letters are variables and the numbers are coefficients or independent terms, algebraic expressions can be part of an equation and model mathematical processes.

     The first thing we will do is to write the expression:

(√y-√3)(√y+2√3)

  Then we perform the multiplication, with the distributive property, which gives as a result

(y + 2√3y - √3y - 6)

y²√3 + y - 6

Learn more about algebraic expression in:

brainly.com/question/21856579

#SPJ4

4 0
1 year ago
A box has dimensions of 19 inches long, 1.7 feet wide, and 6 inches high. What is the volume of the box? The formula for the vol
8_murik_8 [283]

Answer:

Volume = l x w x h

Volume = 19 x 1.7 x 6

= 193.8

5 0
3 years ago
Work out<br> 6.7<br> ×<br> 0.095/<br> 0.605
denpristay [2]

Answer:    1.052

First Divide 0.095 with 0.605 then times 6.7 to that answer

7 0
2 years ago
Read 2 more answers
What is the value of the y-intercept of the graph <img src="https://tex.z-dn.net/?f=f%28x%29%3D-6x7.5%5Ex" id="TexFormula1" titl
Veseljchak [2.6K]

Answer:

y-intercept = (0,0)

Step-by-step explanation:

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

5 0
3 years ago
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