Doug's teacher told him that the standardized score (z-score) for his mathematics

Mathematics

1 answer:

BigorU [14]2 years ago

8 0

Answer:

Doug’s test score is 1.20 standard deviations above the average test score of the students in the course.

I just took the test and got it right :)

Step-by-step explanation:

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If n is a positive integer and the product all the integeres from 1 to n inclusive is a multiple of 990 what is the least possib

kolbaska11 [484]

Hello,

Since 990=2*3²*5*11 ==>n=11

6 0

3 years ago

Alright, here's one for Algebra:

Wewaii [24]

Let x= number rows
Then x + 5 = number of seats per row

x(x+5) = 126
X^2 + 5x = 126
x^2 + 5x -126 = 0; now factor or use quadratic:
(x+14)(x-9) = 0; so the answers are either -14, or 9, and since -14 is not possible in this case because you can't have a negative number of rows, the answer is 9 rows.

Check work: number of rows = 9, number of seats per row = 9+ 5= 14, and 9 x 14 = 126

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2 years ago

A function is shown below

Scrat [10]

Answer:

Step-by-step explanation:

<u>Put input value instead of the x into equation and calculate the output:</u>

y = -5x - 7

<u>x = -4, then find the value of y:</u>

y = -5(-4) - 7 = 20 - 7 = 13

The output is 13 when the input is -4

6 0

2 years ago

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The temperature went from -12°F to 18°F. Which of the following expressions could be used to find how much the temperature chang

kenny6666 [7]

Answer:

Step-by-step explanation:

D represents absolute value, and this is what you use to find the answer to this equation.

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2 years ago

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in these triangles, side AB is congruent to side DF, and side BC is congruent to side FG. Determine the values of x and y

vlada-n [284]

I added a screenshot with the complete question

Answer:
x = 3
y = 9

Explanation:
1- getting the value of x:
We are given that:
side AB is congruent to side DF. This means that:
AB = DF
3(2x+10) = 12x + 12
6x + 30 = 12x + 12
12x - 6x = 30 - 12
6x = 18
x = 18/6
x = 3

2- getting the value of y:
We are given that:
side BC is congruent to side FG. This means that:
BC = FG
2y + 12 = 2(2y-3)
2y + 12 = 4y - 6
4y - 2y = 12 + 6
2y = 18
y = 18/2
y = 9

Hope this helps :)

5 0

3 years ago