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iogann1982 [59]
3 years ago
12

Find the standard deviation for each group of data items. Round answers to two decimal places. 7,9,9,15​

Mathematics
1 answer:
KonstantinChe [14]3 years ago
6 0

Answer:

3

Step-by-step explanation:

the calculator I used

http://www.alcula.com/calculators/statistics/standard-deviation/

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The product of two consecutive positive integers is 56. Find the two integers
vredina [299]

Answer:

Two consecutive integers are of the form

x and x + 1

Their product is equal to 56

x(x + 1) = 56

Solve and find the two numbers x and x + 1. The above equation may be written as follows

x2 + x - 56 = 0

Factor and solve

(x - 7)(x + 8) = 0

solutions: x = 7 , x = -8

x= - 8 is not valid since the number sought must be positive. Hence

x = 7 and x + 1 = 8 are the two consecutive numbers.

Step-by-step explanation:

7 0
3 years ago
Use the table to work out the values of a , b , c , and d .​
slavikrds [6]

Answer:

a = 10, b = 6, c = 2, d = 0

Step-by-step explanation:

Substitute the appropriate values of x into the equation and evaluate

x = - 3 : y = 4 - 2(- 3) = 4 + 6 = 10 → a

x = - 1 : y = 4 - 2(- 1) = 4 + 2 = 6 → b

x = 1 : y = 4 - 2(1) = 4 - 2 = 2 → c

x = 2 : y = 4 - 2(2) = 4 - 4 = 0 → d

5 0
3 years ago
Read 2 more answers
Please help me with this one and explain to me how you found the answer
Aneli [31]

Answer:

i believe its a square :)

Step-by-step explanation:

5 0
3 years ago
8. Jonathan deposits $6,000 in a savings account that pays 3.2% interest compounded
Salsk061 [2.6K]

Answer:

About $6805.66 as I rounded it up

6 0
3 years ago
A trapezoid has bases with lengths of 1.5 yards and 4 yards. The height is 12 yards. What is the area of the trapezoid?
Georgia [21]
Answer: 33 square yards

Explanation: To solve this, we must first add both bases together, 1.5 and 4.

1.5 + 4 = 5.5

Next, we must multiply 5.5 and 12

12 x 5.5 = 66

The last step is to divide our product by 2, similar what we do to triangles.

66/2 = 33
—————————————————————

Hope this helps!!
4 0
2 years ago
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