3 years ago

5. The value of y varies directly with x, and

Mathematics

1 answer:

Kruka [31]3 years ago

8 0

Answer: y= 3x

Step-by-step explanation:

1. The question lack info

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In order to estimate the average time spent on the computer terminals per student at a local university, data were collected fro

Ksju [112]

Answer:

d. 0.133

Step-by-step explanation:

-Standard error is calculated using the formula:

$E=\frac{\sigma}{\sqrt{n}}\\\\\sigma-=standard \ deviation\\n=sample \ size$

#We substitute the given values in the formula to solve for E:

$E=\frac{\sigma}{\sqrt{n}}\\\\=\frac{1.2}{\sqrt{81}}\\\\=0.133$

Hence, the standard error is 0.133 and the correct option is d

7 0

3 years ago

The domain of y=ax^2 is all real numbers. Describe the range when (a) a>0 and (b) a<0.

eduard

The range is all positive values...

R{y | y>0}

Range > "Y" such that y is greater than 0

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3 years ago

If x=-7 and y=4 what would x^2-3xy=

Kruka [31]

Answer:

While x = -7 and y = 4, x² - 3xy = 133.

Step-by-step explanation:

x² - 3xy

Substitute variables.

(-7)² - 3(-7)(4)

Square -7 remembering that (-x)² = x².

49 - 3(-7)(4)

Multiply -7 and 4.

49 - 3(-28)

Multiply -3 and -28.

49 + 84

Add 49 and 84.

133

3 0

2 years ago

it takes akios family 2 and 1/2 hours to drive from there home to the beach. it takes his family three times as long to drive to

dexar [7]

2.5 hours x 3= 7.5 hours

7 and 1/2 hours

6 0

3 years ago

A cake recipe uses 3 eggs to make 12 servings. How many eggs will be required to make 348 servings.

gulaghasi [49]

Answer:

116

Step-by-step explanation:

348 divided by 3 equals 116

7 0

2 years ago

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