2 years ago

Statiscal or non statistical????

Mathematics

1 answer:

Svetach [21]2 years ago

6 0

Answer:I am pretty sure this question is statistical. :)

Step-by-step explanation:

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Y varies directly with x, and y = 120 ib when x = 50 ib. Find y if x = 40 ib

Llana [10]

Y = kx is the direct variation equation.
Use the x and y given to find k. After finding k use it to write a new equation.
120=k*50
Divide by 50 on both sides
120/50=k 12/5=k
y = (12/5)(40) y=96

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3 years ago

Olivia scored 82 points on her first math test of the year.On the second math test she scored 78 points. What is the percent of

nadya68 [22]

There is 4.88% decrease in Olivia's score.

Step-by-step explanation:

Given,

Score on first math test = Old value = 82 points

Score on second math test = New value = 78 points

Change = New value - Old value

Change = 78 - 82 = -4

The negative sign indicates the decrease.

Decrease percent = $\frac{Change}{Old\ value}*100$

Decrease percent = $\frac{4}{82}*100=\frac{400}{82}$

Decrease percent = 4.88%

There is 4.88% decrease in Olivia's score.

Keywords: percentage, difference

Learn more about percentage at:

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3 years ago

Compounding comparing accounts

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Answer:

Step-by-step explanation:

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3 years ago

Anna is going to play guitar in her school's annual concert. If she starts by practicing for one hour per day and increases the

Drupady [299]

On day one she starts of with 1 hour so it will be 1+30x. X being the number of days so by the seventh day Anna would practice for 240 minutes.

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3/4 x 8/1 in the simplestform

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Answer:

Step-by-step explanation:

$\frac{3}{4}*\frac{8}{1} = \frac{24}{4} = \frac{6}{1} = 6$

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