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3 years ago

Justin did push-ups for the past 5 days. The following data points are the number of push-ups he did each day.

Mathematics

2 answers:

ohaa [14]3 years ago

8 0

Answer:

The standard deviation is approximately 2.76 push-ups.

Step-by-step explanation:

irga5000 [103]3 years ago

6 0

Answer:

2.67

Step-by-step explanation:

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Please answer all questions ASAP. Don’t mind the answers, i think i’m not right. TIA

Lelechka [254]

Answer:

1. 1.6

2. 1.5

3.1.3

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3 years ago

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EastWind [94]

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2.352

Step-by-step explanation:

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3 years ago

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Which is the equation of a line that has a slope of -2/3 and passes through point (-3,-1)?

Fantom [35]

Answer:

Step-by-step explanation:

You have to use Point Slope Form:

y - Y1 = m (x - X1)
m is the slope
Y1 & X1 is a point on the line
The form allows you to identify the slope & the point on the line

About Problem:

Since -2/3 is the slope, it represents m in y - Y1 = m (x - X1) form.

-3 represents X1 in y - Y1 = m (x - X1) form

-1 represents Y1 in y - Y1 = m (x - X1) form

y - Y1 = m (x - X1)

y - -1 = -2/3 (x - -3) ---- This is in Point Slope Form

If you want to solve it, & put it in Slope Intercept form, it would look like this:

y = mx + b

y = -2/3 - 2 --- This is in Slope intercept Form.... I might've solved it wrong... I'm not sure...

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3 years ago

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If the side of every square is 2 centimeters, how many centimeters is the circumfence of the figure?

Mandarinka [93]

Answer:

Step-by-step explanation:

$|FE| = |CB| = 4\cdot2=8\,cm\\\\|ED|=|DC|= \sqrt{(3\cdot2)^2+(4\cdot2)^2}= \sqrt{6^2+8^2}=\sqrt{100}=10\,cm\\\\|FA|=|AB|= \sqrt{(6\cdot2)^2+(8\cdot2)^2}= \sqrt{144+256}=\sqrt{400}=20\,cm\\\\\\Circumference = FE+ED+DC+CA+AB+FA\\\\Circumference =8+10+10+8+20+20=76\,cm$

3 0

3 years ago

Two different ways to find the difference for 12-3

Gennadij [26K]

For this case we have:

way 1:
Common factor 3 in the expression:
$12-3 = 3 (4-1)

12-3 = 3 (3)

12-3 = 3 (9)$

Way 2:
Write the number 12 as the sum of 4 times 3:
$12-3 = (3 + 3 + 3 + 3) - 3
$
Then, for associative property:
$12-3 = 3 + 3 + 3 + (3 - 3)

12-3 = 3 + 3 + 3 + (0)

12-3 = 3 + 3 + 3

12-3 = 9$

8 0

3 years ago

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