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fredd [130]
3 years ago
6

Round 827.3 to 3 significant figures

Mathematics
1 answer:
madreJ [45]3 years ago
6 0

Answer:

To round to three significant figures, look at the fourth significant figure. It's a 5 , so round up.

To round to four significant figures, look at the fifth significant figure. It's a 1 , so round down.

To round to two significant figures, look at the third significant figure. It's an 8 , so round up.

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Jason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles a
masha68 [24]
Diameter of the bigger semi-circle is 15 m
circumference of the bigger semi-circle = πd = 15π

diameter of the smaller semi-circle = 15 - 2(1.25) = 15 - 2.5 = 12.5 m
circumference of the smaller semi-circle = πd = 12.5π m

Total length of the segments between the two circles = 11(1.25) = 13.75 m

Total length of wrought iron used = 15π + 12.5π + 13.75 = 100 m
7 0
3 years ago
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Round 99.59 to the nearest whole number
yarga [219]
The answer would be 100 

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3 years ago
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4) Dan Ariely and colleagues have conducted some extremely interesting studies on cheating (see, for example Mazar, Amir, &
lianna [129]

I've attached the complete question.

Answer:

Only participant 1 is not cheating while the rest are cheating.

Because only participant 1 has a z-score that falls within the 95% confidence interval.

Step-by-step explanation:

We are given;

Mean; μ = 3.3

Standard deviation; s = 1

Participant 1: X = 4

Participant 2: X = 6

Participant 3: X = 7

Participant 4: X = 0

Z - score for participant 1:

z = (x - μ)/s

z = (4 - 3.3)/1

z = 0.7

Z-score for participant 2;

z = (6 - 3.3)/1

z = 2.7

Z-score for participant 3;

z = (7 - 3.3)/1

z = 3.7

Z-score for participant 4;

z = (0 - 3.3)/1

z = -3.3

Now from tables, the z-score value for confidence interval of 95% is between -1.96 and 1.96

Now, from all the participants z-score only participant 1 has a z-score that falls within the 95% confidence interval.

Thus, only participant 1 is not cheating while the rest are cheating.

8 0
3 years ago
. Which algebraic expression is equivalent to the expression below?
I am Lyosha [343]
Since you are not distributing at all, you can ignore the parenthesis :)

When ignoring the parenthesis your equation is
18x + 11 - 4x

Then just combine like terms :)

14x + 11

Your answer is C.

Hope this helped!


5 0
3 years ago
50+ POINTS I NEED HELP
pashok25 [27]

Answer:

21 yards

Step-by-step explanation:

3 0
3 years ago
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