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3 years ago

Help please on quiz !!

Mathematics

1 answer:

vesna_86 [32]3 years ago

5 0

Answer: 3.15

Step-by-step explanation:

21 / 15%

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Find the circumference of the circle. Use 3.14 or for . Round to the nearest tenth if necessary. a helicopter pad with a diamete

miskamm [114]

Answer:

Step-by-step explanation:

47.1

you do 3.14 times 15.

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3 years ago

Read 2 more answers

Is algebra.

gulaghasi [49]

Answer:

2(x - 9.46)(x + 2.54)

Step-by-step explanation:

2(x² - 12x + 24)

since there are no factors that multiply to 24 and add to -12 then i used the quadratic formula to get:

6+2 $\sqrt{3}$ , 6-2 $\sqrt{3}$

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3 years ago

Solve for y. enter your answer in the box. y= __

mihalych1998 [28]

Answer:

y = 10 PLEASE GIVE BRAINLIEST

Step-by-step explanation:

The angles of this triangle should all add up to 180 degrees.

There are 3 angles so 180 ÷ 3 = 60. Each angle will = 60 degrees.

To find y:

5y + 10 = 60

5y = 60 - 10

5y = 50

y = 50 ÷ 5

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4 years ago

A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below:69.40

e-lub [12.9K]

Answer:

The line's most probable length is 69.4012 meters.

The standard deviation is 0.0032 meters.

Step-by-step explanation:

We are given the following in the question:

69.401, 69.400, 69.402, 69.396, 69.406, 69.401, 69.396, 69.401, 69.405, 69.404

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{694.012}{10} = 69.4012$

The line's most probable length is 69.4012 meters.

Sum of squares of differences = 0.0001016

$\sigma = \sqrt{\dfrac{0.0001016}{10}} = 0.0032$

The standard deviation is 0.0032 meters.

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3 years ago

Slope = -11 and through the point (5,7)

valkas [14]

Answer:

y-7=-11(x-5)

Step-by-step explanation:

y-Y^1=mx-X^1

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3 years ago