3 years ago

Jackie followed these steps to evalute the expression

Mathematics

1 answer:

sweet [91]3 years ago

6 0

??? what steps are you talking about. lol

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A certain scale has an uncertainty of 4 g and a bias of 2 g. A single measurement is made on this scale. What are the bias and u

Fed [463]

Answer: 0.8

Step-by-step explanation:

given data:

uncertainity = 4g

bias = 2g

solution:

σX =0.2 and σY = 0.4

σcX

= 3σX

= 4(0.2)

= 0.8

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3 years ago

Why is 8.8 classified as a rational number

BlackZzzverrR [31]

Answer:

8.8 is classified as a rational number because it can be written as a fraction, which would be 44/5.

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What is the answer to this expression <br><br> 9-(3-6x)

Fudgin [204]

Simplified would be 6+6x

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2 years ago

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At 7pm last night, the temperature was 10 F. At 7am the next morning, the temperature was -2F

SOVA2 [1]

A. It changed by 12 degrees F

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3 years ago

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Given:

Anuta_ua [19.1K]

Answer:

84 square units.

Step-by-step explanation:

If LM - KN = 4, then denote KN = x and LM = x+4.

1. Consider right triangle KLM. By the Pythagorean theorem,

$KL^2 =ML^2+MK^2,\\ \\15^2=(x+4)^2+MK^2.$

2. Consider right triangle KMN. By the Pythagorean theorem,

$MN^2 =NK^2+MK^2,\\ \\13^2=x^2+MK^2.$

Subtract these two equations:

$15^2-13^2=(x+4)^2-x^2,\\ \\225-169=x^2+8x+16-x^2,\\ \\56=8x+16,\\ \\8x=56-16,\\ \\8x=40,\\ \\x=5\ un.$

Then

$13^2=5^2+MK^2,\\ \\MK^2=169-25,\\ \\MK^2=144,\\ \\MK=12\ un.$

The area of KLMN is

$A_{KLMN}=\dfrac{LM+KN}{2}\cdot MK=\dfrac{5+9}{2}\cdot 12=14\cdot 6=84\ un^2.$

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3 years ago