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3 years ago

Determine the magnitude of the sum of the two vectors: 2.5i+1.8j; -6i-0.7j

Mathematics

2 answers:

trapecia [35]3 years ago

7 0

Answer:

Answer for this question would be: A, 3.67

labwork [276]3 years ago

5 0

Answer:

A. 3.67

Step-by-step explanation:

1. Add the two vectors (2.5,1.8)+(-6,-.7)=(-3.5,1.1)

2. Find the magnitude using square root of a^2+b^2

sqrt(-3.5)^2+(1.1^2)=sqrt(12.25+1.21)=sqrt(13)=3.67

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Find an expression which represents the sum of (7x - 8y) and (-6x - 6y) in simplest terms.

grigory [225]

Answer:

$\displaystyle (7x - 8y) + (-6x - 6y) = x - 14y$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

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Exponents
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Division
Addition
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Left to Right

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Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle (7x - 8y) + (-6x - 6y)$

Step 2: Simplify

Combine like terms (x): $\displaystyle (7x - 8y) + (-6x - 6y) = x - 8y - 6y$
Combine like terms (y): $\displaystyle (7x - 8y) + (-6x - 6y) = x - 14y$

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3 years ago

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Vitek1552 [10]

Answer:

1. $33.00

2. $48.00

3. $3.00

4. $36.40

Step-by-step explanation:

44.00 - 25% = 33 —> $33.00

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52.00 - 30% = 36.4 —> $36.40

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3 years ago

last year Rafael opened an investment was count with $5,500 at the end of the year the amount in the account has been decreased

Vlad1618 [11]

Answer: The new amount is 0.78*5500. Which is 4290. The decrease is 5500-4290=1210.

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3 years ago

The center of a circle is at the origin. An endpoint of a diameter of the circle is at (-3, -4). How long is the diameter of the

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Distance from origin x 2

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3 years ago

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Tanzania [10]

1.89×4=7.56 7×2.49= 17.43
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so d is your answer

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3 years ago

Read 2 more answers