I have one more question and I am stuck on it.

Mathematics

2 answers:

Sladkaya [172]2 years ago

4 0

this should be your answers for y and x

y=2 and x=7

adelina 88 [10]2 years ago

3 0

Y=2 by the method of substitution (x is 7).

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Given vectors A (2,-1,5), B (4,3,-2) & C (5,4,0), find:?

MrRissso [65]

A) 4a - 3b + 2c

4(2, -1, 5) - 3(4, 3 , -2) + 2(5, 4, 0) = (8, -4, 20) - (12, 9, - 6) + (10, 8, 0) =

= (8 - 12 + 10 , -4 - 9 + 8 , 20 + 6 + 0) = (6, - 5, 26)

Answer: (6, - 5, 26)

b) magnitude of vector b

$\sqrt{4^2+3^2+(-2)^2} = \sqrt{16+9+4} = \sqrt{29} ~ 5.4$

c) vector of length 7 parallel to vector c

=> m(5,4,0) = (5m,4m,0)

=> $\sqrt{(5m)^2+(4m)^2+0}= \sqrt{25m^2+16m^2}= \sqrt{41m^2}=m \sqrt{41}=7$

=> m = 7 / √41 ≈ 1.093

=> 1.093 (5, 4, 0) = (5.465 , 4.372, 0)

Answer: (5.465 , 4.372 , 0)

7 0

2 years ago

Which expression is equivalent to 10 of the power of 5 ? 10·5 510 5·5·5·5·5·5·5·5·5·5 10·10·10·10·10

stira [4]

Answer is
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8 0

2 years ago

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The population of a small town can be modeled by the equation where t is the number of years since the collection of the populat

liberstina [14]

The true statements is the population was 4800 when the collection of data began. (3rd option)

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Where:

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The exponential equation used to represent an exponential growth usually have this form:

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