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3 years ago

Let a = (-3,4) and v = (4,-5). If a + b = v. find b.

Mathematics

1 answer:

Gre4nikov [31]3 years ago

3 0

Answer:

b = (7, -9)

Step-by-step explanation:

Let a = (-3,4) and v = (4,-5).

If a + b = v. find b.

performing the addition of the vectors would mean that we add corresponding coordinates.

let b = (x, y)

then a + b = (-3, 4) + (x, y) = (-3 + x, 4+y) = v = (4, -5)

-3 + x = 4

4 + y = -5

x = 7

y = -5 - 4 = -9

so b = (7, -9)

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Factor completely: 4a^2+b^2−c^2+4ab

Lapatulllka [165]

Answer:

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Step-by-step explanation:

Here, the given expression is $4a^{2} + b^{2} - c^{2} + 4ab$

or, the given expression can be written as

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3 years ago

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xxTIMURxx [149]

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Step-by-step explanation:

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3 years ago

A boat travels upstream on the Mississippi river for 3.5 hours. The return trip only takes 2.5 hours because the boat travels 2

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