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3 years ago

Solve for W. −(1/4w+8)+8=3

Mathematics

2 answers:

irina1246 [14]3 years ago

7 0

Answer:

1/4 8

Step-by-step explanation:

because it is numbers that we multiply

dmitriy555 [2]3 years ago

6 0

Answer:

W= -12

Step-by-step explanation:

-1/4 w + - 8 +8 = 3 Distribute

-1/4 w =3

4/-1 * -1/4 w = 4/-1 * 3 Multiply

W= -12

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2 years ago

Given vectors u = ⟨2, –3⟩ and v = ⟨1, –1⟩, what is the measure of the angle between the vectors?

oksano4ka [1.4K]

Answer:

The measure of the angle between the vectors = Ф = 11.30°

Step-by-step explanation:

Given

u = ⟨2, –3⟩

v = ⟨1, –1⟩

$\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}$

Next, find the lengths of the vectors:

$\mathrm{Computing\:the\:Euclidean\:Length\:of\:a\:vector}:\quad \left|\left(x_1\:,\:\:\ldots \:,\:\:x_n\right)\right|=\sqrt{\sum _{i=1}^n\left|x_i\right|^2}$

u = ⟨2, –3⟩

$\:\:\left|u\right|\:=\sqrt{2^2+\left(-3\right)^2}$

$=\sqrt{13}$

u = ⟨2, –3⟩

$|v|=\sqrt{1^2+\left(-1\right)^2}$

$=\sqrt{2}$

Finally, the angle is given by:

$\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}$

cos (Ф) = 5/√26

Ф = arc cos (cos (Ф)) = arc cos (5 √26) / (26)

Ф = 11.30°

Thus, the measure of the angle between the vectors = Ф = 11.30°

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