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Svetradugi [14.3K]
3 years ago
11

An airplane is flying at 455 miles per hour. What is its speed in kilometers per minute?

Mathematics
2 answers:
MArishka [77]3 years ago
6 0

Answer:

Step-by-step explanation:

vitfil [10]3 years ago
3 0
Step—by—step explanation:
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Which expression is equivalent to 8/9 ÷3/4
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The answer is 8/9 • 4/3
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6. Roughly what percent of the US<br> flag is red?
Montano1993 [528]

Answer:

about 14 percent but the exact is 14 3

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3 years ago
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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°

6 0
3 years ago
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Is the following rational number or irrational number?<br>Please see attachment..
stich3 [128]

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I do not know the answer of this question

5 0
3 years ago
Easy question please help
omeli [17]

Answer:

y = 3x - 2

Step-by-step explanation:

Required

The equation of the above linear function

From the table, we have:

(x_1,y_1) = (1,1)

(x_2,y_2) = (2,4)

Calculate slope (m)

m = \frac{y_2 -y_1}{x_2 -x_1}

m = \frac{4 -1}{2 -1}

m = \frac{3}{1}

m =3

The equation is:

y = m(x - x_1) + y_1

So, we have:

y = 3(x - 1) + 1

y = 3x - 3 + 1

y = 3x - 2

3 0
3 years ago
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