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Margaret [11]
4 years ago
6

2x²(3x - 5y) - 5x² (2x – 7y)​

Mathematics
1 answer:
damaskus [11]4 years ago
8 0

Answer:

−4x^3+25x^2y

Step-by-step explanation:

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Find the velocity v(t)v(t) and speed ∥v(t)∥∥v(t)∥ of a particle whose motion is described by x=6t3−9t2,y=3,z=2t2−4t+2
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Let \mathbf p(t)=(x(t),y(t),z(t)) denote the particle's position. Then its velocity is given by

\mathbf v(t)=\dfrac{\mathrm d\mathbf p}{\mathrm dt}=(x'(t),y'(t),z'(t))
\mathbf v(t)=(18t^2-18t,0,4t-4)

The speed is then given by the absolute value/magnitude/norm of the velocity function,

\|\mathbf v(t)\|=\sqrt{(18t^2-18t)^2+(4t-4)^2}
7 0
3 years ago
Angles that measure 135 degrees and 45 degrees are complementary,<br> True or false?
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FAlse

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Step-by-step explanation:

6 0
4 years ago
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3. A theater has 60 seats in the first row, 68 seats in the second row. 76 seats in the
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Answer:

Step-by-step explanation:

arithmetic sequence: 60,68,76,......

a = 60

d = 68 - 60 = 8

an = a + (n-1)*d

a20 = 60 + 19 * 8

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3 years ago
2560 divided by 11 equals what
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232.727

Step-by-step explanation:

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A husband and wife have normal vision, although both of the couple's fathers are red–green color-blind, an inherited X-linked re
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Answer:

1/2

Step-by-step explanation:

Since the recessive gene is carried in the x chromosome and a father can only pass it to a daughter, the father doesn't have the disease nor carries it.

The mother carries the recessive gene because her father passed her his conditioned gene (only having one x chromosome), while her mother gave her a normal one so she can have normal vision.  

The chance of having a boy or a girl is 1/2 and the chance of this baby of having both recessive gene is null because in order to have a girl that is color blind both her x chromosomes must have the recessive gene, but the father can't pass it since he doesn't carries it. Therefore the combined probability is 1/2*(1-0) = 1/2.

7 0
3 years ago
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