3 years ago

Which expression is the best estimate for 11 8/2+2 3/8

Mathematics

1 answer:

yanalaym [24]3 years ago

6 0

11 8/2 + 2 3/8 = 30/2 + 19/8 = 15 + 2,375 = 17,375

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Goshia [24]

Answer:

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2 years ago

for v= 4i - 5j, find unit vector u in the direction of v, and write your answer as a linear combination of the standard unit vec

umka21 [38]

Answer:

a. $u=\frac{4\sqrt{41}i }{41}-\frac{5\sqrt{41}j}{41}$

Step-by-step explanation:

The given vector is v= 4i - 5j

The magnitude of this vector is;

$|v|=\sqrt{(-4)^2+(-5)^2}$

$|v|=\sqrt{16+25}$

$|v|=\sqrt{41}$

The unit vector u in the direction of v is;

$u=\frac{v}{|v|}$

$u=\frac{4i - 5j}{\sqrt{41}}$

$u=\frac{4i }{\sqrt{41}}-\frac{5j}{\sqrt{41}}$

We rationalize to get

$u=\frac{4\sqrt{41}i }{41}-\frac{5\sqrt{41}j}{41}$

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3 years ago

Read 2 more answers

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s344n2d4d5 [400]

This should be the correct answer

8 0

3 years ago

5a+5b=25 and -5a+5b=35

Alex_Xolod [135]

add the two equations together

5a+5b=25

-5a+5b=35

------------------

0 + 10b =60

divide by 10

b=6

5a + 5b = 25

5a +5(6) = 25

5a +30 =25

subtract 30 from each side

5a =-5

divide by 5

a = -1

Answer (-1,6)

or a=-1 b=6

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3 years ago

A bowling alley charges $8 for shoes and $3 per game Claire brought $20 what inequality describes this

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Answer:

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Step-by-step explanation:

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3 years ago