2 years ago

40 POINTS!!

Mathematics

1 answer:

Elena-2011 [213]2 years ago

5 0

I only know what in the picture which is the letter A

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A baby gains 11 pounds in its first year of life. The baby gained 4 1/4 pounds during the first four months and 3 1/2 pounds in

Ede4ka [16]

Answer:

3.25 pounds

Step-by-step explanation:

x + 4 (1/2) + 3 (1/2) = 11

x + 4.25 + 3.5 = 11

x + 7.75 = 11

x = 11 - 7.75

x = 3.25 pounds

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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

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The radius of a circle is 9 inches. What is the circle's area? Use 3.14 for .

Anna007 [38]

Answer:

254.34 in²

Step-by-step explanation:

Area of a circle

A = πr²

r = radius of the circle

Solving

A = 3.14 x (9)²
A = 3.14 x 81
A = 254.34 in²

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1 year ago

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What is the following product? 3 root 5 times root 2

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3 years ago

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Ben was framing a small herb garden for his mother. He

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1350 just multiply 30x45 and that the sender

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