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3 years ago

Which choice is equivalent to √10*√5? A. 5√2 B. 25√2 C. 5√10 D. 2√5

Mathematics

1 answer:

DanielleElmas [232]3 years ago

3 0

Answer: $5\sqrt{2}$

Step-by-step explanation:

$\sqrt{10} *\sqrt{5} =\sqrt{50} =\sqrt{2*5*5} =5\sqrt{2}$

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T/F every function is a relation

sammy [17]

True
Every function is a relation, but not every relation is a function.

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3 years ago

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Kristen reads 11 pages per hour. In all, how many hours of reading will Kristen have to do

soldier1979 [14.2K]

Answer:

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

-27

———

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3 years ago

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Naddik [55]

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3 years ago

María regala a su padre un best seller por su cumpleaños. Elige la encuadernación de tapas duras que tiene forma de prisma recta

iris [78.8K]

Answer:

<h2>María used only 792 square centimeters to cover the best seller.</h2>

Step-by-step explanation:

The volume of the best seller is about a rectangular prism, which is

$V= w \times l \times h$

Where $w$ is width, $l$ is length and $h$ is height.

In this case, we have

$w=12 \ cm\\l= 18 \ cm\\h= 6 \ cm$

Replacing values in the formula, we have

$V=12cm \times 18cm \times 6cm=1,296cm^{3}$

Now, according to the problem, 10% of paper covers the book, that means we need to find the suface area and then find the 90% of the paper missing. The formula for surface area is

$S=2wl+2lh+2hw$

Replacing values, we have

$S=2(12)(18)+2(18)(6)+2(6)(12)=432+216+144=792cm^{2}$

If 792 square centimeters is 10% of the total paper, then

$x=100\%\frac{792cm^{2} }{10\%} =7,920cm^{2}$

Therefore, there is 7,920 square centimeters of papers, but María used only 792 square centimeters to cover the best seller.

4 0

3 years ago