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3 years ago

That my answer that I chose but I don't know if it's right

Mathematics

2 answers:

sveta [45]3 years ago

8 0

Yes your correct! hope this helped :))

bogdanovich [222]3 years ago

5 0

Answer:

I also think it's 21

Step-by-step explanation:

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11. Determine the type and number of solutions of x2 - 8x + 16 = 0.

noname [10]

Answer:

one real solution

Step-by-step explanation:

the equation simplified is (x+4)²

4 0

3 years ago

Christina uses a ruler to measure the length of the math book she says that the book is 4/10 m long is her measurement in simple

lidiya [134]

Answer:

2/5 m or 4 dm

Step-by-step explanation:

The fraction 4/10 can be reduced by removing a factor of 2 from numerator and denominator. The length could be expressed as 2/5 m.

The metric system has unit prefixes that make it easy to choose appropriate units for almost any measurement. Apparently Christina wants to use 1/10 m as her unit of measurement. That length is also called a "decimeter." So, Christina's measurement could be expressed in very simple form as 4 dm.

_____

A decimeter is not a particularly common unit in everyday use, though it is reasonably useful for many purposes.* More conventionally, lengths in that range are expressed in centimeters, so Christina's measurement could also be described as 40 cm.

____

* I like units of decimeters for volume calculations, because a cubic decimeter is 1 liter.

3 0

3 years ago

-2/3 divided by2 1/4

ValentinkaMS [17]

Answer:

It's -8/27

hope this helped

7 0

3 years ago

Read 2 more answers

Which choice is equivalent to the expression below? 6 + 18+3 square root 3- 3 square root 2

Temka [501]

Answer: D: $3\sqrt{3} +\sqrt{6}$

Step-by-step explanation:

$\sqrt{6}+\sqrt{18} +3\sqrt{3}-3\sqrt{2} = \sqrt{6}+3\sqrt{3} \\( 7.64 in alternative form )$

$3\sqrt{3} +\sqrt{6} = 7.64$

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4 0

3 years ago

An engineer is designing a roller coaster. The tallest peak is 310 feet high.

rusak2 [61]

<h2>Hello!</h2>

The answer is:

The slope of the hill is equal to 2.

To solve the problem, we need to remember that the slope of a line, is the rate of increase or decrease of the line.

From the statement we know that the tallest peak of the roller coaster is 310 feet (y), while the roller coaster travels 155 horizontal feet (x), so, calculating we have:

$Slope=\frac{height}{base}=\frac{y}{x}$

Then, substituting the given information and calculating, we have:

$Slope=\frac{310ft}{155ft}=2$

We have that the slope of the hill is equal to 2.

Have a nice day!

4 0

3 years ago