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2 years ago

What is an open sentence in math? And how is it different from true or false?

1 answer:

5 0

An open sentence in math means that it uses variables, meaning that it is not known whether or not the mathematical sentence is true or false.

A closed sentence, on the other hand, is a mathematical sentence that is known to be either true or false

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Find the perimeter of the polygon shown in the figure.

Dafna11 [192]

Answer:

Step-by-step explanation:

It is the addition of all the sides

7 0

3 years ago

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Which expression represents the fourth term in the binomial expansion of (e + 2f)10?

yan [13]

The fourth term of the binomial expansion $(e+2f)^{10}$ can be calculated using the formula for (i+1)-th term of the binomial expansion:

$T_{i+1}=C_{10}^i\cdot e^{10-i}\cdot (2f)^i.$

In order to find term $T_4$ , determine that

$i+1=4\Rightarrow i=3.$

Now

$T_4=C_{10}^3\cdot e^{10-3}\cdot (2f)^3=C_{10}^3\cdot e^7\cdot (2f)^3.$

Answer: correct choice is A

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3 years ago

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How do you write 9 7/9 as a decimal?

Sav [38]

Answer:

9.777777778

Step-by-step explanation:

7/9 written as a decimal is 0.777777778 when we add this on to the whole number 9, we get 9.777777778.

hope this helps!

3 0

2 years ago

What is expanded form 12.38

Kruka [31]

Twelve and thirty- eight hundredths.

5 0

3 years ago

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Evaluate 0.3y + y/x when y = 10 and z =5

coldgirl [10]

Answer:

Step-by-step explanation:

0.3*10=3

10/5=2

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

3+2=5

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3 years ago