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Katena32 [7]
3 years ago
5

Why is 2.3 - 20 = 17.7 reasonable

Mathematics
2 answers:
Inga [223]3 years ago
6 0
You have the problem backwards. It is 20 - 2.3= 17.7. This is because 17.7 plus 2.3 equals 20.
Verizon [17]3 years ago
3 0
If 20-2.3=17.7, then if you add 17.7 to 2.3. it equals 20 which is called the communicative property because whatever you add or subtract, the answer is the same
<span>17.7+2.3=2.3+17.7
</span>the correct answer to this is that 2.3 -20=-17.7 the answer is resonable because if you go on a number line then you would see that if you start a 2.3 and subtract 20 spaces you get to ----17.7

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What is the total number of yards lost or gained ​
Arturiano [62]
-3.5x3= -10.5 -10.5+7.4= -3.1 -3.1+1= -2.1

Answer: -2.1 yards
5 0
3 years ago
What is the 6th term in the expression (2x-y)^10
Elis [28]

Hello from MrBillDoesMath!

Answer:

- 8064 x^5 y^5



Discussion:

The binomial theorem gives us the expansion  of  (a + b) ^n  :

(a + b ) ^n

= a^n + na^(n-1)b +  (n(n-1)/ 2!) a^(n-2)b^2 +....


In our case, taking the 6th term above, setting a = 2x, b = -y, and n = 10 gives

( (10*9*8*7*6)/ (5 *4*3*2*1) )  * (2x)^5 (-y)^5r

=  - 8064 x^5 y^5


Thank you,

MrB

4 0
3 years ago
If m&lt; AOC= 180 degrees then &lt; AOC is a straight angle true or false?
IRISSAK [1]

Answer:

No, that would not be a straight angle.

Step-by-step explanation:

180 degrees is a horizontal line, so anything less or more than it would not be a straight angle.

5 0
3 years ago
the sum of the polygon is 1980 degree .what is the sum of the angles of a polygon with one side less? what about a polygon with
pashok25 [27]

Answer:

Sum of angles of a polygon with one side less = (12-2)x180 = 1800

Sum of angles of a polygon with one side more​ = (14-2)x180 = 2160

Step-by-step explanation:

(n-2)x180 = 1980

n = 13

Sum of angles of a polygon with one side less = (12-2)x180 = 1800

Sum of angles of a polygon with one side more​ = (14-2)x180 = 2160

3 0
3 years ago
Plz help I’ll mark brainliest
jeka94

Answer:

<h3>x = 22.62°</h3>

Step-by-step explanation:

To find the measure of angle x we use cosine

\cos( \alpha )  =  \frac{adjacent}{hypotenuse}

From the question

PO is the hypotenuse = 13

The adjacent is 12

Substitute the values into the above formula

That's

\cos(x)  =  \frac{12}{13}

x =  \cos^{ - 1} ( \frac{12}{13} )

x = 22.6198

We have the final answer as

<h3>x = 22.62° to the nearest hundredth</h3>

Hope this helps you

3 0
3 years ago
Read 2 more answers
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