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Svetlanka [38]
3 years ago
14

Round to the nearest whole number: 123.45

Mathematics
2 answers:
koban [17]3 years ago
8 0

Answer:

123

Step-by-step explanation:

because if its lower than 50 you round down, if its 50 or above you round up

ryzh [129]3 years ago
4 0

Answer:  

If you like to round 123.45 to the nearest tenth, leaving only one number after the decimal point, then you have come to the right post. Number:.

Step-by-step explanation:

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Assuming a speed limit is 105 km/hr, what is this in miles per hour?
Firdavs [7]

Answer:

65.2

Step-by-step explanation:

Every km is 0.62 miles and then you multiply that by 105. 105 x 0.62 =65.2

5 0
2 years ago
Can some one please help me
Alja [10]
-\sqrt{29}-irrational\\\\-\sqrt{25}=-5-rational\\\\44.\overline{91}=44.\frac{91}{99}-rational\\\\-\frac{6}{19}-rational\\\\-6\pi-irrational

6 0
3 years ago
Read 2 more answers
Subtract these polynomials.
marta [7]
The correct answer is:   [A]:  " 4x³ + x² − 11x + 15 " .

_______________________________________________________
<u>Note</u>:
_______________________________________________________

(6x³ − 4x + 5) − (2x³ − x² + 7x − 10) ;

=  (6x³ − 4x + 5) − 1(2x³ − x² + 7x − 10) ;
_________________________________________

Examine the following portion of the expression:
_________________________________________
    " − 1(2x³ − x² + 7x − 10) " ; 

=  (-1 * 2x³)  − (-1 * x²) + (-1 * 7x) − (-1 * 10) ; 

=  (-2x³) − (-1x²) + (-7x) − (-10) ; 

= (-2x³)  + 1x² − 7x + 10 ; 

=   " − 2x³ + 1x² − 7x + 10 " ;

Now, bring down the other part:

 6x³  − 4x  +  5 − 2x³ + 1x² − 7x + 10 ;

Combine the "like terms" :

6x³  − 2x³ =  + 4x³ ;

− 4x − 7x =  − 11x ; 

+ 5 + 10 = + 15 ; 

and bring down the:  

+ 1x² ( which equals:  " x² ") ; 
____________________________________________________
And rewrite:
____________________________________________________
   →  " 4x³ + x² − 11x + 15 " ; 

   →  which is:  Answer choice:  [A]:  " 4x³ + x² − 11x + 15 " .
____________________________________________________
5 0
3 years ago
If a varies directly as b and a=3 when b=12, what is the value of a when b=18?
Zepler [3.9K]

Answer:

a is proportional to b

a=kb

k is proportionality constant

k =a/b =3/12 =1/4

k=1/4 = a/b=a/18

1/4=a/18

a=18/4 =9/2 =4.5 answer

4 0
3 years ago
2. Find the surface area of the cone in terms of pi.
wel

Answer:

I think the answer is C. 53pi ft

Step-by-step explanation:

7 0
3 years ago
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