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liberstina [14]
4 years ago
8

Can someone help me please

Mathematics
2 answers:
koban [17]4 years ago
7 0

Answer:

both methods are correct

Step-by-step explanation:

Given

7(x + 4) = 49 ( divide both sides by 7 )

x + 4 = 7 ( subtract 4 from both sides )

x = 3

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

Given

7(x + 4) = 49 ← distribute parenthesis by 7

7x + 28 = 49 ( subtract 28 from both sides )

7x = 21 ( divide both sides by 7 )

x = 3

As shown both methods are equally valid

Vadim26 [7]4 years ago
3 0

Answer:

the second friend

Step-by-step explanation:

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A test has 20 questions. How many do you need to answer correctly in order to get 4/5 of them right?
vova2212 [387]
The answer is:  " 16 " .
____________________________
Explanation:
____________________________
Method 1)
____________________________
(4/5) *(20/1) = ?  

The "5" cancels to a "1" ; and the "20" cancels to a "4" ;  
   (since "20÷5=4" ; and "5÷5=1") ;
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Rewrite as:  (4/1) * (4/1) = 4 * 4 = 16.
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Method 2)
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4/5 * 20/1  = (4*20)/(5*1) = (80/5) = 16 .
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Method 3)
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4/5 * 20 = ?  ;

4/5 = 8/10 = 0.8 ;

0.8 * 20 = 16.0 = 16.
_________________________________ 

8 0
3 years ago
Helppppppppppp.......
yKpoI14uk [10]

Answer:z408 miles

Step-by-step explanation:in/ miles .25/6= 17/X. Cross multiply .25x= 6 times 17

.25X= 102 then divide by .25 X= 408

5 0
4 years ago
What is 10.89249 rounded to the nearest hundredth
nadya68 [22]

Answer:

10.89

Step-by-step explanation:

The hundredth place is the second decimal value. Remember that 4 and below round down and 5 and above, round up.

10.89249 -> 10.89

Best of Luck!

4 0
3 years ago
I need help with this?
Sergio039 [100]
A=0
With step by step you can find the awnser out
7 0
3 years ago
What is the definition of absolute value
Rzqust [24]
It's the value a number is away from zero.
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