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Ann [662]
3 years ago
6

Can you help me please?

Mathematics
1 answer:
Kamila [148]3 years ago
7 0

Answer: The set of all possible input values

Step-by-step explanation:

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A number is decreased by 3 and then the result is doubled. if the new result is 6 more than half the original number, what is th
Blizzard [7]
The answer is:  " 8 " .
________________________________
Explanation: 
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Let "x" represent the "original number".

2(x - 3) = 6 + (1/2)x ;  Solve for "x" ;
______________________________________
Multiple the ENTIRE EQUATION (both sides) by "2" ; to get rid of the fraction:

2*{2(x - 3) = 6 + (1/2)x} ; 

to get:

4(x - 3) = 12 + x ; 
___________________________
  Let us expand the "left-hand side" of the equation:
_____________________________________________
Note the "distributive property of multiplication" :
_____________________________________________
        a(b - c) = ab -  ac ; 
        
        a(b +c) = ab + ac ;
______________________________________________
So;  "4(x - 3)" = 4*x - 4*3 = 4x - 12 ; 
______________________________________________
Rewrite the equation:
_______________________________________________
  4x - 12 = 12 + x ;

Subtract "x" from EACH side of the equation; and Add "12" to EACH SIDE OF THE EQUATION; 
______________________________________________
  4x - 12 - x + 12 = 12 + x - x + 12 ;

to get:
______________________________________________
     3x = 24 ; 
_____________________________________________
Now, divide EACH side of the equation by "3" ; to isolate "x" on one side of the equation; and to solve for "x" ;
_____________________________________________
    3x/3 = 24/3 ; 
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      x = 8 .
_____________________________________________
6 0
4 years ago
There are 9 squares and 15 circles what is the simplest ratio of squares to circles
Natali5045456 [20]

Answer:

Step-by-step explanation:

Hj jdhaiwn

6 0
3 years ago
PLSSS HELP IF YOU TURLY KNOW THISS
saul85 [17]

Answer:

27000

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write a direct variation equation that relates 16 and 2
skad [1K]

Upvote

•

1

Downvote

Add commeAnswer:

y = -4x

When x = 4, y = -16

When y = 20, x = -5

Step-by-step explanation:

First off, definitions: Direct variations refers to two variables being related with neither being the denominator of a fraction. (nothing along the lines of y = 1/x)

So, given that, I simply found what the ratio was between the two values. Something like buying gas at the gas station. The ratio between the gas you get and the money you pay is the price per gallon of gas. In this case, the proportion is -4 (-16 divided by 4).

Thus we have a relationship. For each y, you have negative four x's. Thus, y = -4x.

Finding the value of x when y = 20 simply requires plugging values in. Remember, a fundamental principle in all of Algebra is substitution. If two things are equal, they are interchangeable. So, if you saw "3 + 4" in a mathematical expression, you could simply erase it and write 7, so long as no other mathematical rules (multiplication before addition, for instance) interferes.

Thus, if y = 20, we can take our original equation and replace y with 20.

y = -4x       =>     20 = -4x

Then, simply solve for x, keeping in mind that when two items in math are written against each other, it means multiplication. Thus, we reverse the multiplication to division and divide both sides of the equation by -4.

20 / -4 = -5

5 0
3 years ago
Read 2 more answers
Need to know the process 3(y+3)+5y=4(2y+1)+5
Zigmanuir [339]

3(y + 3) + 5y = 4(2y + 1) + 5

...multiply

3y + 9 + 5y = 8y + 4 + 5

...simplify

8y + 9 = 8y + 9

...the equation is true, so the answer is infinitely many solutions


8 0
3 years ago
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