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denis-greek [22]
3 years ago
15

To find the value of an algebraic expression by substituting a number for each variable

Mathematics
1 answer:
Ber [7]3 years ago
6 0
The process described here is called "Evaluating" the expression... if that's what you're looking for?
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Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete
icang [17]

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET  mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine  will be  (x -4 +3) = x-1 years old

Also, In 3 years time

Christine  = 2/3 Mark

such that

  x-1 = 2/3(x+3)

  x -1= 2x+6 / 3

    3x  -3= 2x+6

      3X--2X = 6+3

         =X=9

Mark Is 9 years old

Christine is   x -4 = 9-4=5 years old

5 0
3 years ago
CAN YOU HELP ME WOTH GEOMETRY! It's due TONIGHT!
mash [69]

Answer:

look down below

Step-by-step explanation:

We know that AB = DC, and BC = AD, ∠B = ∠D because they are given

So, ΔABC ≅ ΔCDA because of SAS congruency

3 0
3 years ago
What is the surface area of the rectangular prism
anastassius [24]

340 you were right

Step-by-step explanation:

3 0
3 years ago
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The yearly cost in dollars, y, at a video game arcade based on total game tokens purchased, x, is y = x + 60 for a member and y
morpeh [17]
<span>We have the yearly cost in dollars y at a video game arcade based on total game tokens purchased x. So we know that:

</span>y=x+60:\ equation \ for \ a \ member<span>

</span>y=x:\ equation \ for \ a \ nonmember<span>
</span><span>
Then we can study this problem by using the graph in the figure below. We know that if there's no any purchase, the yearly cost for a member will be $60 and for a nonmember there will not be any cost. From this, we can affirm that the cost of membership is equal to $60.

On the other hand, both members and nonmembers will pay the same price on the total game tokens purchased, this is true because of the same slope that members and nonmembers have in the equations.</span>

8 0
3 years ago
Read 2 more answers
Solve for x 1/2(x-3)=1/3(1-x)
Goshia [24]

Answer:

x=2.5906672908862554,−0.2573339575529219

7 0
3 years ago
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