Answer:
geraldo has 9 marbles and yan has 12
Step-by-step explanation:
x + (x-3) = 21
x + x - 3 = 21
2 x - 3 = 21
Explanation:
In this problem, let us first analyze the situation. It says here that Geraldo and Yan both had marbles of their own. The problem states that together, they have a total of 21 marbles. However, we know here from the problem that they have different number of marbles each. Geraldo seems to have lesser number of marbles than Yan. Yan have three marbles more than Geraldo.
We can write the equation starting from assigning the unknown.
We'll use x.
x is the number of marbles that Yan have.
if x is Yan's, then, we can say that x-3 is Geraldo's.
Put them together into the equation.
Yan's plus Geraldo's is equal to 21.
Substitute using the represented unknowns.
x + (x-3) = 21.
In solving, we can also rule out that:
x + x - 3 = 21
2 x - 3 = 21
2 x = 21 + 3
2 x = 24
x = 12
x - 3 = 9
Yan has 12 marbles
and Geraldo has 9 marbles.
Answer:
A 192 cm2
Step-by-step explanation:
I took the test
Since both A and B are squared they can be added normally. So A+B would be
(5x^2)+(-3x^2+6) = 2x^2+6.
Answer:
I believe that the answer is either C or D
Step-by-step explanation:
Jake forgot his snack, which could mean that he was hungry at school. But it could be logical to assume that he forgot his breakfast. I may be wrong in both cases, but these are my best guesses!
Answer:
Andy ate 41 hot dogs
Barry ate 36 hot dogs
Carl ate 26 hot dogs
Step-by-step explanation:
Let the quantity of hot dogs eaten by Andy, Barry and Carl be A, B and C respectively.
Andy ate 5 more than Barry =>
A = B + 5. (Equation i)
Carl ate 10 less than Barry =>
C = B - 10. (Equation ii)
The three atr the total or 103 hot dogs.
ie. A + B + C = 103 (Equation iii)
From i and ii, substitute (B + 5) for A and (B - 10) for C in equation (iii)
(B + 5) + B + (B - 10) = 103
B + 5 + B + B - 10 = 103
B + B + B + 5 - 10 = 103
3B - 5 = 103
3B = 103 + 5
3B = 108
B = 108/3
B= 36
From equation (i)
A = B + 5
A = 36 + 5
A = 41
From equation (ii)
C = B - 10
C = 36 - 10
C = 26
Andy ate 41 hot dogs
Barry ate 36 hot dogs
Carl ate 26 hot dogs