Combine like terms in Qx + 12 = 13x + P:
x(Q-13) = P-12
P-12
Then x = ----------
Q-13
Note that Q may not = 13. But none of the answer choices present Q = 13.
Let's go thru the answer choices one by one.
P-12
x = ----------
Q-13
-24
Check out A: Q=12 and P= -12: x = -------- = 24 This is OK (ONE sol'n)
-1
-25
Check out B: Q = -13 and P = -13: x = ----------- = 25/26 OK
-26
13-12
Check out C: Q = -13 and P = 13: x = ------------ = -1/26 OK
-13-13
12-12
Check out D: Q = 12 and P = 12: x= ---------- = 0 OK
12-13
It appears that in all four cases, the equation has ONE solution.
Answer:
Y= -5+ 1/4x
There are other ways to write too
Answer:
Convert the fraction to a decimal by dividing the numerator by the denominator.
0.1
¯¯¯¯
36
Step-by-step explanation:
They sold 76 t-shirts and 24 warm up pants.
Step-by-step explanation:
Cost of one t-shirt = $20
Cost of warm up pants = $45
Total sold = 100
Worth of sold items = $2600
Let,
x be the number of t-shirts.
y be the number of warm up pants.
According to statement;
x+y=100 Eqn 1
20x+45y=2600 Eqn 2
Multiplying Eqn 1 by 20
Subtracting Eqn 3 from Eqn 2
Dividing both sides by 25
Putting y=24 in Eqn 1
They sold 76 t-shirts and 24 warm up pants.
Keywords: linear equations, elimination method
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Answer:
5400
Step-by-step explanation:
60 min=1 hour
120 min=2 hr
120 x 45=5400
