Answer: price of soda (a) = $2 and price of popcorn (b) = $0.5
Step-by-step explanation:
Let's denote soda = a and popcorn = b
Kaylin bought a soda and two popcorn, writing out an equation for this would be
a + 2b = $3...........equation (i)
And her brother bought 3 sodas and 1 popcorn.
3a + b = $6.50..........equation (ii)
From equation (i),
a + 2b = 3
Making a the subject of formula,
a = 3 - 2b......equation (iii)
Using substitution reaction, put equation (iii) into equation (ii)
3(3 - 2b) + b = $6.50
9 - 6b + b = 6.50
9 - 5b = 6.50
Collecting like terms,
5b = 9 - 6.50
Divide both sides by 5,
b = 5.
Put b = 5 into equation (i)
a + 2(0.5) = 3
a + 1 = 3
a = 2
Therefore, the price of soda is $2 per one and $0.5 for each popcorn.
Answer:
The answer is 80. If you multiply 40 x 3 it is 120 and 40 x 2 is 80 so 2/3 of 120 is 80 NOT 40
Previously the volume of paint consumed was: 20 pints
New paint is available in unit of liters.
since, 1 pint = 0.47 liter
20 pint = 9.46 liters (10 liters approx.)
Mike will need to buy 10 liters of paint.
Answer:
.
Step-by-step explanation:
In ΔEMR and ΔNMR
MN ≅ MA Given
∠EMR ≅∠NMR Reflexive property
ME ≅ MR Given
ΔEMR ≅ ΔNMR S A S congruent - side Angle side
∠E ≅ ∠R Corresponding Part of Congruent Triangles