Answer:
x= -27 y=18
Step-by-step explanation:
plug in zero for x to find y and plug in zero for y to find x
Let x = number of 5 cent coins.
Then there are (x+2) 10 cent coins.
Let y = 20 cent coins.
Total coins: x+(x+2)+y = 30
2x+y=28
y = 28-2x (1)
Total value: 0.05x + 0.1(x+2) + 0.2y = 3.80
0.15x + 0.2y + 0.2 = 3.80
0.15x + 0.2y = 3.60 (2)
Substitute (1) into (2).
0.15x + 0.2(28-2x) = 3.60
-0.25x + 5.60 = 3.60
2.00 = 0.25x
8 = x
From (1), obtain y = 28 - 2(8) = 12
Answer: (x+2) = 8+2 = 10
Louise has 10 10-cent coins
Answer:
the line modeling the baking powder and the flour used
Step-by-step explanation:
plato master test
Answer:
Fractions , Rational numbers ,Real numbers
Step-by-step explanation:
-3/5 is arguably a real number
Answer:
The width w of the rectangular park = 1/2
Step-by-step explanation:
Given
The length of the rectangular park l = 2/3 miles
The area of the park A = 3/9 square miles
To determine
The width of the rectangular park w = ?
Using the formula of the Area of the rectangle


∵ Fraction rule: 


Therefore, the width w of the rectangular park = 1/2