I like to do it by adding 4 and 3 to get 7. then divide 35 by 7. that would be 5. take 5*4 to get 20 boys and 5*3 to get 15 girls.
Answer:
x = -2
y = -2
Step-by-step explanation:
7 × -2 = -14 + -14 = -28 so x and y equal -2
5. 114 ounces .
Explaination : ONE pound is 16 ounces . 7 pounds would be 112. add 112 plus the 2 ounces = 114 ounces
6. a. FALSE, 4 kilograms is 4,000 grams
b. TRUE , 10 yards = 360 inches
c. FALSE , 10 liters = 10,000 milliliters
X*80+y*60= 50*74
x +y =50 | * ( -60)
80x + 60y= 50*74
-60x - 60y=-50*60
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20x= 50*(74-60)=50*14
x=50*14/20=35 pounds of 80 cents tea
y=50-35=15 pounds of 60 cents tea
