Answer: the cost of each bush is $15
the cost of each flower is $2
Step-by-step explanation:
Let x represent the cost of each bush.
Let y represent the cost of each flower.
Portia bought 12 bushes and 30 flowers for $240 to plant in her yard. This is expressed as
12x + 30y = 240- - - - - - - - - - -1
Later, she realized she did not have enough plants and bought 7 more bushes and 10 more flowers for $125. This is expressed as
7x + 10y = 125- - - - - - - - - - -2
Multiplying equation 1 by 7 and equation 2 by 12, it becomes
84x + 210y = 1680
84x + 120y = 1500
Subtracting, it becomes
90y = 180
y = 180/90
y = 2
Substituting y = 2 into equation 1, it becomes
12x + 30 × 2 = 240
12x + 60 = 240
12x = 240 - 60 = 180
x = 180/12
x = 15
Answer:
6 cups
Step-by-step explanation:
Make a proportion
3 cups of peanuts to 2 cups of chocolate, and 9 cups of peanuts for x cups of chocolate
3/2=9/x
Cross multiply
3*x=2*9
3x=18
Divide by 3 on both sides
x=6
So, 6 cups of chocolate for 9 cups of peanuts
Hope this helps! :)
the hexagons ∑ 720
(x - 20) + (110) + (120) + (130) + (x - 40) + (x - 60) = 720
3x + 240 = 720
3x + 240 (-240) = 720 (-240)
3x = 480
3x/3 = 480/3
x = 160
plug in x, and simplify
m∠F = x - 20
m∠F = (160) - 20
m∠F = 140
hope this helps
0.17 becomes 0.2 square miles.
This is because the tenth number is the number right after the decimal point.
If the number in the hundredths column (the one after the tenths) is greater than 5, the tenth will be rounded one number up, so 0.17 becomes 0.2.
If the number in the hundredths column is less than 5, e.g. 0.13, the number would be rounded to 0.1.
Answer:
22.5
Step-by-step explanation:
25% of 90 = 25/100 × 90
= 1/4 × 90 = 90/4 = 45/2 = 22 1/2 or 22.5