(8/15)*(-3/10)
multiply numerators and denominators: -24/150
simplify: -4/25
the answer is A.
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Answer:
Step-by-step explanation:
x=81
63+36+x=180
99+x=180
99+81=180
y and z both equal 81
13+y+z=180
180-13=167
167/2 is 83.5
13+83.5+83.5
13+167
180
You do 7 times 2 in parentheses and then minus that by 6-4 in parentheses so it will look like this , (7times2) - (6-4) = 12
Answer:
The price of one cookie is $1.25 and the price of one cake is $15.
Step-by-step explanation:
Let $x be the price of one cookie and $y be the price of one cake.
1. On Monday, Sean bought 3 cookies and 5 cakes, then he spent $(3x+5y) and this is $78.75. Thus,

2. On Tuesday, Sean bought 8 cookies and 2 cakes, then he spent $(8x+2y) and this is $40. Thus,

3. Solve the system of two equations:

Multiply the first equation by 2 and the second equation by 5 and subtract them:

Then
