Answer:
6(4+y)
Step-by-step explanation:
sum is adding and times is multiply
Answer:
just watch the ads
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
6.4 / 1.6 = 4
1.6 goes into 6.4 four times
Answer:
.7pi
Step-by-step explanation:
To convert from degrees to radians, multiply by pi/180
126 * pi/180
.7 pi
Answer:
- cookie: $1.25
- cupcake: $2.75
Step-by-step explanation:
Let x and y represent the cost of a cookie and a cupcake, respectively.
4x +3y = 13.25
5x +2y = 11.75 . . . . . . the system of equations
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By Cramer's rule:
x = (3(11.75) -2(13.25))/(3(5) -2(4)) = 8.75/7 = 1.25
y = (13.25(5) -11.75(4))/7 = 19.25/7 = 2.75
The cost of one cookie is $1.25; the cost of one cupcake is $2.75.
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Cramer's rule gives the solution to the system of equations ...
ax +by =c
dx +ey = f
as ...
∆ = bd -ea
x = (bf -ec)/∆
y = (cd -fa)/∆