Dave is correct you add the price of the 2 cups of coffee and piece of cake together 2.75+2.75+2.90= £8.40 then you subtract that from £10 so £10-£8.40= £1.60 which is more then £1.50

6 0

3 years ago

A and b are positive integers and a - b = 2. Evaluate the following: 3b/3а

AlexFokin [52]

Answer and Step-by-step explanation:

a - b = 2

$\frac{3b}{3a}$ = $\frac{b}{a}$

b = a - 2

a = b + 2

______________

b = b + 2 - 2

b = b

______________

a = a - 2 + 2

a = a

______________

If a equals 0, then the expression is undefined.

If b = 0, then the expression is 0.

There are infinite number of solutions when a is not 0 and the numbers are positive.

#teamtrees #PAW (Plant And Water)

5 0

3 years ago

Solve for r. You must write your answer in fully simplified form. -9=-6r

Pie

Answer:

r=3/2

Step-by-step explanation:

-9=-6r

divide -6 on both sides to get r alone.

-9/-6 = r

then simplify. remember that 2 negatives make a positive

r=3/2

5 0

3 years ago

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