2/3 ÷ (-5/6)=
a 5 4/9
b -4
c 11/2
b -4/5
The correct answer is c) 11/2.
The temperature at noon was 5°C. By 11:00 p.m. on the same day, the temperature decreased by 7.2°C. What was the temperature at 11:00 p.m.?
To find the temperature at 11:00 p.m., we need to subtract 7.2°C from the temperature at noon.
5°C - 7.2°C = -2.2°C
Therefore, the temperature at 11:00 p.m. was -2.2°C.
-1/4 x (-4/3) as a fraction
To find the product of (-1/4) and (-4/3), we multiply the numerators together and the denominators together:
(-1/4) * (-4/3) = (1*4) / (4*3) = 4/12
To simplify the fraction, we can divide both the numerator and the denominator by their common factor, which is 4:
4/12 = 1/3
Therefore, (-1/4) * (-4/3) as a fraction is 1/3.
Mark sold boxes of cookies for $12.50 each. It costs his $2.50 to bake and package each box. What was his profit from selling each box?
To find Mark's profit from selling each box of cookies, we need to subtract the cost of baking and packaging each box from the selling price of each box.
Profit = Selling Price - Cost
Profit = $12.50 - $2.50
Profit = $10.00
Therefore, Mark's profit from selling each box of cookies is $10.00.
Find the value of the expression below: -3 +5.5- (-1 1/5)
To find the value of the expression -3 + 5.5 - (-1 1/5), we can simplify the expression step by step:
First, let's simplify the expression (-1 1/5). We can rewrite this as a mixed number:
-1 1/5 = -1 - 1/5 = -6/5
Now, let's substitute this value back into the original expression:
-3 + 5.5 - (-1 1/5) = -3 + 5.5 - (-6/5)
Next, let's simplify the expression with the subtraction of a negative number by changing it to addition:
-3 + 5.5 + (6/5)
Now, we need to find a common denominator for the fractions in the expression. The common denominator is 5:
(-3*5/5) + (5.5*5/5) + (6/5) = -15/5 + 27.5/5 + 6/5
Combine the numerators:
(-15 + 27.5 + 6) / 5 = 18.5 / 5
Divide the numerator by the denominator:
18.5/5 = 3.7
Therefore, the value of the expression -3 + 5.5 - (-1 1/5) is 3.7.
6 1/2 ÷ (-2 3/4) =
A non-repeating decimal
B non-terminating decimal
C bar notation
D -2 4/11