Answer:
Step-by-step explanation:
We are to multiply;
× 
We first multiply 2 × 5 to get 10
Then multiply 3 × 7 to get 21
Finally divide 10 ÷ 21 to get
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Complete Question
A Chinese restaurant has the family special shown at right. What is the original average cost of the entrees if the discount is $2 per entree? ANY FOUR ENTREES FOR $20
Answer:
$7
Step-by-step explanation:
From the question we are told that :
Any 4 entrees = $20,
And there is a discount of $2 per entree.
Let us represent the original average cost of entrees as = a
Hence, we have the algebraic expression
4(a - 2) = 20
4a - 8 = 20
4a = 20 + 8
4a = 28
Divide both sides by 4
4a/4 = 28/4
a = 7
Therefore, the original average cost of the entrees if the discount is $2 per entree is $7.
Answer: p= 13/12 - 1/60r
Step-by-step explanation:
Move the variable to the left hand side and Chang the sign.
60p+ r=65
60p=65-r
Divide both sides by 60
P=13/12-1/60r
Answer:
decrease of 64.3%
Step-by-step explanation:
Percentage change can be calculated from ...
pct change = ((new value)/(original value) -1) × 100%
= (50/140 -1) × 100%
= (-9/14)×100% = -64 2/7% ≈ -64.3%
The price of crude fell about 64.3% in that period.
31
since A = 1/2 b h, and the A is 279 and the height is 18, we can plug them in and solve for b.
