Mathematical operations are often represented by specific words or phrases in word problems. Addition is represented by phrases such as 'in all', 'together', 'total', 'plus', or 'and', subtraction with 'less than', 'fewer than', 'minus', 'difference', or 'take away'. Multiplication may be represented by 'of', 'times', 'every', 'product', or 'at this rate', and division by 'per', 'each', 'out of', 'ratio of', 'quotient', or 'separated equally'.
Mathematical operations often have keyword phrases associated with them. If you're asked to determine which operation a particular word or phrase represents, here's a simplified list:
Understanding these word representations can help you tackle
word problems
more efficiently in mathematics.
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What is the probability of drawing a restaurant coupon?
A.The experimental probability is 20%. B.The experimental probability is 50%. C.The theoretical probability is 20%. D.The theoretical probability is 50%.
Answer:
As per the statement:
On Monday, she earned $21.60.
It is also given that:
Each day, her daily earnings increase by $1.50.
in 1 day = increases by $1.50
then;
in 3 days=increased by
We have to find how much will Mary earn on Thursday of the same week.
She earn on Thursday of the same week = $21.60 + $4.50 = $26.10
Therefore, $26.10 much will Mary earn on Thursday of the same week.
Which relation is a function? A.{(1, 2); (2, 3); (3, 4); (2, 5)} B.{(1, 2); (1, 3); (1, 4); (1, 5)} C.{(1, 2); (2, 3); (3, 4); (1, 5)} D.{(1, 2); (2, 2); (3, 2); (4, 2)}
For the function f(x) = 2 – 3x, find f(4). A.–5 B.12 C.–10 D.14
Which equation represents a direct linear variation? A.y = x – 3 B.y=1/3x C.y = x^2 D.y=1/x
Which is the direct linear variation equation for the relationship?
y varies directly with x and y = 12 when x = 4.
A.y = 3^x B.y = x + 8 C.y = 2x + 4 D.y = x – 8
Which is the quadratic variation equation for the relationship?
y varies directly with x2 and y = 48 when x = 2.
A.y = 4x^2 B.y = 4x C.y = 12x^2 D.y = x^2 + 25
Write the inverse variation equation for the relationship: y varies inversely with x and y = 4 when x = 2. A.y = 2x B.y=8/x C.y = x + 2 D.y=1/2x
Answer:
7 mph
Step-by-step explanation:
Let x be the speed in still water hence
Time to move downstream will be
Time to move upstream will be
Difference will be
x=7