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MrRa [10]
3 years ago
13

If sin A is negative and cos A is positive, what

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

Quadrant 4

Step-by-step explanation:

sinA < 0 in quadrants 3 and 4

cosA > 0 in quadrants 1 and 4

Thus sinA < 0 and cosA > 0 in quadrant 4

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Tony has 8 yards of fabric. how many inches does he have?
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Tony has 288 inches of fabric because there are 36 inches in a yard.
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the volume of a box is 45x^3 + 198x^2 + 189x. find expressions for the possible dimensions of the prism
Oxana [17]

Answer:

length, width, and height are (b+2), (b-2), (b+3)

Step-by-step explanation:

Doing what the problem statement tells you to do, you get ...

 (b^3 +3b^2) -(4b +12)

 = b^2(b +3) -4(b +3) . . . factor each pair of terms

 = (b^2 -4)(b +3) . . .  write as a product

 = (b -2)(b +2)(b +3) . . . use the factoring of the difference of squares

The three factors are (b-2) , (b+2) , and (b+3). We have no clue as to how to associate those with length, width, and height. We just know these are the dimensions of the box.

7 0
3 years ago
Work Rate One worker can complete a task in h hours while a second can complete the task in 3h hours. Show that by working toget
Sliva [168]

Answer: t = (3/4)h hours.

Therefore, it takes both of them (3/4)h hours to complete the task.

Step-by-step explanation:

Let

t1 represent the time taken for the one worker to complete a task.

t2 represent the time taken for the second worker to complete a task

And t represent the time taken for both.

t1 = h

t2 = 3h

Let x represent the task.

x = rate × time

r1,r2 and r are the rates at which first, second and both worker works

x = r1(t1). .....1

x = r2(t2). ....2

x = r(t) ....3

And,

r = r1 + r2. ( Rate of both equals sum of rates of the two)

From eqn 1 and 2

r1 = x/t1 = x/h

r2 = x/t2 = x/3h

r = r1 + r2 = x/h + x/3h = 4x/3h

Substituting r = 4x/3h into equation 3

x= r(t)

x = (4x/3h)t

Making t the subject of formula

t = x/(4x/3h)

t = 1/(4/3h)

t = 3h/4

t = (3/4)h hours.

Therefore, it takes both of them (3/4)h hours to complete the task.

7 0
3 years ago
200 people were surveyed in order to see which store was more popular for buying groceries. Of these people, 115 were female and
miv72 [106K]

Answer  The percentage of male is 57.5 %

Step-by-step explanation:


4 0
3 years ago
you draw two marbles without replacement from a bag containing four red marbles, two Yellow Marbles and five blue marbles, find
AleksAgata [21]

A bag contains four red marbles, two Yellow Marbles and five blue marbles.

Two marbles are drawn at random without replacement.

Total number of marbles are,

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There are 11 ways to select first marble and 10 ways to select second marble.

The total number of possible outcomes are calculated as,

Total\text{ number of outcomes = 11 }\times\text{ 10 = 110 }

Thus the total number of possible outcomes are 110.

7 0
1 year ago
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