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tia_tia [17]
2 years ago
15

Với giá trị nào của r và s thì hạng của A bằng 2

Mathematics
1 answer:
Norma-Jean [14]2 years ago
6 0

Answer:

Please explain it in English

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PLEASE ANSWER ASAP
Anna007 [38]

Answer:

A reasonable estimate  for the solution is the point (1.1,-1.9)

Step-by-step explanation:

we have

y=-\frac{3}{4}x-1 -----> equation A

y=2x-4 ----> equation B

Solve the system by graphing

Remember that the solution of the system of equations is the interection point both graphs

using a graphing tool

The solution is the point (1.091,-1.818)

see the attached figure

therefore

A reasonable estimate  for the solution is the point (1.1,-1.9)

8 0
3 years ago
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You have 200 items that cost $20 and you are selling them at the price of $100.
allochka39001 [22]

Your total profit is $13,000. First you bought the 200 items for $20 each. That costs $4,000. Then you sold $50 of the items at $100 each. That’s $5,000. So already you’re in the green. You’ve already made $1,000 profit. Then you sold the rest of the items at a 20% discount. 150 items multiplied by $80 is $12,000. $12,000 plus the $1,000 equals $13,000 total.

3 0
2 years ago
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PLEAS HELP 2m · 2n would be the same as _____.<br><br> 4 mn <br>2 m + n <br>2 mn<br> 2 m - n
andriy [413]

4mn. You are multiplying them all together.

7 0
2 years ago
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A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes. (Use set notation for the domain and ran
Mamont248 [21]

A bicyclist travels at a constant speed of 12 miles per hour for a total of 45 minutes.

We know the formula , Distance = speed * time

Speed is constant and it is 12. So it  is linear

The function becomes d = 12t, x is the t is the time and d is the distance

At the starting point, t=0  and distance d=0

End point , t=45 min = 0.75 hours and distance = 12 * 0.75 = 9

So domain (t) is {x|0}

Range (d) is {y|0}

5 0
3 years ago
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Juana is 4 feet 8 inches tall. She won 1st place in a cross country race. To receive her medal she stood on a platform that was
ioda

Answer:

The distance from the top of her head to the floor is 6 feet 2 inches.

Step-by-step explanation:

In his case Juana's height is given to us with two kinds of units, feet and inches, in order to make our solution easyer we will transform her height to only inches. In 1 feet we have 12 inches, so we need to take the part of her height that is given in feet and multiply it by 12. We have:

height = 4*12 + 8 = 56 inches

Since she is in a platform that is 18 inches tall the distance from the top of her head to the floor is her height plus the height of the platform. We have:

distance = height + platform = 56 + 18 = 74 inches

We can now transform back to a mixed unit, we do that by dividing the distance by 12 that will be the "feet" part and the res of the division will be the "inches" part. We have:

distance = 74/12 = 6 feet 2 inches

The distance from the top of her head to the floor is 6 feet 2 inches.

6 0
3 years ago
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