2 years ago

What are the answers

Mathematics

1 answer:

Xelga [282]2 years ago

4 0

Answer:

1. yes

2. no

Step-by-step explanation:

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Is the ordered pair (-2, 1) a solution to the equation - 3x + y = 5? <br>No <br>Yes

Otrada [13]

Answer:

Step-by-step explanation:

Plug (-2,1) into -3x+y=5. This will make it -3(-2)+(1)=5. This is equal to 6+1=5. 7=5. 7 is not equal to 5. Therefore, (-2,1) is not a solution to the equation -3x+y=5.

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3 years ago

Which expression represents "5 less than the product of 9 and the sum of a number and 3"?

Nikitich [7]

Answer:

(9(x+3))-5

Step-by-step explanation:

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3 years ago

Each side of a square is increasing at a rate of 5 cm/s. At what rate (in cm2/s) is the area of the square increasing when the a

nikklg [1K]

Answer:

knkkl

Step-by-step explanation:

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2 years ago

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Sofia takes 10mg of a medicine whose concentration in blood decreases by a factor of one half every day. Let t be the number of

adelina 88 [10]

Answer:

$L = 10(\frac{1}{2} )^{t-4}$

Step-by-step explanation:

If t is the number of days since Sofia took the medication of 10 mg, then the amount of medication in her system after t days will be $S = 10(\frac{1}{2} )^{t}$ .

So, the concentration of medicine in blood decreases by a factor of one half every day.

If we count the number of days from today and Lexi takes 10 mg of the same medicine four days later then the amount of medicine left on her body after t days will be $L = 10(\frac{1}{2} )^{t-4}$ . (Answer)

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3 years ago

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A sprinter can run 279 feet in 9 seconds. Find the sprinter's unit rate of feet per second.

TiliK225 [7]

Easy 31 feet per second take 279 and divide it by 9 and you get 31

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3 years ago