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Lerok [7]
3 years ago
6

Find two pairs of integers x and y that satisfy the equation 2x+3y=40cm

Mathematics
1 answer:
trapecia [35]3 years ago
7 0
Two pairs of integers can be ...
(-1, 14) and (2, 12)

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The multipliers of this system of equations have been determined to create opposite terms of the y-variable.
sergiy2304 [10]

Answer:

-48

Step-by-step explanation:

i think im sorry if im wrong

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Describe the series of rigid transformations that maps pqs onto p’’’q ’’’s ’’’ .explain.
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It’s triangular your welcome hint q
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Solve the equation by completing the square.Round to the nearest hundredth if necessary. X^2–x–7=0
lesya [120]
NOTE:  \left(x-\dfrac{1}{2}\right)^2=x^2-x+\dfrac{1}{4}

x^2-x-7=0 \\ \\ \underbrace{x^2-x+\frac{1}{4}}_{\left(x-\frac{1}{2}\right)^2}-7\dfrac{1}{4}=0 \\ \\  \\ \left(x-\frac{1}{2}\right)^2=7\frac{1}{4}=\frac{29}{4} \qquad /\sqrt{}\\ \\  \left|x-\frac{1}{2}\right|=\dfrac{\sqrt{29}}{2} \\ \\  x_1=\dfrac{1}{2}-\dfrac{\sqrt{29}}{2} \approx  -2.19 \\ \\ x_2=\dfrac{1}{2}+\dfrac{\sqrt{29}}{2} \approx 3.19

ANSWER:  c)

5 0
3 years ago
Three cards are randomly selected from a standard 52-card deck, one at a time, with each card re- placed in the deck before the
hammer [34]

Answer:

\frac{1}{4}

Step-by-step explanation:

Three cards are randomly selected from a standard 52-card deck.

Number of heart cards in a deck = 13

Each card replaced in the deck before the next one is picked.

Probability of first card is heart = P_{1}=\frac{13}{52}

After replacement, the probability of second card is heart = P_{2}=\frac{13}{52}

after replacement, the probability of third card is heart =  P_{3}=\frac{13}{52}

P =  \frac{13}{52} ×  \frac{13}{52} ×  \frac{13}{52}

  =  \frac{39}{156}

  =  \frac{1}{4}

The probability of all three cards are hearts is  \frac{1}{4}

3 0
3 years ago
How to subtract 23 from 71 is like subtracting 3 from 71? How is it different from subtracting 3 from 71? Explain.
irga5000 [103]

Answer:

it is different by the numbers are changing so the answers are different and the 3 is one digit and 23 is two digits.

Step-by-step explanation:

5 0
3 years ago
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