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Verizon [17]
2 years ago
5

Sử dụng phép tính mệnh đề (các luật logic) để chứng minh các biểu thức sau là hằng

Mathematics
1 answer:
allsm [11]2 years ago
5 0

Answer: “P hay Q” là một mệnh đề được

Step-by-step explanation: Các quy tắc tương đương logic: ... Chứng minh biểu thức mệnh đề (¬((r ∨ q) ∧ q) ∨. ¬p)∧ ((¬p

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Describe the graph the inequality on a number line: -7 ≥ g - 21 I need help on this its due today and ill give large sum of poin
Gekata [30.6K]

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Step-by-step explanation:

5 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B4%7D%20-%20%20%5Cfrac%7B3%7D%7B8%7Dy%20%3D%203%20%5C%5C%20" id="TexFormula
MariettaO [177]

Answer:

(6, - 4 )

Step-by-step explanation:

Given the 2 equations

\frac{x}{4} - \frac{3}{8} y = 3 → (1)

\frac{5}{3} x - \frac{y}{2} = 12 → (2)

Multiply (1) by 8 and (2) by 6 to clear the fractions

2x - 3y = 24 → (3)

10x - 3y = 72 → (4)

Rearrange (3) expressing - 3y in terms of x by subtracting 2x from both sides

- 3y = 24 - 2x

Substitute 3y = 24 - 2x into (4)

10x + 24 - 2x = 72, that is

8x + 24 = 72 ( subtract 24 from both sides )

8x = 48 ( divide both sides by 8 )

x = 6

Substitute x = 6 in either (3) or (4) and solve for y

Substituting in (3)

2(6) - 3y = 24

12 - 3y = 24 ( subtract 12 from both sides )

- 3y = 12 ( divide both sides by - 3 )

y = - 4

Solution is (6, - 4 )

3 0
3 years ago
Please Help me with the problem please!​
evablogger [386]

Answer:

35%

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calculating percentage:

18÷50×100

= 36%

4 0
2 years ago
Factor the expression.
valentinak56 [21]
It is (d+5)(d+5) because 5•5 is 25 and 5+5 is 10
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3 years ago
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