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Andre45 [30]
3 years ago
11

20 POINTS HELP ASAP!! GEOMETRY!!

Mathematics
2 answers:
kipiarov [429]3 years ago
7 0

ANSWER:

[i] “p therefore q.”

[ii] “p if and only if q.”

[iii] “p and q.”

[iv] “p or q.”

[v] “p and not q.”

[vi] “if q then not p.”

[vii] “if not p then q.”

quester [9]3 years ago
3 0

Answer:

See below:

Step-by-step explanation:

p \:  \therefore \: q \implies \: p \: therefore \: q \\  \\ p \:   \iff \: q \implies \: p \: if \: and \: only \: if \: q \\  \\ p \:  \land \: q \implies \: p \: and \: q \\  \\  p \:  \lor \: q \implies \: p \: or \: q \\  \\ p \:  \land \:  \sim \: q \implies \: p \: and \: not \: q \\  \\  q \:  \implies \:  \sim \: p \implies \: if \: q \: then \: not \: p \\  \\  \sim \: p \implies \: q \implies \: if \: not \: p \: then \: q

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Tony and Cleo are donating some of their books to a hospital. If Tony contributes half of his books and Cleo gives one third of
liraira [26]
Short Answer: Tony 40 Cleo 30
Givens

T = Tony
C = Cleo

Equations
1/2 T + 1/3 C = 30      (1)
2/5 T + 1/2 C = 31       (2)

Adjustments
Multiply  (1) by 3
Multiply (2) by 2

New Equations
3/2 T + C = 90      (1a)
<u>4/5 T + C = 62</u>      (2a) Subtract (2a) from (1a)
(3/2 - 4/5)T = 28                      the common multiple of 2 and 5 = 10. 
(15/10 - 8/10)T = 28
7/10 T = 28                              Multiply by 10
7T = 28*10
7T = 280  Divide by 7
T = 280/7 = 40

Put T = 40 into (1)
1/2 T + 1/3 C = 30
1/2 (40) + 1/3 C = 30
20 + 1/3 C = 30                      Subtract 20 from both sides.
1/3 C = 30 - 20
1/3 C = 10                              Multiply through by 3
C = 10 * 3
C = 30

Answer:
Cleo has 30 books.
Tony has 40 books.

Check
<em>Use Equation 2</em>
2/5 T + 1/2 C = 31
2/5*40 + 1/2 * 30 = ? 31
16 + 15 =?3`
31 = 31 They are equal.

4 0
3 years ago
CAN SOMEONE PLEASE EXPLAIN THIS, I DONT NEED THE ANSWER ONLY EXPLANATION!!!!! HELP FASTTTTT THE ANSWER IS HEAT WAS ADDED
sergij07 [2.7K]

Answer:

C

Step-by-step explanation:

The substance in the second beaker must have lost heat for it to solidify

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Gre4nikov [31]

Answer:

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Step-by-step explanation:

Multiply $20 by 0.25 (which is 25% as a decimal)

$20 x 0.25 = $5

Add $5 to $20 which makes the answer $25

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3 years ago
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If a star is measured to have a parallax angle of 0.5 arcsec, how far away is the star?
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I think it’s a (b) because that one makes sence
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3 years ago
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