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oksano4ka [1.4K]
3 years ago
5

6) A plane is preparing to land. It is at an altitude of

Mathematics
1 answer:
slavikrds [6]3 years ago
3 0

Answer:

b

Step-by-step explanation:

4800-1400 because 200*7 equals 1400.

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Melinda wants to reduce her expenses so she can balance her budget. Which variable expense can Melinda easily adjust?
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B. Because you can easily just eat at home and avoid paying to eat

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3 years ago
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A cube shaped container has an edge length of 2/3 feet what is the volume of the container
Dahasolnce [82]
To find the volume, you cube the edges.
So make it easier, you can cube the numerator and then the denominator.
2*2=4*2=8
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8/27
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3 years ago
A table is on sale for 65% off. the sale price is $154 . what is the regular price?
Yuliya22 [10]
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3 years ago
HELP <br> what is the equation of the lines in slope - intercept form
34kurt

Answer:

y=7x

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3 0
2 years ago
1. Consider the following hypotheses:
Andrej [43]

Answer:

See deductions below

Step-by-step explanation:

1)

a) p(y)∧q(y) for some y (Existencial instantiation to H1)

b) q(y) for some y (Simplification of a))

c) q(y) → r(y) for all y (Universal instatiation to H2)

d) r(y) for some y (Modus Ponens using b and c)

e) p(y) for some y (Simplification of a)

f) p(y)∧r(y) for some y (Conjunction of d) and e))

g) ∃x (p(x) ∧ r(x)) (Existencial generalization of f)

2)

a) ¬C(x) → ¬A(x) for all x (Universal instatiation of H1)

b) A(x) for some x (Existencial instatiation of H3)

c) ¬(¬C(x)) for some x (Modus Tollens using a and b)

d) C(x) for some x (Double negation of c)

e) A(x) → ∀y B(y) for all x (Universal instantiation of H2)

f)  ∀y B(y) (Modus ponens using b and e)

g) B(y) for all y (Universal instantiation of f)

h) B(x)∧C(x) for some x (Conjunction of g and d, selecting y=x on g)

i) ∃x (B(x) ∧ C(x)) (Existencial generalization of h)

3) We will prove that this formula leads to a contradiction.

a) ∀y (P (x, y) ↔ ¬P (y, y)) for some x (Existencial instatiation of hypothesis)

b) P (x, y) ↔ ¬P (y, y) for some x, and for all y (Universal instantiation of a)

c) P (x, x) ↔ ¬P (x, x) (Take y=x in b)

But c) is a contradiction (for example, using truth tables). Hence the formula is not satisfiable.

7 0
3 years ago
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