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Vinvika [58]
3 years ago
11

Which ordered pair is a solution to this system of equations. 7x+5y=59 and 3x-9y=159

Mathematics
2 answers:
Helen [10]3 years ago
8 0

Answer:

the answer is c

Step-by-step explanation:

7(17)+5(-12)=59

3(17)-9(-y)=159 - two negative signs cancels each other and becomes a positive

alina1380 [7]3 years ago
7 0
Your is answer should be D
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Afina-wow [57]

Answer:

8 units of Hot dog

Step-by-step explanation:

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As we can see from the attached figure that at the number of 8 hot dogs the total utility is maximum i.e 55

Therefore in the given case, the optimal number of hot dogs he will eat is 8 as at this point the total utility is more as compared to the other utilities

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3 years ago
What do graphs of functions have in common?
Sedaia [141]

Answer:

x and y points on a plane

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3 years ago
Suppose you want to prove a theorem of the form p → (q ∨ r). Prove that this is equivalent to showing that (p ∧ ¬q) → r.
tino4ka555 [31]

You "distributed" the negation inside the parenthesis. Let's focus on the \lnot (p\wedge \lnot q) part.

We can distribute the negation inside the parenthesis by negating every term, and switching and with or, and vice versa. So, you have

\lnot (p\wedge \lnot q) \equiv (\lnot p) (\lnot \wedge) (\lnot \lnot q)

Of course, writing \lnot \wedge is improper, I was just stressing the fact that we distributed the negation to every term in the parenthesis. So, since a double negation cancels out, you're left with

\lnot (p\wedge \lnot q) \equiv \lnot p \lor q

which of course implies that

\lnot (p\wedge \lnot q) \lor q \equiv (\lnot p \lor q) \lor q

Edit: I actually derived the expression in the opposite order, but since they are equivalent, it doesn't really matters where you start from and where you get to. Anyway, if you actually want to derive \lnot (p \wedge \lnot q) \lor r from (\lnot p \lor q), you simply have to negate the first parenthesis and distribute the negation as discussed.

7 0
3 years ago
How do the absolute values of -12.5 and 11.5 compare?Chose a symbol to make the sentence true
barxatty [35]

Answer:

|-12.5| > |11.5|

Step-by-step explanation:

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3 0
3 years ago
...........................
enyata [817]

Answer:

The value of r to be out in the given formula is r = 0.048.

Step-by-step explanation:

The rate is given as  4.8%.

Now to put the value of interest in the given formula,

We need the value of r.

r = \frac{r \%}{100}   = \frac{4.8}{100} = 0.048

Hence, the value of r to be out in the given formula is r = 0.048.

3 0
3 years ago
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