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Brut [27]
3 years ago
9

What is the apparent solution to the system of equations?

Mathematics
1 answer:
Alexus [3.1K]3 years ago
7 0
X = 3
y = -3

You will see this using any graphing tool at your disposal. 
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The monthly cost (in dollars) of a long-distance phone plan is a linear function of the total calling time (in minutes). The mon
kupik [55]

Answer:

The cost is;

$18.43

Step-by-step explanation:

The general model for a linear equation is;

y = mx + b

let y be the monthly cost in dollars

x is the number of minutes

b will represent the base cost

m is the cost of the call per minute

so let us get m and b

Thus, we have;

18.25 = 31m + b

19.42 = 44m + b

Subtract i from ii

(19.42-18.25) = (44-31)m

1.17 = 13m

m = 1.17/13 = 0.09

To get b, we substitute the value of m in any of the equation

18.25 = 31 m + b

18.25 = 31(0.09) + b

b = 18.25 - 2.79

b = 15.46

so, the equation of the line is;

y = 0.09x + 15.46

Now to get the cost for 33 minutes

simply substitute the value of 33 for x

we have this as;

y = 0.09(33) + 15.46

y = $18.43

8 0
3 years ago
1. What is the negation of the following: "If this triangle has two 45 degree angles then it is a right triangle."
meriva

Answer:

Let  

  • p : this triangle has two 45 degree angles  
  • q : it is a right triangle

Step-by-step explanation:

Denote

  • r : if this triangle has two 45 degree angles then it is a right triangle

Then, r can be written  as follows

  • p \rightarrow q

Since (p \rightarrow q) \iff (\neg p \lor q) is a tautology, you get

  • \neg(p\rightarrow q)\iff\neg(\neg p \lor q)  

and given that  

  • \neg(p\rightarrow q)\iff(p \land \neg q) (\mbox{double negation and Morgan's Lows})

it follows that the negation of r is

  • " this triangle has two 45 degree angles and it is not a right triangle".

Then, the correct answer is C.

5 0
3 years ago
Translate this sentence into an algebraic equation. 8 less than the product of 5 and y is 16
lisov135 [29]

The answer is 8-5+y=16

HIPE THIS HELPS!

HAVE A GR8 DAY ;-)

9 0
3 years ago
Read 2 more answers
Determine whether the solution of -2x = -15 is<br> Greater than or less than -15
brilliants [131]

Positive numbers are always greater than -15. Therefore, it's a greater than.

-2x = - 15

Dividing both sides by -2, we get

x = 7.5

Negative cancels on both sides, so we get a positive equation.

Positive numbers are always greater than -15. Therefore, it's a greater than.

What is greater than or less than?

  • Greater than and less than are the comparison symbols.
  • When the number is bigger or smaller than the other, then greater than and less than symbols are used.
  • If the number is greater than the other, the greater than (>) symbol is used.
  • If the number is lesser than the other, the less than the (<) symbol is used.

To learn more about greater than and less than, visit: brainly.com/question/15746367

#SPJ9

5 0
1 year ago
A function is represented by the graph.A function is represented by the graph. Complete the statement by selecting from the drop
8090 [49]

Answer:

= to because the graph has a y int at 1 and so does your formula given (just make x=0 to find it by plugging that in) and that one has a y int at 1 too

Step-by-step explanation:

3 0
3 years ago
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