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strojnjashka [21]
4 years ago
9

Solve 8x+7y=5; 4x-9y=65 using matrices Im soo bad at this stuff haha

Mathematics
1 answer:
zmey [24]4 years ago
8 0
I hope I did not make any mistake but this is a god procedure to solve it, reduce ur matrice to row echelon and you can easily get ur answer I did not have pen ans paper with me so i just try to do it briefly on paint, regards.
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What is the formula to find the volume of the solid ?
marysya [2.9K]

Answer:

V = l x w x h

Step-by-step explanation:

4 0
3 years ago
Adventure Play sells an mp3 player for $18.00 and charges $3.25 per song. King Music sells a player for $23.00 and charges $2.00
Afina-wow [57]
<span>Answer: 4

Explanation:

Translate the english language to mathematical (algebraic) language.

This implies to define the variables and translates the statements into equations.

1) Adventure Play sells an mp3 player for $18.00 and charges $3.25 per song.

Cost = price of the mp3 player + price each song * number of songs

Variables:

number of songs: n
price each son: $3.25
price of the mp3 player: $ 18.00
Cost: c(n), this means that the cost is a function of n.

c(n) = 18 + 3.25n

2) King Music sells a player for $23.00 and charges $2.00 per song. For how many songs will the cost be the same?

Using the same procedure used for Adventure Play case:

c(n) = 23 + 2n

3) Equal cost =>

18 + 3.25n = 23 + 2n

=> 3.25n - 2n = 23 - 18
=> 1.25n = 5
=> n = 5 / 1.25
=> n = 4

Answer: the cost will be the same for 4 songs.
</span>
4 0
3 years ago
la un magazin s-au adus 80 dal. (decilitri) de otet. in prima saptamana s-a vandut o cincime din cantitate, in a doua saptamana
lesantik [10]
Translation please!

Hope this helps!
Maybe you could get a translation app.
5 0
3 years ago
If when simplified results to a unit fraction and
tangare [24]

Answer:

a ≤ 39 ≠ 1

Step-by-step explanation:

3 0
2 years ago
F(x) = 5x - 2 g(x) = 2x^2−x What is f^−1(x)?
Arlecino [84]

Answer:

Set up the composite result function.

g(f (x))

Evaluate:

g (f (x))

by substituting in the value of f into g .

g (5x −2) = 2 (5x −2)+

Simplify each term.

Apply the distibutive property: (A b + c) = ab + ac)

g(5x−2)= 10x−4+1

Add − 4  and 1.

so, g(5x−2)=10x −3

<h2>please brailiest! </h2>

4 0
3 years ago
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