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Olenka [21]
3 years ago
10

If you were to solve the following systems of equations by using a matrix, which of the following would be your coefficient matr

ix? 5x-y=18 3x+8y=15 (picture as everything in it for better understanding)
A.[5 3,-1 8]
B.[5 -1,3 8]
C.[5 18,3 15]
D.[5 -1 18,3 8 15]

Mathematics
2 answers:
sesenic [268]3 years ago
6 0

the answer on apex is A


DedPeter [7]3 years ago
4 0
C is the only answer




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Answer:

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Step-by-step explanation:

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   = (6-4)/(41-46)

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3 years ago
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Find an explicit rule for the nth term of the sequence.The second and fifth terms of a geometric sequence are 18 and 144, respec
vova2212 [387]

Given:

second term = 18

fifth term = 144

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\begin{gathered} a_n\text{ = ar}^{n-1} \\ Where\text{ a is the first term} \\ r\text{ is the common ratio} \end{gathered}

Hence, we have:

\begin{gathered} \text{ar}^{2-1}\text{ = 18} \\ ar\text{ = 18} \\  \\ ar^{5-1}=\text{ 144} \\ ar^4\text{ =144} \end{gathered}

Divide the expression for the fifth term by the expression for the second term:

\begin{gathered} \frac{ar^4}{ar}\text{ = }\frac{144}{18} \\ r^3\text{ = }\frac{144}{18} \\ r\text{ = 2} \end{gathered}

Substituting the value of r into any of the expression:

\begin{gathered} ar\text{ =  18} \\ a\text{ }\times\text{ 2 =  18} \\ Divide\text{ both sides by 2} \\ \frac{2a}{2}\text{ =}\frac{18}{2} \\ a\text{ = 9} \end{gathered}

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5 0
1 year ago
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attashe74 [19]
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so the answer is 3/20 of a pizza
 hope this helped and plz leave a thank you

3 0
3 years ago
what geometric shape may describe a quadrilateral that has two sides with length 8 cm and two sides with length 5 cm
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