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Sidana [21]
3 years ago
5

The expression 8x +12y represents the sum of Harry and Mike's total monthly wages, where x represents the number

Mathematics
2 answers:
Schach [20]3 years ago
3 0

Def the second one because think about it this way 1.5 x 8 = 12

There's your answer

White raven [17]3 years ago
3 0

Answer:

b

Step-by-step explanation:because i searched it up

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I think it b t up Orlando
7 0
2 years ago
Find an n^th degree polynomial with real coefficients satisfying the given conditions. n = 3; -2 and 2 i are zeros; f(-1) = 15.
Ira Lisetskai [31]
So, n = 3, is a 3rd degree polynomial, roots are -2 and 2i

well 2i is a complex root, or imaginary, and complex root never come all by their lonesome, their sister is always with them, the conjugate, so if 0+2i is there, 0-2i is there too

so, the roots are -2, 2i, -2i

now... \bf \begin{cases}
x=-2\implies x+2=0\implies &(x+2)=0\\
x=2i\implies x-2i=0\implies &(x-2i)=0\\
x=-2i\implies x+2i=0\implies &(x+2i)=0
\end{cases}
\\\\\\
(x+2)\underline{(x-2i)(x+2i)}=0\\\\
-----------------------------\\\\
\textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
(x+2)[x^2-(2i)^2]=0\implies (x+2)[x^2-(2^2i^2)]=0
\\\\\\
(x+2)[x^2-(4\cdot -1)]=0\implies (x+2)(x^2+4)=0
\\\\\\
x^3+2x^2+4x+8=0

now, if we check f(-1), we end up with 5, not 15
hmmm

so, how to turn our 5 to 15? well, 3*5, thus

\bf 3(x^3+2x^2+4x+8)=f(x)\implies 3(5)=f(-1)\implies 15=f(-1)

usually, when we get the roots, or zeros, if any common factor that is a constant is about, they get in a division with 0 and get tossed, and aren't part of the roots, thus, we can simply add one, in this case, the common factor of 3, to make the 5 turn to 15
6 0
3 years ago
Jace is making a water play table from a triangular table top. He sketched a dotted line to show where he wants to add a circula
Svet_ta [14]

Answer:

B-He should bisect each of the angles at the vertices of the triangular table top.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Can someone solve these, please?
Bumek [7]

Answer:

min is 3  max is 16  q1 is 7

median is 12

q3 is 13

Step-by-step explanation:

4 0
3 years ago
1. Find the cost of 3.5 yards of fabric if the fabric is priced at $6.00 per yard.
Feliz [49]

$21.00

Step-by-step explanation:

if 1 yard equal 6 dollars

do 6 times 3 = 18

and half of 6 is 3

add 18+3=21 dollars

8 0
3 years ago
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