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mel-nik [20]
4 years ago
13

1. Refer to Expression 1 and Expression 2.

Mathematics
1 answer:
Natalka [10]4 years ago
3 0
You do parenthesies
exponents
multiply
divide
add
subtract
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(answer with "sometimes, always, or never true")<br> An integer is a whole number.
Pani-rosa [81]

Answer:

An integer is always a whole number

Step-by-step explanation:

5 0
3 years ago
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The trace of an n×n matrix A, denoted tr(A), is thesum of its diagonal entries; that is,tr(A) = a11 + a22 +· · ·+annShow that(a)
Ulleksa [173]

Answer:

Step-by-step explanation:

for two matrices A, B to be Similar, then A = SBS⁻¹

A=SBS−1⟹trace(A)=trace((SB)(S−1))=trace((S−1)(SB))=trace((SS−1)B)=trace(B)

4 0
3 years ago
If f(x)=8-10x and g(x)=5x+4 what is the value of (fg)(-2)?
Shalnov [3]
First, calculate f(g(x))==> you plug (5x+4) in the value of x in f(x)

==>f(g(x))= 8-[10(5x+4)===>8-50x-40===>f(g(x))= -50x  + 32

& f(g(-2))= -100+32 =68.

There is a mistake in your answers, it should be 68 & not 78
6 0
3 years ago
(02.04 MC)
Ainat [17]

(\stackrel{x_1}{3}~,~\stackrel{y_1}{6})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{18}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{18}-\stackrel{y1}{6}}}{\underset{run} {\underset{x_2}{5}-\underset{x_1}{3}}} \implies \cfrac{ 12 }{ 2 } \implies 6

\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{6}=\stackrel{m}{ 6}(x-\stackrel{x_1}{3}) \\\\\\ y-6=6x-18\implies {\Large \begin{array}{llll} y=6x-12 \end{array}}

6 0
1 year ago
Which conic section does this equation represent?
nadya68 [22]

Answer:

Hyperbola

Step-by-step explanation:

x^2-4x-y^2+6y-9=5

Lets write variables in square form using completing the square method

LEts group x  and y terms

(x^2-4x)+(-y^2+6y)-9=5

y^2 terms should be positive always, so we pull out negative sign from y^2

(x^2-4x)-(y^2-6y)-9=5

We have negative sign in the middle. so we will get equation in the form of

\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} =1

If we have negative sign in the middle then it is an hyperbola

8 0
3 years ago
Read 2 more answers
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