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fenix001 [56]
3 years ago
11

What is the first step when factoring the trinomial

Mathematics
1 answer:
Charra [1.4K]3 years ago
4 0
I would go with Option B, List the factors of the constant term.

For ax² + bx + c, you would find the factors of A * C that would add up to B. So if term A is a 1, you would just take the factors of term C, the constant.
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If B = A , where on the number line will B appear ?
Wittaler [7]
B is going to be where A is
7 0
3 years ago
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If y varies directly as x, and y is 400 when x is r and y is r when x is 4, what is the numeric constant of variation in this re
Kipish [7]
\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ k}}&\cdot&x
\\
&&  y={{ k }}x
\end{array}\\\\
-----------------------------\\\\


\bf \textit{now, we also know }\qquad 
\begin{cases}
y=400\\
x=r\\
---\\
y=r\\
x=4
\end{cases}\implies 
\begin{cases}
400=kr\\
r=k4\\
----------\\
now\\
400=kr\implies \frac{400}{k}=\boxed{r}\\\\
thus\\\\
r=k4\implies \boxed{\frac{400}{k}}=4k
\end{cases}
\\\\\\
400=4k^2\implies \cfrac{400}{4}=k^2\implies 100=k^2\implies \sqrt{100}=k
\\\\\\
10=k\impliedby \textit{constant of variation}
8 0
3 years ago
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A digital scale reports a 10kg weight as weighing 8.975kg. which of the following is true?
lukranit [14]
That question is accompanied by these answer choices:

<span>A. The scale is accurate but not precise.
B. The scale is precise but not accurate.
C. The scale is neither precise nor accurate.
D. The scale is both accurate and precise.

Then you need to distinguish between accuracy and precision.

Accuracy refers to the closeness of the measure to the real value, while precision, in this case, refers to the level of significant figures that the sacle report.

The fact that the scale reports the number with 4 significant figures means that it is very precise, but the fact that the result is not so close to the real value as the number of significan figures pretend to be, means that the scale is not accurate.

So, the answer is that the scale is precise but not accurate (the option B).
</span>
6 0
3 years ago
Which of the following equations is equivalent to 4[x + 2(3x - 7)] = 22x - 65
Nataly_w [17]

Answer:

See the equation simplified below.

Step-by-step explanation:

The equation simplifies to the following equations:

4[x + 2(3x - 7)] = 22x - 65

4[x+6x-14] = 22x - 65

4x+24x - 56 = 22x - 65

28x - 56 = 22x - 65

6x - 56 = -65

6x = -9

x = -3/2

7 0
4 years ago
Which expression is equivalent to 4(y + 2) ? to
QveST [7]

Answer:

4y+8

Step-by-step explanation:

7 0
3 years ago
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