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tamaranim1 [39]
3 years ago
12

N(x)=20-x If n(x)=18, find the value of x

Mathematics
2 answers:
Volgvan3 years ago
4 0

Answer:

x=-2

Step-by-step explanation:

Replace n(x) in the first equation to 18. After you get 18=20-x. You subtract 20 from each side to get -x=2. Since there's still a negative sign on the left side, you divide both sides by negative 1. As a result you get x=-2.

cupoosta [38]3 years ago
3 0

Answer:

x=-2

Step-by-step explanation:

i got it correct on edg 2020

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katen-ka-za [31]

Answer:

14 inches

Step-by-step explanation:

Perimeter of a rectangle

= 2(l + w)

Given length L = 3 inches and

Width w = 4 inches

Perimeter = 2(3 + 4)

Simplify the bracket

2 x 7

14 inches

4 0
4 years ago
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Which point is the reflection of point E across the y-axis ? What’s are it’s coordinates?
andriy [413]

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Step-by-step explanation:

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Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}
&amount&concentration&
\begin{array}{llll}
concentrated\\
amount
\end{array}\\
&-----&-------&-------\\
\textit{first sol'n}&11&x&11x\\
\textit{second sol'n}&4&0.55&2.20\\
------&-----&-------&-------\\
mixture&y&0.77&0.77y
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
11+4=y\implies 15=\boxed{y}\\
11x+2.2=0.77y\\
----------\\
11x+2.2=0.77\cdot \boxed{15}
\end{cases}

solve for "x"
6 0
4 years ago
Consider the triangle.
BigorU [14]

Answer:

It's the second answer down : Angle B, A and C

Step-by-step explanation:

7 0
3 years ago
WOULD THIS BE RIGHTTT PLEASE NO BS
coldgirl [10]

Answer:

no its not right

the line doesn't pass by (2,0) it passes by (2,1)

3 0
3 years ago
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