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PolarNik [594]
3 years ago
12

Write and solve an equation to find the value of the variable 104,137,154,131,x; mean=130

Mathematics
1 answer:
Damm [24]3 years ago
3 0
(104+137+154+131+x) / 5 = 130

The calculation part I would like to leave it for you. It's a good practice.
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stealth61 [152]

Answer:

1st option

Step-by-step explanation:

4 \frac{1}{3} ÷ 2 \frac{3}{5} ( change mixed numbers into improper fractions )

= \frac{13}{3} ÷ \frac{13}{5}

To perform the division

leave 1st fraction, change ÷ to × , turn 2nd fraction ' upside down'

= \frac{13}{3} × \frac{5}{13}

7 0
2 years ago
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PLEASE HELPP
agasfer [191]

Answer:

The solution to the system of equations be:

x=3,\:y=-1

Hece, option B is correct.

Step-by-step explanation:

Given the system of equations

\begin{bmatrix}x-3y=6\\ 2x+2y=4\end{bmatrix}

Multiply x − 3y = 6 by 2:      2x-6y=12

\begin{bmatrix}2x-6y=12\\ 2x+2y=4\end{bmatrix}

so

2x+2y=4

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\underline{2x-6y=12}

8y=-8

so the system of equations becomes

\begin{bmatrix}2x-6y=12\\ 8y=-8\end{bmatrix}

Solve 8y = -8 for y

8y=-8

Divide both sides by 8

\frac{8y}{8}=\frac{-8}{8}

y=-1

\mathrm{For\:}2x-6y=12\mathrm{\:plug\:in\:}y=-1

2x-6\left(-1\right)=12

2x+6=12

subtract 6 from both sides

2x+6-6=12-6

2x=6

Divide both sides by 2

\frac{2x}{2}=\frac{6}{2}

x=3

Therefore, the solution to the system of equations be:

x=3,\:y=-1

Hence, option B is correct.

6 0
3 years ago
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jeka94

Answer:

A) 27

Step-by-step explanation:

\frac{16}{16 + 12}  =  \frac{63 - ?}{63}

➡️ \frac{4}{7}  =  \frac{63-? }{63}

➡️ 63 - ? = 36

➡️ ? = 27

8 0
3 years ago
Factor the trinomial: 2x^2 + 11x + 14
Natalija [7]
It’s (2x + 7) (x +2)
6 0
3 years ago
How many times bigger is 1.8x10^27 than 1x10^25
victus00 [196]
To find the number of times it is bigger

= \dfrac{1.8 \times 10^{27} }{1 \times 10^{25}}

= 1.8 \times 10^{27-25}

= 1.8 \times 10^{2}

= 180 \text { times}
3 0
3 years ago
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