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2 years ago

7 - (2x + 1) + 4x please show solving steps as well

Mathematics

1 answer:

xeze [42]2 years ago

7 0

Answer:

$2x + 6$

Step-by-step explanation:

$7 - (2x + 1) + 4x$

Distribute the negative inside 2x+1

$7 - 2x - 1 + 4x$

Remind that negative multiply negative must equal positive.

variables cannot sum/add/subtract with constants.

They must be the same terms.

$4x - 2x - 1 + 7 \\ 2x + 6$

Therefore, our answer is 2x+6

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Answer:The slope is 1

Step-by-step explanation:

y2-y1=-3

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2 years ago

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atroni [7]

Answer:

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Step-by-step explanation:

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2 years ago

The second term in a geometric sequence is 20. The fourth term in the same sequence is 45/4 or 11.25. What is the common ratio i

kati45 [8]

$\bf \begin{array}{ccll}
n&term&value\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
2&a_2&20\\
3&a_3&20r\\
4&a_4&20rr\\
&&20r^2\\\\
&&\frac{45}{4}
\end{array}\implies \stackrel{4^{th}~term}{20r^2=\cfrac{45}{4}}\implies r^2=\cfrac{45}{80}
\\\\\\
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3 years ago

An example that describes a situation which could be modelled by the equation M = 50 + 6d

Allisa [31]

Answer:

Cost of staying hotel with fixed charge of 50 and $6 for each day stay

where d is number of days of stay

M is total money charged by hotel.

Step-by-step explanation:

We have to describe a situation to fit into the given model.

model is M = 50 + 6d

it consist of two part

constant part 50

and variable part 6d which depends on value of d,

Let take M as money

d as days

in hotel, hotel service charge is fixed at 50

and for each day stay 6$ is charged.

Thus,

total money charged by hotel will be equal to sum of

fixed part 50

$6d for staying d days in the hotel

which can be modeled by given equation

M = 50 + 6d

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2 years ago

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iris [78.8K]

Answer:

Step-by-step explanation:

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2 years ago