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Savatey [412]
2 years ago
5

What is the sum of x-2 and 3x+8

Mathematics
2 answers:
True [87]2 years ago
7 0

Answer: The sum of x-z and 3x+8 is equal to 6x^2-6x-6 .

kirill [66]2 years ago
3 0

Answer:

\huge\boxed{\sf 4x + 6}

Step-by-step explanation:

Adding x - 2 and 3x + 8

= x - 2 + 3x + 8

Combine like terms

= x + 3x - 2 + 8

= 4x + 6

\rule[225]{225}{2}

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Marcus borrowed 9000 from his bank to buy a car. The bank charged him a simple interest rate of 1.25%. By the time he paid back
snow_lady [41]

Answer:

2.5 years

Step-by-step explanation:

Given data

P=9000

r= 1.25%

A= 9281.25

The simple interest expression is given as

A=P(1+rt)

substitute

9281.25= 9000(1+0.0125*t)

9281.25=9000+112.5t

collect like terms

9281.25-9000=112.5t

281.25= 112.5t

t= 281.25/112.5

t= 2.5

Hence the time is 2.5 years

7 0
2 years ago
two trains leave the station at the same time one heading west and the other East the westbound train travels at 55 miles per ho
Diano4ka-milaya [45]
Recall your d = rt, distance = rate * time

so... one train goes west and the goes the opposite way... alrite... so... notice, by the time 338 miles have been covered by both, it will have been "t" hours, and whatever "t" is, is the same amount of time the westbound train has been running as well as the eastbound train has been running.

now, let's say, since by "t" hours they've covered 338 altogether, so, if the westbound train has covered say "d" miles, then the eastbound train would have covered the slack from 338 and d, that is, "338 - d".

\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
Westbound&d&55&t\\
Eastbound&338-d&75&t
\end{array}
\\\\\\
\begin{cases}
\boxed{d}=55t\\
338-d=75t\\
----------\\
338-\boxed{55t}=75t
\end{cases}
\\\\\\
338=75t+55t\implies 338=130t\implies \cfrac{338}{130}=t\implies \stackrel{hours}{2.6}=t

so, 2hours and 36 minutes.
8 0
3 years ago
The rule for calculating the mean is to add up all the scores in a sample and divide by the _________
Tems11 [23]
Amount of numbers in the sample.
8 0
3 years ago
Need by tomorrow please help
nikklg [1K]
1    - 9
2   -28 
3    54
4    -100
5   -60
6     0
7   49
8   -135
9    -96
10   300
11    0
12    192
6 0
3 years ago
Read 2 more answers
Which institution informs individuals and businesses about their rights and responsibilities?
Mama L [17]

Answer:

A. The Federal Trade Commission

Step-by-step explanation:

The FTC inaugurated its doors in March 1915. The FTC's purpose is to protect consumers and encourage contestants. The FTC cannot solve individual grievances, but it can present knowledge about what steps to exercise. The FTC states that accusations can improve it and its law implementation partners identify patterns of fraud and exploitation, which may direct to examinations and preventing unfair marketing practices.

4 0
2 years ago
Read 2 more answers
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