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qaws [65]
3 years ago
9

Solve the equation there’s no solution right no solution J/5+1=-4

Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0
Hmmmm, there is     \bf \cfrac{j}{5}+1=4\implies \cfrac{j}{5}=3\implies j=15
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Train A and train B leave a central station at the same time. They travel the same speed, but in opposite directions, with train
ratelena [41]
Recall your d  = rt, distance = rate * time

so, keeping in mind that both trains are going at the same speed, say speed of "r" mph, after 212 hours A arrived at station A and after 4 hours, B arrived at station B.

now, the distance covered by train A is say "d", we know both stations are 585 miles apart, so, if train A covered "d" miles in those 212 hours, then train B covered the slack from 585 and d, that is "585 - d".

\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
\textit{Train A}&d&r&212\\
\textit{Train B}&585 - d&r&4
\end{array}
\\\\\\
\begin{cases}
\boxed{d}=212r\\
585-d=4r\\
----------\\
585-\boxed{212r}=4r
\end{cases}
\\\\\\
585=216r\implies \cfrac{585}{216}=r\implies \cfrac{65}{24}=r\implies \stackrel{mph}{2\frac{17}{24}}=r
8 0
2 years ago
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A tower casts a shadow that is 60 feet long when the angle of elevation of the sun is 65˚. how tall is the tower?
levacccp [35]

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3 years ago
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Write an equation for the description.
yaroslaw [1]

Answer:

The equation for the description is: \mathbf{123=2(2x+x)\:or\:123=6x}

Step-by-step explanation:

We need to write an equation for the description.

The length of a rectangle is twice its width. The perimeter of the rectangle is 123 feet.

Let Width of rectangle = x

Length of rectangle = 2x (twice its width means, multiplying 2 with width)

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The formula used is: Perimeter\:of\:rectangle=2(Length\times Width)

Putting values and finding equation:

Perimeter\:of\:rectangle=2(Length+ Width)\\123=2(2x+x)

So, the equation for the description is: \mathbf{123=2(2x+x)}

You can simplify the equation as:

123=2(2x+x)\\123=2(3x)\\123=6x

Both equations can be used: \mathbf{123=2(2x+x)\:or\:123=6x}

7 0
3 years ago
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andrey2020 [161]

Answer:

d 6/7

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