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34kurt
3 years ago
8

Help plz what is the answer

Mathematics
1 answer:
SpyIntel [72]3 years ago
3 0

Answer:

x=50

Step-by-step explanation:

\frac{x}{5}+15=25\\ \frac{x}{5}+15 -15 =25 - 15 \leftarrow\text { Use the Subtraction Property of Equality}\\

\frac{x}{5}=10\\\\\frac{x}{5}*\frac{5}{x} =10*5\leftarrow \text { Multiplication Property of Equality}  \\\\\boxed{x=50}

<h3>Checking by Substitution:</h3>

\frac{50}{5} +15=25\\\rightarrow 50/5=10\\10+15=25\\\boxed {25=25}

'x = 50' is correct.

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Answer:

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Step-by-step explanation:

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6 0
3 years ago
2x+3y=1 and y=-2 - 9 solve using linear combination method. Please explain steps.
kaheart [24]

Answer:

x=17

Step-by-step explanation:

2x+3y=1

y=-2-9

  • In order to combine these two equations, an idea you need to keep in mind is finding a way of setting these equations as equal to each other. I saw that each equation shared a common value, y. In this case, we need to isolate y in the first equation so that both equations =y.

2x+3y=1

3y=-2x+1

\frac{3y}{3}=\frac{-2x+1}{3}

y=-\frac{2}{3}x+\frac{1}{3}

  • With this, we now know that both -2-9 and -\frac{2}{3}x+\frac{1}{3} are equal to y, so we can set them equal to each other.

y=-\frac{2}{3}x+\frac{1}{3}

y=-11

-\frac{2}{3}x+\frac{1}{3}=-11

  • Reply to this if anything I'm saying or doing is confusing in any way, or if you find a mistake. :) Solve for x.

-\frac{2}{3}x+\frac{1}{3}=-11

-\frac{2}{3}x=-11-\frac{1}{3}

-\frac{2}{3}x =-\frac{33}{3}-\frac{1}{3}

-\frac{2}{3}x =-\frac{34}{3}

-\frac{2}{3}x(-\frac{3}{2})=-\frac{34}{3}(-\frac{3}{2})

x=\frac{102}{6}=17

x=17

  • Hopefully this answer is correct AND makes sense in terms of how I achieved it. Again, reply to this with any questions or mistakes I made and I'll do my best to answer or fix them.

 

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3 years ago
Find the next three terms in the geometric sequence: 400, 200, 100, 50
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It's dividing by 2. 

Next 3 would be: 25, 25/2, 25/4 or converting those into decimals. 
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4 years ago
Read 2 more answers
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