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Rama09 [41]
3 years ago
6

A(n)___ is a letter used as a placeholder for an unknown value.

Mathematics
2 answers:
scoundrel [369]3 years ago
5 0
Variable
variables are any letters you use, such as in 3x, x is your variable. It holds an unknown value
GalinKa [24]3 years ago
3 0
The answer is a variable! An example of a variable is:
5x +5 =35
X= 6
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Someone help please ASAP.<br><br> In∆ABC, m<br> a) How are the measures of m<br> b) Solve for x:
miskamm [114]
3x+9+8x+11+5x-8=180\\&#10;16x=168\\&#10;x=10.5\\\\&#10;m\angle BAC=3\cdot10.5+9=40.5\\&#10;m\angle ABC=8\cdot10.5+11=95\\&#10;m\angle BCA=5\cdot10.5-8=44.5\\\\&#10;
4 0
3 years ago
Perform the indicated operation.(3/a+2) + (4/a-5)
kipiarov [429]

Answer:

\frac{7(a-1)}{(a+2)(a-5)}

Step-by-step explanation:

To solve this operation we need to find the common multiple of both denominators and solve for a.

\frac{3}{a+2} + \frac{4}{a-5} =\frac{3(a-5)+4(a+2)}{(a+2)(a-5)} =\frac{3a-15+4a+8}{(a+2)(a-5)} =\frac{7a-7}{(a+2)(a-5)} =\frac{7(a-1)}{(a+2)(a-5)}

Thus, the solution is 7(a -1) / (a+2)(a-5)

8 0
3 years ago
5 ÷ 3/5 =?<br><br>A ?<br><br>B ?<br><br>C?<br><br>Or D?​
Tanya [424]

Answer:

D

Step-by-step explanation:

I can’t give a step-by-step explanation but it’s D

5 0
3 years ago
Read 2 more answers
What is the smallest number of degrees needed to rotate a regular pentagon around it's center onto itself ?
Leviafan [203]
The smallest degree that you can rotate a pentagon is 36 degrees
6 0
3 years ago
Three times x less than y is five times y plus two times x in a verbal sentence please help
tankabanditka [31]
SOLUTION:

As an equation it is:

y - 3x = 5y + 2x

If you are asking for it as a sentence ( I will do it as a written sentence as I unfortunately can't show you the sentence verbally as you had asked ), then it is as you had written in your question so:

Three times x less than y is five times y plus two times x

Or you could write is as:

y subtracted by three times x is equivalent to the sum of five times y and two times x.

Essentially, even with the small alterations that you can make to the phrasing and sentence structure, the concepts are the same so you can use one of the above answers or alter it as you please.

Hope this helps! :)
6 0
3 years ago
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