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Bond [772]
4 years ago
10

Is -1 a solution to 12=14-2f?

Mathematics
1 answer:
evablogger [386]4 years ago
8 0
The solution for the first one is 1
The solution for the second one is (2,-6)
I'm not really sure about the third one.
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9. A dust mite is about 250 microns long. One micron equals 0.001 millimeter. How long is a
lora16 [44]

Answer:

0.250

Step-by-step explanation:

0.001x250=0.250

6 0
3 years ago
How do you simplify algebraic expressions?  
masya89 [10]
There are many reasons one may want to simplify, rearranging to find specific values - or maybe just making it simpler
Well, let's do some examples:
y(x(3+2)) +2 = -2y +2   <span>< I just made this one up, it looks really complicated right now, none the less it can be simplified easily
</span>y(3x+2x) + 2 = - 2y +2
3xy + 2xy + 2 = -2y +2
5xy + 2 = -2y +2    <-- the +2's dissapear because they cancel out
5xy = -2y

<span>And there we have it, that long expression has been simplified to something really simple.
</span>
Another example:
3(4(x+3(2 +z)) - 5)= 3y <span><- you can start where ever, I like starting in the middle
</span>3  *  (4 *  (x +  3*(2 + z)) -  5 ) = 3y  <span><-  here it is spaced out, we get a much better view
</span><span>3  *  (4 *  (x +  6 + 3z) -  5 ) = 3y</span>
3  * (4x + 24 + 12z - 5) = 3y <- divide both sides by 3 ..
4x + 24 + 12z - 5 = y <- much better
<span>
</span>Note: Simplify means solving to a degree, but you can't solve it because it has unknowns
7 0
3 years ago
Can any help me on this
julia-pushkina [17]

A writer because all other jobs are taken up. Pamela is dentist. Alice is lawyer, robert is tacher and bart is a writer

5 0
3 years ago
Negative six multiplied by negative ten is subtracted from eight multiplied by five. Find the number
My name is Ann [436]

Answer:

The answer is -20.

Step-by-step explanation:

(8 × 5) - (-6 × -10)

= 40 - 60

= -20

7 0
3 years ago
Read 2 more answers
The sum of four numbers is 20 and their average is 5. When a fifth is added, the new average is 6. What is the fifth number?
ipn [44]

Answer:

10

Step-by-step explanation:

We'll note the numbers as x_{n}, x_{n+1} ...

x_1 + x_2 + x_3 + x_4 = 20\\Avg = 5\\\frac{x_1 + x_2 + x_3 + x_4 + x_5 }{5} = 6 = \frac{20 + x_5}{5}\\ 4 + \frac{x_5}{5} = 6\\\\frac{x_5}{5} = 2\\\x_5 = 10

8 0
3 years ago
Read 2 more answers
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