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disa [49]
3 years ago
13

What is nine less than a number?

Mathematics
2 answers:
guapka [62]3 years ago
6 0
9 less than a number is <em><u>9 - n</u></em>

Where n is that number
Marizza181 [45]3 years ago
4 0
It says less than so you want to subtract. 
an number with be represented by the variable n:
n-9
it isn't 9 minus n because that would be nine less a number(9-n)
so your answer is:
<span>n-9</span>
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Kent can cut and split a cord of wood twice as fast as Brent can. When they work together , it takes them 4hr. How long would it
Alisiya [41]

Answer:

Brent will take 12 hours to do the work alone

Kent will take 6 hours to do the work alone

Step-by-step explanation:

We can use the formula

W = RT

to solve this.

W is Work Done

R is the Rate at which it is done

T is the Time taken

Now, let Brent's rate be x

and since Kent can to it TWICE as fast, we can say Kent's rate is 2x

Now, to cut and split a cord (let that be "1" unit of work, W = 1 ), together they take 4 hours. So we can write:

W = RT

1 = (x + 2x)(4)

Now, we solve this for x:

1=(x+2x)(4)\\1=(3x)(4)\\1=12x\\x=\frac{1}{12}

This means that 1/12th of work is done in 1 hour, so it will take him "12" hours to do full work alone.

This is Brent.

Kent is TWICE as fast, so he will take HALF THE TIME, that is 6 hours to do the work alone.

Brent will take 12 hours to do the work alone

Kent will take 6 hours to do the work alone

4 0
3 years ago
3x-5y=-6<br> -9x-5y=18<br> whats the answer
Firlakuza [10]
\left \{ {{3x-5y=-6\ \ | *3} \atop {-9x-5y=18}} \right. \\\\  \left \{ {{9x-15y=-18} \atop {-9x-5y=18}} \right. \\+----\\add\ both\ equations\\\\&#10;-20y=0\ \ \ | divide\ by \ -20\\\\&#10;y=0\\\\&#10;3x-5y=-6\ \ \ \ add\ 5y\\\\&#10;3x=-6+5y\ \ \ | divide\ by\ 3\\\\&#10;x=\frac{-6+5y}{3}=\frac{-6+0}{3}=-2\\\\ x=-2\\ y=0
4 0
2 years ago
Read 2 more answers
Hi please help me i will mark as brainiest just please help!
snow_lady [41]

Answer:

B

Step-by-step explanation:

Kahlil wants it to be more than 10 seconds long, and his friend wants it 5 seconds longer than that. So it has to be at least 10 + 5 seconds long or 15 seconds. B is the only option with >15, and all the possible track lengths below satisfy the inequality.

4 0
2 years ago
A taxi driver makes $24.50 in an hour, but uses $6.75 worth of gas during that time. What will the driver's total earnings for t
Tpy6a [65]
He would have earned 17.75

Just subtract 6.75 from 24.50

24.50-6.75=17.75
3 0
3 years ago
Statistics honors - Independent events means disjoint events. True or False?
dimulka [17.4K]
Answer:

False

Explanation:

Because to events are disjoint if they have no outcomes in common. In other words the events are disjoined if knowing that one of the events occurs we know the other event not occur.
8 0
1 year ago
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