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liubo4ka [24]
3 years ago
14

A construction crew has just built a new road. They built 15.36 kilometers of road in 6 weeks. At what rate did they build the r

oad?
Mathematics
2 answers:
swat323 years ago
7 0
Divide total length by time:

15.36 / 6 = 2.56 km per week
Temka [501]3 years ago
5 0
We would do division by the amount they have built by how long it took them to built it.

\boxed{15.36\div6} = 2.56(km) \Leftarrow a \ week

Your answer: \boxed{\boxed{\bf{2.56(km) \Leftarrow (per \ week)}}}
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2x/x-3 - 6/x-3 . I need a step by step explanation , please
Harman [31]
When adding/subtracting fractions you need a common denominator, but you already have one, which is x-3.  So in general:

a/c-b/c=(a-b)/c so you just have:

(2x-6)/(x-3)  now if you factor 2 from the numerator

2(x-3)/(x-3)  the (x-3)s cancel out leaving

2

However!  Note that division by zero is undefined, so x cannot equal 3.  (because both original fractions had denominators of x-3)

What this all means is that that expression will equal 2 for all real values of x other than 3.
8 0
3 years ago
PLEASE HELP ME. I WILL BRAINLIEST
Oliga [24]

Answer:

Step-by-step explanation:

  • vertex=(1/2,-49/4)
  • y intercept=(0,12)
  • x intercept=(4,0)(-3,0)
  • Axis of symmetry=1/2
  • Domain=(-∞,∞){x/x∈R}
  • Range= -49/4,∞){y/y≥ -49/4}
3 0
4 years ago
Six less than two thirds of a number is 18. Find the number
zhenek [66]
(2/3) x -6= 18
2x/3 = 18+6
2x/3 = 24
2x = 24•3
X= 24•3/2
X= 12•3
X= 36
4 0
3 years ago
3x-9x+6=20-3x+4x Please answer.
fomenos
I gotchu.
<span>3x-9x+6=20-3x+4x
Combine like terms.
-6x+6=20+x
Bring x over to the left side.
-x            -x
-7x+6=20
bring 6 to the right side.
     -6   -6
-7x=14
Divide -7 on both sides to isolate x.
x= -2

CHECK
</span><span>3x-9x+6=20-3x+4x
-6(-2)+6=20+(-2)
18=18 
ANSWER: x= -2</span>
6 0
3 years ago
Kelly sells magazine subscriptions after work. The half-year subscriptions cost $12, and the full-year subscriptions cost $20. T
attashe74 [19]
She would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

I hope this answer helped you! If you have any further questions or concerns, feel free to ask! :)

(Below is a picture to help you understand how to add files.)

7 0
3 years ago
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