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expeople1 [14]
3 years ago
13

I need help please!!!

Mathematics
1 answer:
shtirl [24]3 years ago
8 0

Answer:i think 39

Step-by-step explanation:

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Write these expressions as simply as possible
harkovskaia [24]
So it is asking you to group like term so
x terms can be grouped/added/subtracted to other x terms, but not to x^2 or x^3 terms
x^2 terms to x^2 and so on so

1.  9-3k+5k=
9+(5k-3k)=
9+2k

2.  k^2+2k+4k=
k^2+(2k+4k)=
k^2+6k=
7 0
3 years ago
Read 2 more answers
A car is 170 inches long. A truck is 75% longer than the car. How long is the truck? *please show an explanation*
Sav [38]

Answer:a

Step-by-step explanation:did

7 0
2 years ago
If x2 + y2 = 38 and x - y = 2, then what is x? If there are two possible answers, then enter the larger of the two.
Ket [755]
If x-y=2 then x=2+y

And if you insert that in the first equation

(2 + y) {}^{2}  + y {}^{2}  = 38
4 + 4y + y {}^{2}  +  {y}^{2}  = 38
2y {}^{2}  + 4y - 34 = 0
y =  - 1 +  \sqrt{17}
Or
y =  - 1 -  \sqrt{17}


The first one is bigger so the answer is

y =  - 1 -  \sqrt{17}
7 0
3 years ago
Read 2 more answers
(5x-4)(x+1) multiply then simplify
viva [34]

Answer:

5x^2+x-4

Step-by-step explanation:

Multiply 5x into (x+1)

to get 5x^2+5x

Multiply -4 into (x+1)

to get -4x-4

Combine like terms

5x^2+5x-4x-4

Answer:

5x^2+x-4

3 0
2 years ago
A factory employs 18 women to sew 540 dresses. The women take 6 weeks to do the job. If 12
damaskus [11]

9514 1404 393

Answer:

  9 weeks

Step-by-step explanation:

In problems of this nature, the usual assumption is that the time required is proportional to the work product and inversely proportional to the number of people doing the job. Here, there is no change in the amount of work, but the number of people is reduced by a factor of 12/18 = 2/3.

So, the amount of time required is expected to increase by a factor of 1/(2/3) = 3/2.

  (6 weeks)×(3/2) = 9 weeks

It would have taken 9 weeks to sew the 540 dresses.

5 0
3 years ago
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