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Karo-lina-s [1.5K]
3 years ago
14

At the end of a construction​ project, the project manager is totaling up the cost of building materials used on the job. He arr

ives at the following​ costs: ​Lumber: $15,432 ​Piping: $4,522 ​Concrete: $3,445 ​Drywall: $6,489 ​Paint: $882 How much was spent for materials on this​ project?
Mathematics
1 answer:
serg [7]3 years ago
8 0

Answer:

$30,770

Step-by-step explanation:

Add all of the numbers together to find out cost for materials.

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at maximum speed, an airplane travels 1720 miles against th wind in 5 hours. Flying with the wind, the plane can travel the same
iragen [17]

Answer:

x = 387

Step-by-step explanation:

The wind acts in the opposite direction to the plane when the time is longer.

The wind acts in the same direction as the plane when the time is shorter.

Equation

d = r*t

Givens

  • d = 1720
  • x = plane's speed
  • y = wind speed
  • t1 = 5 hours
  • t2 = 4 hours.

Substitution

  • d = (x + y) * t
  • 1720 = (x + y) * 4
  • 1720 = (x - y) * 5

Since the two distances are the same, you can equate the right hand sides.

  • (x + y) * 4 = (x - y)*5              Remove the brackets.
  • 4x + 4y = 5x - 5y                  Add 5y to both sides
  • 4x + 4y + 5y = 5x - 5y + 5y  Combine all the terms.
  • 4x + 9y = 5x                          Subtract 4x from both sides
  • 9y + 4x - 4x = 5x - 4x           Combine
  • 9y = x

Now use one of the given equations with the distance

  • 1720 = (x + y)*4           Substitute 9y for x
  • 1720 = (9y + y) *  4      Combine
  • 1720 = 10y * 4             Multiply the right
  • 1720 = 40y                  Divide by 40
  • 1720/40 = 40y/40      Do the division
  • 43 = y                          y = wind speek
  • 9y = x                          x = 9*y  
  • 9*43 = x
  • x = 387 miles per hour.
4 0
4 years ago
What is the coefficient of q<br> (2/3q-3/4) and -1/6q-r)
kirza4 [7]
The coefficient in (2/3q-3/4) is 2/3 and in (-1/6q-r) is -1/6
4 0
3 years ago
374x+3=2995 ME GIVE BRAIN I MUST DO MY HOMEWORK you lifesaver...
Kaylis [27]

Hi there!

x=8

<u><em>1.Subtract the answer with the 3 / subtract the terms:</em></u>

<u><em /></u>2995-3=2992<u><em /></u>

<u><em>2.Divide the two terms:</em></u>

<u><em /></u>2992*374=x<u><em /></u>

Therefore, x=8

<u><em /></u>

3 0
3 years ago
What is 2+2-3+9-5+3=
andreev551 [17]

Answer:

8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Can you please help me....Thank you!
PIT_PIT [208]

Answer:

#1

mean=7

median=8

range=9

mode=3

#2

mean=15

mode=17

range=14

median=14

#3

mean=11

mode=none

range=10

median=4.5

#4

mean=6

mode=4

range=13

median=4

Step-by-step explanation:

there you go, I think that's right but it's been awhile since I've had to do mode mean median and range

4 0
2 years ago
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