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larisa [96]
3 years ago
15

An architect drew plans for an office building.

Mathematics
1 answer:
mel-nik [20]3 years ago
7 0

Answer:

part A: a.

part B: 7200ft

Step-by-step explanation:

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3x+4y=17.50<br> 7x+1y=17.00
nikdorinn [45]
7x+1y = 17.00 can be simplified to  y = -7x +17
<span>-7x +17 can then be substituted  for y in 3x+ 4y =17.50
</span>3x+4(y) = 17.50
3x+ 4(-7x +17) = 17.50

From here you can solve for X
<span>3x + 4(-7x +17) = 17.50
</span>3x -28x + 68     =  17.50
  -25x    + 68     =  17.50
              -68           -68
  -25x                =   -50.50
   ÷-25                     ÷-25
      X                 =   2.02

You can then replace x with 2.02 in the original 7x + 1y = 17.00 to solve for y.

7(x)      + 1y = 17.00
7(2.02) +  y  = 17.00
14.14    +  y =  17.00
-14.14              -14.14
                 y =  2.86

Then substitute 2.02 for x and 2.86 for y in the original 3x+ 4y = 17.50 to check.
3(x)      +   4(y)       =   17.50
3(2.02) +   4(2.86)  =   17.50
6.06      +   11.44    =   17.50
           17.50           =    17.50
So
X = 2.02
and
Y = 2.86
or the solution set is (2.02, 2.86)

Hope this helps
5 0
3 years ago
The cost of 5 cans of dog food is 4.35 . At this price how much do 11 cans of dog food cost?
EastWind [94]

Answer: 9.57

Step-by-step explanation:

I added 4.35 by 4.35 wich would be 10 cans and then I divided 4.35 by 5

7 0
3 years ago
Read 2 more answers
In Ms. Perron’s class, 75% of the students are boys. There are 18 boys in the class. What is the total number of students in Ms.
Lera25 [3.4K]
I want to say the answer is B
3 0
4 years ago
Read 2 more answers
Please help I do not get it
CaHeK987 [17]

Answer:

Top Right is the graph that shows Infinitely many solutions

8 0
3 years ago
Read 2 more answers
Terry planted 12 pepper plants he planted twice as many green pepper plants is red pepper plants how many green pepper plants ar
shutvik [7]
Let x = green pepper plants
2x = red pepper plants

2x + x = 12
3x = 12
x = 12/3
x = 4
8 0
3 years ago
Read 2 more answers
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