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choli [55]
3 years ago
9

Help me I beg you

Mathematics
1 answer:
olasank [31]3 years ago
7 0

Answer:

32

Step-by-step explanation:

ratio of areas equal the ratio of corresponding sides squared (*)

ratio of corresponding sides of triangle ABC and triangle ADE = 4/1

area of triangle ADE will equal x, so then the area of triangle ABC will be x + 30 (bc the area of ADEC is 30, you just add that to x to get the area of ABC)

now let's set up our proportion:

Area  of triangle ABC           4^2

--------------------------------- =  ----------     <---- 4/1 is squared because of (*)

Area of triangle ADE             1^2

substitute:

A + 30           16

----------   =   ----------

A                      1

cross multiple to get A = 2, so then ABC = ADE + ADEC, which is 30 + 2 = 32

i did draw a diagram but after reviewing i drew it wrong so good luck drawing the diagram

also is this your 8th grade honors geometry math hw for RSM? HW 23 or something. if yes then oof.

comment if u have questions

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The number of chicken dish is 131 dishes while the number of lobster dishes is 119 dishes

<h3>How to find the number of each type of dish.</h3>

Let

  • x = number of chicken dish and
  • y = number of lobster dish
<h3>How to determine the equations for the linear system</h3>

Since it cost $40 per dish for chicken dish, the total cost of chicken dish is 40x.

Also, since it cost $70 per dish for lobster dish, the total cost of lobster dish is 70y

So, the total cost of dish is T = 40x + 70y

Also, we know that the total cost of dish is $13,570.

So, 40x + 70y = 13570  (1)

Also, there are going to be 250 guest at the dinner and thus 250 dishes.

So, the total number of dishes is x + y = 250

So, x + y = 250 (2)

So, the equations of the linear system are

40x + 70y = 13570  (1)

x + y = 250 (2)

<h3>How to determine the solution for the linear system</h3>

Since

40x + 70y = 13570  (1)

x + y = 250 (2)

From (2), x = 250 - y

Substituting x into (1), we have

40x + 70y = 13570  (1)

40(250 - y) + 70y = 13570  (1)

10000 - 40y + 70y = 13570  

30y = 13570 - 10000

30y = 3570

y = 3570/30

y = 119

Substituting y = 119 into x, we have

x = 250 - y

x = 250 - 119

x = 131

Therefore, the number of chicken dish is 131 dishes while the number of lobster dishes is 119 dishes

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