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gulaghasi [49]
3 years ago
10

And

Mathematics
1 answer:
mojhsa [17]3 years ago
7 0

Answer:

x = -1 , y = 2 thus the answer is B

Step-by-step explanation:

Solve the following system:

{2 y - 5 x = 9 | (equation 1)

{3 x + 5 y = 7 | (equation 2)

Add 3/5 × (equation 1) to equation 2:

{-(5 x) + 2 y = 9 | (equation 1)

{0 x+(31 y)/5 = 62/5 | (equation 2)

Multiply equation 2 by 5/31:

{-(5 x) + 2 y = 9 | (equation 1)

{0 x+y = 2 | (equation 2)

Subtract 2 × (equation 2) from equation 1:

{-(5 x)+0 y = 5 | (equation 1)

{0 x+y = 2 | (equation 2)

Divide equation 1 by -5:

{x+0 y = -1 | (equation 1)

{0 x+y = 2 | (equation 2)

Collect results:

Answer:  {x = -1 , y = 2

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Flura [38]

Answer:

1st- what scenario are talking about?

2nd- false, becuase if you hide under any objects there is the risk of it falling over you and hurting you

7 0
3 years ago
What is the first step in evaluating the expression shown below?
zysi [14]

Answer:

the answer is A

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5 0
3 years ago
Read 2 more answers
Kam can make 72 cookies in 3 hours at his house, while Madison can make 120 cookies in 4 hours at her house. How long would it t
DIA [1.3K]

Answer:

The answer to your question is: 3.7 hours

Step-by-step explanation:

Kam can make 72 cookies/ 3 hours

Madison can make 120 cookies/4 hours

Time to make 200 cookies together = ?

First, calculate the number of cookies make per hour

Kam            72 ---------------- 3

                   x   ----------------  1 hour

  x = 72/3 = 24 cookies/h

Madison

             120 -------------   4 hours

               x ---------------      1 hour

x = 120 / 4 = 30 cookies

Now we write and equation where "t" will be time

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5 0
3 years ago
Select all answers that have a value of 22?? Help..
Tom [10]

Let's plug in the variables one by one.

6g - 2h

plug in 5 for g and 4 for h

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multiply

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subtract

→ 22

20g

plug in 2 for g

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multiply

40

2(g + 1)

plug in 10 for g

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add

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multiply

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plug in 1 for g and 4 for h

4(1) + 5(4)

multiply

4 + 20

add

24

Therefore, the answers that have a value of 22 are 6g - 2h and 2(g + 1)

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Answer:

thankyou for points

Step-by-step explanation:

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