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9966 [12]
3 years ago
9

Solving Systems by Elimination

Mathematics
1 answer:
Karolina [17]3 years ago
8 0

Answer:

x=-2, y=-3. (-2, -3).

Step-by-step explanation:

-5x+4y=-2

2x-7y=17

-------------------

2(-5x+4y)=2(-2)

5(2x-7y)=5(17)

---------------------

-10x+8y=-4

10x-35y=85

-------------------

-27y=81

y=81/-27

y=-3

2x-7(-3)=17

2x+21=17

2x=17-21

2x=-4

x=-4/2

x=-2

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Please help! Which is the solution set of the following inequality?
Ira Lisetskai [31]

Answer:

x<3

Step-by-step explanation:

3x - 4 < 17 - 4x

So, the -4 shall cross to the other side and replace the -4x which will now take the place of where the -4 used to be and the signs of both digits will change to a positive (+)

Remember the inequality sign (<) shall not change

so now the equation shall appear like this;

3x + 4x < 17 + 4

add both sides and it will appear like this;

7x < 21

simplify both sides by 7 and you'll get

x < 3

5 0
2 years ago
Convert <br><br>a. 10 kg into tonne<br>b. 9.8 kg into gram<br>​
Karo-lina-s [1.5K]

For it’s A= 0.01
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6 0
3 years ago
Advanced question. Who can figure out how you can take an exchange rate which pegs $1.00 US to $1.21 CAD to see how much you wou
xenn [34]

Answer:

$0.83 when solved for (when the actual conversion is done it comes out to be $0.82)

Step-by-step explanation:

We are stating that 1 US = 1.21 CAD

Since they are equal we can assume: \frac{1 US}{1.21 CAD} =1

Assume the number we are looking for is x. x US = 1 CAD.

Since they are equal we can assume: \frac{x US}{1 CAD} =1

Both equations are equal to 1, meaning the equations are equal to each other. So, \frac{1US}{1.21CAD}=1= \frac{xUS}{1 CAD} ⇒⇒⇒⇒ \frac{1US}{1.21CAD}= \frac{xUS}{1 CAD}

Using cross multiplication we get 1US*1CAD=1.21CAD*xUS

We can discard the units (we only needed them to differentiate which currency we were talking about) to get 1 = 1.21x

Solving for x we get x = 1/1.21 = 0.82645

If you wish to round this you would get around 0.83, which is remarkably close to the actual price of 0.82. The reason for difference is in the numbers we use. When we divide 1/1.12131, we get 0.82433, which would round to be 0.82.

Hope this is correct and helps!

5 0
3 years ago
Read 2 more answers
anty and jin form an llc. jin invest 4300 cash, equipment with a market value of 7300, and land with a market value of 46500. pr
lara31 [8.8K]

Based on the information given, the journal entry will be:

Debit Cash $4300

Debit Equipment $7300

Debit Land $46500

Credit Jin equity $58100

(To record Jin's investment in the company).

<h3>What is a journal entry?</h3>

It should be noted that a journal entry simply means the act of making records of transactions.

The transactions are listed in the journal which shows the debit and credit balances of the company.

Learn more about journal entries on:

brainly.com/question/14279491

8 0
2 years ago
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Shalnov [3]

Answer:

164

Step-by-step explanation:

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= -10 + 8i

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5 0
3 years ago
Read 2 more answers
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