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sergeinik [125]
3 years ago
9

Can someone plz help :( I need help asap

Mathematics
2 answers:
erastovalidia [21]3 years ago
8 0

Answer:

x=120, y=160. and is that u in ur pfp

Step-by-step explanation:

sleet_krkn [62]3 years ago
5 0

Answer:

x = 120, y = 160

Step-by-step explanation:

I like to use the elimination strategy in this type of problem.

You need to get one of the terms on the right side of the equation equal to and opposite another term on the right side of the other equation. For example, I'm going to make the y term of the first equation equal and opposite the y term of the second equation by multiplying the entire first equation by -1.5.

-1.5 * (x + y) = (280) * -1.5

2.5x + 1.5y = 540

The new equations are (only the first one changed):

-1.5x - 1.5y = -420

2.5x + 1.5y = 540

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

x = 120

Then plug this back into one of the equations.

(120) + y = 280

y = 160

You can check by plugging these into the other equation to make sure they are correct.

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Subtracting a negative integer is the same as adding a positive integer. Adding a positive integer to any number always makes the answer larger than the original number. Therefore, if you subtract one negative integer from another your answer will be always be *greater* than the integer you started with.

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Read 2 more answers
if a cake was sold GH 200 cedis. However, there is a reduction sale of 10% on each cake if you buy 4. Amanda decides to buy 8 ca
MrMuchimi

Amanda needs to pay 1440 cedis for purchasing 8 cakes on discounted price.

<h3>What is Cost Price?</h3>

Cost price is the amount we pay to buy an item at which it is available.

Here,

Selling price of a cake = 200 cedis

Discount because of sale = 10% on each unit.

                                              (Only if 4 cakes purchased at a time)

Amanda purchased 8 cakes

So, Amanda need to pay only 90 percent of the total amount.

Total cost price of 8 cakes for Amanda = (200 X 90%) X 8

                                                                  = 180 X 8

                                                                  = 1440

Thus, Amanda needs to pay 1440 cedis for purchasing 8 cakes on discounted price.

Learn more about Cost Price from:

brainly.com/question/11027396

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1 year ago
Becky has 8 more marbles than Kim. Together they have 76 marbles. Find the number of marbles that Kim has​
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68

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    76

 -    8

_______

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