MATHEMATICS COLLEGE

2x + 5y = 13
-x + 4y = 13
solve by elimination

Answers

Answer 1

Answer:

Answer:

i think x=-1 and y=3. ....

Answer 2

Answer:

Answer:

x = -1 , y = 3

Step-by-step explanation:

2x+5y = 13

-x+4y = 13

Decide whether to add or subtract the two equations by using Different Add Same Subtract (DASS) or in case below as its SUBTRACT

i apply (SDSS).

We subtract 5y as this is easier equation either positive prioritises or if both positive then easier number becomes priory.

Results to SDSS before substituting Y if 5y etc was subtracted

2x+5y = 13 Subtract -5

2x+5y -5y = 13 -5y

2x= 13 - 5y then Divide by 2

2x / 2 = 13/2 - 5y/2 Show then

x = 13 - 5y / 2 + 4y = 13 Simplify

simplify 13 - 13y / 2 as y = 3

as 13/2 = 6.5 and 2.5 +4 = 6.5

y = 3

Substitute y = 3

13-5y )3) / 2

13-5 (3) / 2

BODMAS Brackets first Multiplying only for y substitute 5y = 5 x 3

-5 (3) = 15

13-15 = -2

-2/2 = -1

x = -1

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-1/2+c=31/4 solve for c I will give branliest

Answers

Answer:

c = 8.25

Step-by-step explanation:

31/4 = 7.75

-1/2 = -.5

7.75 - (-.5) = 8.25

Hopefully this helps you :)

pls mark brainlest ;)

Steve began a baseball card collection by purchasing some cards. He increased the number of cards in the collection by a constant amount each week after that. The table below shows the total number of cards in the collection at the end of several weeks. How many cards did Steve initially purchase to begin his collection

Answers

There are 95 cards did Steve initially purchase to begin his collection.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Steve began a baseball card collection by purchasing some cards.

And, He increased the number of cards in the collection by a constant amount each week after that.

Now, In 3 weeks he collect 285 cards.

Hence, Number of cards to collect in initially is,

⇒ 285/3

⇒ 95

Thus, There are 95 cards did Steve initially purchase to begin his collection.

Learn more about the divide visit:

brainly.com/question/28119824

#SPJ6

Answer:95

Step-by-step explanation:

95x3=285

What is the probability of the next car being silver.

Answers

Answer:

40%

Step-by-step explanation:

11+24+16+9=60

24/60=2/5

.40

40%

Idk how to solve this find value of x and y

Answers

Answer:

Try out each different answers and see which one would work.

Step-by-step explanation:

Go to A, and then B and then C and then D to find the correct one. Plug in the answers to find out which one is correct.

Below are the jersey numbers of 11 players randomly selected from a football team. Find the range, variance, and standard deviation for the given sample data. What do the results tell us? 33 29 97 56 26 78 83 74 65 47 58 Range = (Round to one decimal place as needed.) Sample standard deviations ? = (Round to one decimal place as needed) Sample variance = (Round to one decimal place as needed) What do the results tell us? a. Jersey numbers are nominal data that are just replacements for names, so the resulting statistics are meaningless. b. Jersey numbers on a football team vary much more than expected c. The sample standard deviation is too large in comparison to the range. d. Jersey numbers on a football team do not vary as much as expected.