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Verdich [7]
2 years ago
7

HELP!! Find the solution of this system of equations x - y = 4 - 10x + y = -58

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
4 0

Answer:

Step-by-step explanation:

given: x-y = 4

x=4+y

given: -10x + y = -58

plug in for x

-10(4 + y) + y = -58

-40 - 10y + y = -58

-9y = -18

y = -18 / -9

y = 2

now plug in 2 for y in the first equation

x-2=4

x=6

There is the solution  x=6, y=2  :)

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<1 = 93 (vertical opposite angle are equal)

Step-by-step explanation:

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3 years ago
How many terms are in the binomial expansion of (2x+3)^5
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It depends if you need to simplify it. If you dont than three. If you do than 2
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Which number is composite A 19 B 23 C 33 D 37​
raketka [301]

Option C is correct.

Step-by-step explanation:

We need to identify the composite numbers from the given options

<u>Composite Numbers</u>

A number is composite number if it has factors other than 1 and the number itself i.e the number is not prime.

The numbers 19, 23 and 37 are prime numbers because they have factors 1 and the number itself while 33 is composite number because it has factors 1,3,11,33.

So, Option C is correct.

Keywords: Composite Numbers

Learn more about Composite Numbers at:

  • brainly.com/question/10941043
  • brainly.com/question/4706270

#learnwithBrainly

7 0
2 years ago
Read 2 more answers
Solve for x and y<br><br>6/x+2y + 5/x-2y = -3 ;<br>3/x+2y + 7/x-2y = -6​
Radda [10]

Step-by-step explanation:

Let

{1/(x+2y)} = u -----Eqn(1)

{1/(x-2y)} = v ------Eqn(2)

So, given equation can be rewritten as

⇛6u + 5v = -3 ---Eqn(3)

⇛3u + 7v = -6 -----Eqn(4)

On multiply equation (4) by 2, we get

⇛6u + 14v = -12 -----Eqn(5)

On subtracting equation (3) from equation (5), we get

⇛9v = -9

⇛v = -9/9

⇛v = -1 ----Eqn(6)

Put value of v in equation (3), we get

6u + 5v = -3

⇛6u + 5 * (-1) = -3

⇛6u -5 = -3

⇛6u = -3 + 5

⇛6u = 2

⇛u = 2/6

⇛u = (2÷2)/(6÷2)

⇛u = 1/3 -----Eqn(7)

Now, substituting value of u and v in equation (1) and equation (2), we get

{1/(x+2y)} = 1/3 and {1/(x-2y)} = -1

⇛x + 2y = 3 -----Eqn(8)

⇛x - 2y = -1 -------Eqn(9)

Now, add equation (8) and equation (9) , we get

⇛2x = 2

⇛x = 2/2

<h3>⇛x = 1 -----Eqn(10)</h3>

On substituting x = 1 in equation (8), we get

x + 2y = 3

⇛ 1 + 2y = 3

⇛2y = 3 - 1

⇛2y = 2

⇛y = 2/2

<h3>⇛y = 1 ------Eqn(11)</h3>

Therefore, x = 1 and y = 1

<u>Answer</u><u>:</u> Hence the value of x and y is 1 and 1.

8 0
2 years ago
Lin has a drawing with an area of 18 square inches. If she increases all the sides by a scale factor of 3, what will the new are
Amiraneli [1.4K]

Answer:

2/3

Step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves

sry if wrong but i hope it helps

3 0
2 years ago
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