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sveta [45]
3 years ago
7

ashur solves the following system of linear euations. -3a + 7b = -16. -9a + 5 b = 16 which statement is true about the solution

to this system of equations?
Mathematics
1 answer:
tiny-mole [99]3 years ago
6 0

Answer:

a=-4, b=-4. (-4, -4).

Step-by-step explanation:

-3a+7b=-16

-9a+5b=16

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

-3(-3a+7b)=-3(-16)

-9a+5b=16

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

9a-21b=48

-9a+5b=16

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

-16b=64

b=64/-16

b=-4

-3a+7(-4)=-16

-3a-28=-16

-3a=-16+28

-3a=12

a=12/-3

a=-4

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A set of prime number between 5 and 15.express it in listing and setbuilder methods<br>​
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Answer:

A set of prime number between 5 and 15.

Listing method:{ 7,11,13}

Set builder method:{X:X is a set of prime number between 5 and 15}

In listing method,the elements are listed inside the brackets.Listing method are also called rooster method.

In set builder method,the elements are represented by a variable stating their common properties.Set builder method are also called rule method.

Hope this helps...

Good luck on your assignment..

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Winston bought b boxes of granola bars. There are 15 granola bars in each box. Choose the expression that shows how many granola
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Step-by-step explanation:

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Write the value of the digit in the hundreds place and the value of the digit in the tens place for 440. What is the relationshi
Musya8 [376]
  • the hundreds digit value is 4.
  • The tens digit value is 4

the relation between the values of these two digits is an equality relation.

<h3 /><h3>How to compare the hundreds value and the tens value?</h3>

In a 3 digit number digit, each place value has a name. The hundreds digit value is the digit in the third place (counting from the right) and the tens digit value is the digit in the second place (finally, the unit digit value is the first digit, but this does not matter for this question).

In this case, the three-digit number is:

440

  • Then the hundreds digit value is 4.
  • The tens digit value is 4

So both numbers are 4.

Now, we can see that both digits are the same digit, so the relation between the values of these two digits is an equality relation:

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If you want to learn more about place values:

brainly.com/question/12386995

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8 0
1 year ago
Find the equation of the circle with center (10, 0) and point (5, 2).
Crank

Answer:

(x - 10)² + y² = 29

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (10, 0), thus

(x - 10)² + (y - 0)² = r²

The radius is the distance from the centre to a point on the circle

Calculate r using the distance formula

r = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (10, 0) and (x₂, y₂ ) = (5, 2)

r = \sqrt{(5-10)^2+(2-0)^2}

  = \sqrt{(-5)^2+2^2}

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Thus

(x - 10)² + (y - 0)² = (\sqrt{29} )², that is

(x - 10)² + y² = 29 ← equation of circle

4 0
3 years ago
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