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sleet_krkn [62]
3 years ago
12

Given the system of equations, match the following items. x + 2y = 7 x - 2y = -1 y determinant 2. x determinant 3. system determ

inant
Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
8 0

Answer:

y determinant is 3

x determinant  is 2

system determinant is 1

soldier1979 [14.2K]3 years ago
6 0

Answer:

x=3

y = 2

Solution is (3,2)

Step-by-step explanation:

x + 2y = 7

x - 2y = -1

Solve the system of equations by elimination method

LEts add both equations

x + 2y = 7

x - 2y = -1

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

2x +0 = 6

2x = 6

Divide both sides by 2

x= 3

Now plug in x=3 in first equation

x + 2y = 7

3 + 2y = 7

subtract 3 from both sides

2y = 4

divide both sides by 24

y = 2

Solution is (3,2)

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Answer:

I am pretty sure its the first one

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2 years ago
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barxatty [35]

On question 9, x = 0.46284330

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2 years ago
Despite control measures, the pigeon population in Winchester is increasing by 10% each year. If there are currently 9,520 pigeo
TEA [102]

Using an exponential function, it is found that there will be 32,866 pigeons in 13 years.

<h3>What is an exponential function?</h3>

An increasing exponential function is modeled by:

A(t) = A(0)(1 + r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

The initial value and the growth rate are given by:

A(0) = 9520, r = 0.1.

Hence the function is given by:

A(t) = 9520(1.1)^t

Hence in 13 years, the amount of pigeons will be of:

A(13) = 9520(1.1)^{13} = 32866

More can be learned about exponential functions at brainly.com/question/25537936

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3 0
2 years ago
The measure of angle ABD is (0.15x+65) and the measure of angle CBD is(0.1x+28) . Find the value of x.
Andrej [43]

Answer:

x = 348

Step-by-step explanation:

The measure of angle ABD is (0.15x+65) and the measure of angle CBD is(0.1x+28) . Find the value of x.

0.15x + 65 + 0.1x + 28 = 180

0.25x + 93 = 180

0.25x = 180 - 93

0.25x = 87

x = 87/0.25

x = 348

3 0
2 years ago
I NEED HELP PLEASE, THANKS!
Talja [164]

The amount of lines of symmetry of a shape is equal to the number of sides that shape has.

A heptagon has 7 sides, so, there are 7 lines of symmetry.

Best of Luck!

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2 years ago
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