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2 years ago

2(5 - 8x) -13 = 9(1 - x) -12

Mathematics

2 answers:

Ugo [173]2 years ago

8 0

2 (5 - 8x) - 13 = 9 (1 - x) - 12

10 - 16x - 13 = 9 - 9x - 12

10 - 13 - 16x = 9 - 12 - 9x

- 3 - 16x = - 3 - 9x

- 3 + 3 = - 9x + 16x

0 = 7x

0/7 = x

0 = x

_____

Hope it helps ⚜

jenyasd209 [6]2 years ago

8 0

Answer:

x = 0

Step-by-step explanation:

2(5 - 8x) - 13 = 9(1 - x) -12
=> 10 - 16x - 13 = 9 - 9x - 12
=> -3 - 16x = -3 - 9x
=> 0 = 16x - 9x
=> 0 = 7x
=> x = 0

Conclusion: 

Therefore, the answer is 'x = 0'

!! Hoped this helped !!

$BrainiacUser1357$

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3 years ago

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Answer:

The co-factors and their values are shown in the table below.

Step-by-step explanation:

We are given the matrix, $\begin{bmatrix}3&7&1\\7&1&-3\\8&5&1\end{bmatrix}$ .

It is required to match the co-factors with the corresponding values.

As, the co-factors are given by,

$A_{c_{ij}}$ = $(-1)^{i+j}(d)$ , where the d= determinant of the matrix after removing the i- row and j- column.

So, we have,

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i.e. $A_{c_{11}}=(-1)^{2}(1+15)=16$

2. $A_{c_{13}}$ .

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i.e. $A_{c_{13}}=(-1)^{4}(35-8)=27$

3. $A_{c_{21}}$ .

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i.e. $A_{c_{21}}=(-1)^{3}(7-5)=-2$

4. $A_{c_{22}}$ .

So, $A_{c_{22}}=(-1)^{2+2}(3\times 1-8\times 1)$

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5. $A_{c_{31}}$ .

So, $A_{c_{31}}=(-1)^{3+1}(7\times (-3)-1\times 1)$

i.e. $A_{c_{31}}=(-1)^{4}(-21-1)=-22$

Thus, we get,

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2 years ago

two numbers have these properties both numbers are greater than 8 their highest common factor is 8 their lowest common multiple

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Step-by-step explanation:

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8 must be the hcf of two separate numbers. So, one of them must be 8, and the other must be greater than 8.

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The numbers on that list that multiply evenly to 80:

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3 years ago

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Answer: $(gof)(-7) =495$

Step-by-step explanation:

Given the functions f(x) and g(x), to find $(gof)(x)$ you need to substitute $x=f(x)=x^2 + 6$ into the function g(x):

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Now, to find $(gof)(-7)$ you must substitute $x=-7$ into $(gof)(x)$ , then you get:

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3 years ago

2(5 - 8x) -13 = 9(1 - x) -12 ​

2(5 - 8x) -13 = 9(1 - x) -12