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eduard
4 years ago
7

Guys can someone PLEASE help me. Which of the following statements uses the multiplicative identity? -8 + 1 = 1 + (-8) (-8)(-1)

= (-1)(-8) (-8)(1) = -8 -8 + 0 = -8
Mathematics
1 answer:
skelet666 [1.2K]4 years ago
3 0

Hi! it's the third statement

hope i helped

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How can you determine if a point is a solution to a system of linear equations?<br> Please Help!
zhenek [66]

Answer:

You can substitute the x value of coordinate (x,y) in the equation. If the outcome = the y value in the coordinate (x,y), then you have determined it to be on the system of linear equations.

Step-by-step explanation:

Point P has a coordinates: ( Px , Py ).

You can choose which value is easy to substitute. Eighter start with the Py or you could start with the Px. It could save you time if you pick the right one for the job.

If you want to verify if any point is valid in any (linear) equation(s), you can:

a) substitute the x value of coordinate (x,y) in the equation, and if the outcome has the same value as y in the coordinate (x,y), then that point is a valid solution of the (linear) equation.

b) substitute the y value of coordinate (x,y) in the equation, and if the outcome has the same value as x in the coordinate (x,y), then that point is a valid solution of the (linear) equation.

8 0
4 years ago
i already have the answers but i need to show my work. ill tell you my insta and please show me a picture of the work :))
Elodia [21]

Answer:

1:

{( - 6)}^{2}  \times  {( - 6)}^{5}

from law of indices:

{a}^{n}  \times  {a}^{m}  =  {a}^{(n + m)}

therefore:

= ( - 6) {}^{ \{2 + 5 \}}  \\  = ( - 6) {}^{7}  \\  = { \boxed{ \boxed{ - 279936}}}

2:

- 4 {a}^{5} (6 {a}^{5} ) \\  = ( - 4 \times 6)( {a}^{5}  \times  {a}^{5} ) \\  =  - 24  \{{a}^{(5 + 5)}  \} \\  = { \boxed{ \boxed{ - 24 {a}^{10} }}}

3:

( - 7 {a}^{4} b {c}^{3} )(5a {b}^{4}  {c}^{2} ) \\  = ( - 7 \times 5)( {a}^{4}  \times a)(b \times  {b}^{4})  \times ( {c}^{3}  \times  {c}^{2} ) \\  =  - 35 {a}^{5}  {b}^{5 }  {c}^{5}  \\  = { \boxed{ \boxed{ - 35 {(abc)}^{5} }}}

4:

\frac{ {8}^{15} }{ {8}^{13} }

from law of indices:

\frac{a {}^{n} }{ {a}^{m} }  =  {a}^{(n - m) }  \\

therefore:

=  {8}^{(15 - 13)} \\ { \boxed{ \boxed{ {8}^{2} = 64 }}}

follow the procedure for application to other questions.

<em>Any</em><em> </em><em>question</em><em>,</em><em> </em><em>be</em><em> </em><em>free</em><em> </em><em>to</em><em> </em><em>ask</em><em>.</em><em> </em>Thank you …

6 0
3 years ago
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Jayla is making brownies that require one cup of water to 4 cups of flour she wants to use the same ratio to make more brownies
siniylev [52]

Answer:

24 cups of flour

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For every 1 cup of flour, Jayla need 1/4 cups of water

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3 years ago
Write a number between 80 and 100 that has exactly 4 factors, one of which is 5
posledela
Given:
A number between 80 and 100 
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I'll choose 90. It is between 80 and 10.

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Factors of 90 are: 1, 3, 5, and 6.

  1 x 3 =   3 
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15 x 6 = 90

1 x 3 x 5 x 6 = 90
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14/24

Or

58%

Simplified: 7/12
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