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2 years ago

Which matrix represents the system of equations shown below?

Mathematics

1 answer:

Leona [35]2 years ago

7 0

Answer:

121-22

Step-by-step explanation:

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There is a six sided polygon in which the first side is a line, the second side is a line segment, the third side is an arrow wh

Phantasy [73]

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2 years ago

−2x−(−5−4x)=−5(2x−7)

hoa [83]

Answer:

x = 2.5

Step-by-step explanation:

- 2x - ( - 5 - 4x ) = - 5 ( 2x - 7 )

- 2x + 5 + 4x = - 10x + 35

- 2x + 4x + 10x = 35 - 5

12x = 30

x =  $\frac{5}{2}$  = 2.5

Check the answer:

L.H.S. = - 2(2.5) - [ - 5 - 4(2.5) ] = 10

R.H.S. = - 5 [ 2(2.5) - 7 ] = 10

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2 years ago

What is the opposite of 15 across

Gnoma [55]

‍♂️‍♂️ -15 a parallel, clarify your question

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3 years ago

What is 4+2(5)+(-3)=

Pavel [41]

Answer:

The answer is 11, I think, hope this helps!

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

12 is 90% of what number? with steps

a_sh-v [17]

Answer:

<h3>Let's understand the concept:-</h3>

Here 12 is 90% of a number.
So we can say that 90% of That number is 12 .
In this way we can get the the number

<h3>Solution:-</h3>

Let,

the number=x

<h3>According to the question ,</h3>

${:}\longrightarrow$ $\sf 90\% \:of \;x=12$

We know 90%=90/100
so add it

${:}\longrightarrow$ $\sf {\dfrac {90}{100}}\times x=12$

${:}\longrightarrow$ $\sf {\dfrac {90x}{100}}=12$

Now use cross multiplication method

${:}\longrightarrow$ $\sf 90x=12\times 100$

${:}\longrightarrow$ $\sf 90x=1200$

Now interchange sides .

${:}\longrightarrow$ $\sf x={\dfrac {1200}{90}}$

${:}\longrightarrow$ $\sf x={\dfrac {200}{15}}$

Answer will come in decimals so we take approximate value.

${:}\longrightarrow$ $\sf x=13.3$

${:}\longrightarrow$ $\sf x=approximately \:13$

$\therefore$ The number is 13.

6 0

2 years ago