3 years ago

Simplify each expression. –4 + 10a – 5 – a

Mathematics

2 answers:

Strike441 [17]3 years ago

6 0

Answer:

$9a - 9$

Step-by-step explanation:

$10a - a - 4 - 5 \\ 9a - 9$

Oksanka [162]3 years ago

5 0

Answer:

A. 9a – 9

Step-by-step explanation:

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Find the point 3x - 7x₂ =5. of the lines x, - 5x2 = 1 and of intersection

tia_tia [17]

Answer:

( $\frac{9}{4},\frac{1}{4})$

Step-by-step explanation:

We are given that two lines

$x_1-7x_2=5$ and $x_1-5x_2=1$

We have to find the intersection point of two lines

Let $3x_1-7x_2=5$ (equation 1)

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Multiply equation 2 by 3 then subtract from equation 1

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$x_1=\frac{27}{4\times 3}=\frac{9}{4}$

Hence, the intersection point of two given lines is ( $\frac{9}{4},\frac{1}{4})$

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