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2 years ago

Please help me I will give brianliest if u are right 2.5(10x+8)+3

Mathematics

2 answers:

zhannawk [14.2K]2 years ago

8 0

Answer:

25x +23

Step-by-step explanation:

2.5(10x + 8) +3

2.5(10x + 8)

25x + 20

25x + 20 + 3

25x + 23

hope dis helps ^-^

sineoko [7]2 years ago

4 0

25x+23 is the answer

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Black_prince [1.1K]

Answer:

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Step-by-step explanation:

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2 years ago

The odds that a book will be favourable reviewed by three independent critic. a b and c are 5 to 2, 4 to 3 and 3 to 4 respective

Lelu [443]

Answer:

1/4

Step-by-step explanation:

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2 years ago

The following information is known about a savings account.

iogann1982 [59]

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2 years ago

5.8 times 10 and show work (optional)

Step2247 [10]

Answer:

Step-by-step explanation:

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7 0

2 years ago

Write the equation of a line perpendicular to 9xplus7yequals6 that passes through the point (9,negative 7).

andrew11 [14]

$k:\ y=m_1x+b_1\\\\l:\ y=m_2x+b_2\\\\k\ ||\ l\iff m_1=m_2\\\\k\ \perp\ l\iff m_1m_2=-1$

We have:

$k:\ 9x+7y=6\ \ \ |-9x\\\\7y=-9x+6\ \ \ \ |:7\\\\y=-\dfrac{9}{7}x+\dfrac{6}{9}\to m_1=-\dfrac{9}{7}\\\\l:\ y=m_2x+b\\\\l\ \perp\ k\iff-\dfrac{9}{7}m_2=-1\ \ \ \ |\cdot\left(-\dfrac{7}{9}\right)\\\\m_2=\dfrac{7}{9}\to\ l:\ y=\dfrac{7}{9}x+b$

We know. The line <em>l</em> passes throught the point (9, -7). Substitute the coordinates of the poin to the equation of line<em> l </em>:

$-7=\dfrac{7}{9}\cdot9+b\\\\-7=7+b\ \ \ \ |-7\\\\b=-14$

$y=\dfrac{7}{9}x-14\ \ \ \ |\cdot9\\\\9y=7x-126\ \ \ \ |-9y\ |+126\\\\7x-9y=126$

Answer: $y=\dfrac{7}{9}x-14\to7x-9y=126$

7 0

3 years ago