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3 years ago

Solve -1/2w - 3/5 = 1/5w

Mathematics

1 answer:

Yuki888 [10]3 years ago

8 0

Answer:

w = -6/7

Step-by-step explanation:

Step 1:

-5/10w - 6/10 = 2/10w

Step 2:

-6/10 = 7/10w

Step 3:

-6/10 × 10/7w

Answer:

w = -6/7

Hope This Helps :)

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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 l passes throught the point (9, -7). Substitute the coordinates of the poin to the equation of line l :

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

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

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

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3 years ago

What is the explicit formula for the sequence below? 4, -12, 36, -108 ...

liubo4ka [24]

Answer:x ×-3

Step-by-step 4×-3= -12

-12 × -3= 36

and so on

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3 years ago

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How do i construst a histogram?

icang [17]

A histogram is like a bar graph without gaps between the rectangles. So you first create a bar graph with your labels and title, then you get rid of the gaps between the rectangles.

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3 years ago

At time t=0, water begins to drip out of a pipe into an empty bucket. After 56 minutes, 8 inches of water is in the bucket. what

Sergio [31]

Answer:

W = (1/7) t

Step-by-step explanation:

At t = 0, W = 0

At t = 56 minutes , W = 8 inches

W = k*t The y intercept = 0 because t = 0 W = 0

8 inches = k * 56 minutes

k = 8 / 56

k = 1/7 inches / minute

W = (1/7) t

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3 years ago

Molly buys a pack of crisps and a carton of orange juice costing a total of 187 pence.

Usimov [2.4K]

Answer:

£1.87

Step-by-step explanation:

100 pennies is equal to a pound.

You divide the pennies to 100 and your answer will be converted to pounds.

187*100=1.87

£1.87

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4 years ago