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Marat540 [252]
3 years ago
14

Plsss help me need help

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

Step-by-step explanation:

a. 9(4x - 3y - \frac{2}{3})

   36x - 27y - (\frac{9}{1} * \frac{2}{3})

  36x - 27y - \frac{18}{3}

  36x - 27y - 6

b. -2 (-6x + 3y - 1)

   12x - 6y + 2

c. \frac{1}{5}(20y - 4x - 13)

   4y - \frac{4}{5}x - \frac{13}{5}

 - \frac{4}{5}x + 4y - \frac{13}{5}

d. 8(-x - \frac{1}{2})

  -8x - 4

e. -8(-x - \frac{3}{4}y + \frac{7}{2})

   8x + \frac{24}{4}y - \frac{56}{2}

   8x + 6y - 28

Hope that helps!

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WINSTONCH [101]

Answer:

a.) w = 103 * 1.08^t

b.) 3.5weeks

Step-by-step explanation:

If Her current weight is 103 pounds and she hopes to multiply her her weight each week by 1.08, then

her weight after 1 week = 103 * 1.08 = 103 * 1.08¹

Her weight after 2 weeks = [weight of week 1] * 1.08 = [103* 1.08] * 1.08 = 103 * 1.08²

Weight after 3 weeks= [weight of week 2] * 1.08 = [103 * 1.08 * 1.08] * 1.08 = 103 * 1.08³

Hence weight (W) after t weeks = 103 * 1.08^t

b.) If W = 135, Then

103 * 1.08^t = 135

1.08^t = 135/103

1.08^t = 1.31

Taking log of both sides,

log 1.08^t = log 1.31

t log 1.08 = log 1.32

t = log 1.32/log 1.08

t = 3.5 weeks.

Hence, it will take her 3½ weeks to get to 135pounds weight.

7 0
3 years ago
Hi Can you help me with this question.
Digiron [165]

Answer:

The order of rotational symmetry is 4.

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Point′is the image of Q(3,−4) under a reflection across the x-axis.
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Step-by-step explanation:

When we reflect across the x axis, the y coordinate becomes -y

Q (3,-4) becomes Q' (3,- -4)

                              Q ' (3,4)

8 0
4 years ago
Write an equation of the line that passes through the given points. (−3, 5), (0, −1)
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Answer:

Step-by-step explanation:

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Answer:

d

Step-by-step explanation:

the graph increases then goes horizontal

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