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MrMuchimi
3 years ago
13

Help?? Thanks if you do​

Mathematics
1 answer:
Mariana [72]3 years ago
6 0

Answer:

l = 6a^{4} + 2a - 1

Step-by-step explanation:

the area (A) of a rectangle is calculated as

A = lw ( l is the length and w the width )

given A = 18a^{5} + 6a² - 3a and w = 3a , then

3aw = 18a^{5} + 6a² - 3a ( divide each term by 3a )

w = \frac{18a^{5} }{3a} + \frac{6a^2}{3a} - \frac{3a}{3a} = 6a^{4} + 2a - 1

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11Alexandr11 [23.1K]

Answer: 27g+12q-8qr+42d-90

Step-by-step explanation:

3(9g+8),-6(9-2q) -8(9r+6) and 6(-2+7d)

=27g+24-54+12q-8qr-48-12+42d

=27g+12q-8qr+42d-90

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Explain how you could use the work backward problem solving strategy to solve the equation x/4 - 6=2
STatiana [176]
\frac{x}{4}-6=2\ \ \ First\ multiply\ each\ side\ by\ 4\\\\
x-6*4=2*4\\\\
x-24=8\ \ \ |Add\ 24\ to\ each\ side\\\\
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7 0
3 years ago
Find the missing value, answer and explain
Sonbull [250]

Answer:

-24

Step-by-step explanation:

to find the answer to this you must find out what would make the equation constant

everytime the x goes up by 3 the y goes down by 6

so every time the x goes up by 1 the y goes down by 2

so

you would subtract 5 * 2 (or 10) to -14

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8 0
2 years ago
Find the sides of a rectangle having area 125 square units if the sides are in the ratio 5:3.
tatiyna

For this case we have the following data:

Area of the rectangle, A = 125

Relationship of the sides 5: 3

By definition, the area of a rectangle is given by:

A = a * b

Where

  • a: is the longest side.
  • b: it is the side of least length.

If the sides have a 5: 3 ratio, it means:

\frac{a}{b}=\frac{5}{3}

a=\frac{5}{3}b

Substituting in the formula of the area, we have:

125 =a * b\\

125=\frac{5}{3}b*b

Clearing b:

3 * 125 = 5 * b ^ 2

\frac{375}{5}= b ^ 2

75 = b ^ 2

b =\sqrt{75}b = 8.7 units

Substituting and clearing:

125 = a * 8.7

a =\frac{125}{8.7}

a = 14.4units

So, the sides are:

a = 14.4units

b = 8.7units

Answer:

a = 14.4units

b = 8.7units


7 0
3 years ago
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