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Whitepunk [10]
2 years ago
14

Resolve into factors: 81a3 + 3b3

Mathematics
1 answer:
iren [92.7K]2 years ago
8 0

Answer: (3a+b)⋅(9a  2 −3ab+b2 )

Step-by-step explanation:

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Misha deposited $3,725 into a savings account 22 years ago. The account has an interest rate of 2.2% and the balance is currentl
Annette [7]
The compounding equation is A=P(1+ \frac{r}{n}) ^{nt}. So
 
6012.37 = 3725(1+ \frac{0.022}{n}) ^{22n}    Divide by 3725

1.6141= (1+ \frac{0.022}{n}) ^{22n}

Daily      = (1+ \frac{0.022}{365}) ^{22*365}
              = (1.000060274) ^{8030}
              = 1.6225
Monthly  = (1+ \frac{0.022}{12}) ^{22*12}
              = (1.0018333) ^{264}
              = 1.6218
Quarter  = (1+ \frac{0.022}{4}) ^{22*4}
              = (1.0055) ^{88}
              = 1.6204
Yearly  = (1+ \frac{0.022}{1}) ^{22*1}
              = (1.022) ^{22}
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The answer is yearly.





5 0
3 years ago
To solve n+7=15 you should first
sertanlavr [38]

Answer:

  1. Collect like terms and simplify
  2. Subtract 7 from both sides

Step-by-step explanation:

METHOD 1

n+7=15\\n =15-7\\n = 8

METHOD 2

n+7-7=15-7\\n =8

7 0
3 years ago
Read 2 more answers
Help answer please!!!!
MAVERICK [17]

Answer:

QR ≈ 16.2 ft

Step-by-step explanation:

Using the tangent ratio in the right triangle.

tan62° = \frac{opposite}{adjacent} = \frac{QR}{RP} = \frac{QR}{8.6} ( multiply both sides by 8.6 )

8.6 × tan62° = QR , then

QR ≈ 16.2 ft ( to the nearest tenth )

5 0
3 years ago
Copy link<br> OPEN ENDED QUESTION<br> What operation(s) should come first when<br> solving?
Marina86 [1]

Answer:

Multiplication and Division unless there are parentheses

Step-by-step explanation:

4 0
2 years ago
Mike traveled to Greensboro by car. Going there took 6 hours, and the return trip was four hours. Mike averaged a speed of 81 mi
Marat540 [252]

Answer: 64.8 mph

Step-by-step explanation:

Given

Arriving time is 6 hours

return time is 4 hours

The average speed of returning 81 mph

Distance traveled while returning

\Rightarrow d=81\times 4=324\ miles

the average speed of the entire trip is

\Rightarrow v_{avg}=\dfrac{2\times 324}{6+4}=\dfrac{648}{10}=64.8\ mph

4 0
2 years ago
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