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vlabodo [156]
3 years ago
10

Solve for x(21x-9)27x=​

Mathematics
2 answers:
Step2247 [10]3 years ago
6 0

Answer:

x = 6

Step-by-step explanation:

∠ AFB and ∠ EFC are vertically opposite angles and are congruent , then

21x - 9 = 117 ( add 9 to both sides )

21x = 126 ( divide both sides by 21 )

x = 6

garik1379 [7]3 years ago
5 0

Answer:

3(7x-3)

Step-by-step explanation: I factor it.

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Find how many years it would take for an investment of $3700 to grow to $6000 at an annual interest rate of 6.2% compounded semi
lorasvet [3.4K]

Answer:

  7 years 11 months

Step-by-step explanation:

The future value formula for the value of a principal P invested at annual rate r compounded n times yearly for t years is ...

  FV = P(1 +r/n)^(nt)

For the given numbers, we want to find t:

  6000 = 3700(1 +.062/2)^(2t)

Dividing by 3700 and taking the logarithm, we get ...

  6000/3700 = 1.031^(2t)

  log(60/37) = 2t·log(1.031)

Dividing by the coefficient of t gives ...

  t = log(60/37)/(2log(1.031)) ≈ 7.92 . . . . . years

It will take about 7 years 11 months for the investment to grow to $6000.

7 0
3 years ago
Which number sentence is true?
Artemon [7]

Answer:

yes

Step-by-step explanation:

but really nice to the world I'm happy for you because you is so buetiful

5 0
2 years ago
One number is 6 more than twice another. If their sum is 51, find the numbers.
joja [24]

Answer:

y=2x+6 ; x+y=51

Step-by-step explanation:

assuming x is one number and y is the other -

one number (y) is 6 more (+6) than twice another (2x) -

using that knowledge we form an equation -

y=2x+6

the sum (x+y) is 51

using this knowledge we can make the equation -

x+y=51

now you have -

y=2x+6 or 2x-y=-6

x+y=51

using system of equations -

you add the equations -

3x=45

x=15

y=51-x => y=36

hope this helps!!

7 0
3 years ago
3(4a + 5) - 6a. Please answer this question if correct I will mark brainest.
mr Goodwill [35]

Answer:

6a + 15

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Answer you get brainliest and POINTS NO FILES
Oksanka [162]

Answer:

hiii <33

Step-by-step explanation:

3 0
3 years ago
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