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Tju [1.3M]
2 years ago
6

I did 12 squared + 16 squared = 400 and then I did √400 = 20 so y = 20. Is this answer correct?

Mathematics
1 answer:
Nuetrik [128]2 years ago
3 0
Yes its correct you did well :)
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PLLSSS REALLY URGENT <br> If g(x)=3x+4, determine n that g(-3)=g^-1(n).
grigory [225]

Answer:

we have:

g(-3) = 3.(-3) + 4 = -5

g {}^{ - 1} (n) =  \frac{1}{3n + 4}

because

g( - 3) = g {}^{ - 1} (n)

=>

- 5 =  \frac{1}{3n + 4} \\  \\  <  =  >  - 5(3n + 4) = 1 \\  \\  <  =  >  - 15n - 20 = 1 \\  \\  <  =  > n =  \frac{ - 21}{15}  \\  \\  <  =  > n =  \frac{ - 7}{5}

5 0
2 years ago
What is the difference of the polynomials?
Olenka [21]
(5x³ + 4x²) - (6x² - 2x - 9)

-1(6x²) -1(-2x) -1(-9) = -6x² + 2x + 9

5x³ + 4x² - 6x² + 2x + 9

5x³ - 2x² + 2x + 9  Choice D.


8 0
2 years ago
Read 2 more answers
An electronics company has developed a new hand held device. The company predicts that the start up cost to manufacture the new
alex41 [277]
Profit = revenue - expenses

expenses : 125,000 + 6.50x
revenue : 9x
so to make a profit, ur revenue (income) has to be higher then ur expenses

revenue > expenses
A. ) 9x > 125,000 + 6.50x
9x - 6.50x > 125,000
2.5x > 125,000
x > 125,000 / 2.5
x > 50,000......so they would have to sell at least 50,001 devices to make a profit <==

B.) the cost of making 1 device is 10% more then the company predicted....10% more then 6.50.....6.50(1.10) = 7.15.....this is the new cost of making 1 device <==

9x > 125,000 + 7.15x ....this is the inequality with the 10% more added
9x - 7.15x > 125,000
1.85x > 125,000
x > 125,000 / 1.85
x > 67,567.5......so to make a profit, they would have to sell at least 67,568 devices to make a profit <==


7 0
3 years ago
Applying the Third Corollary to the Inscribed Angles Theorem A circle is shown. Points A, B, C, and D are on the circle. Lines c
Marat540 [252]

Answer:

  • ∠B = 110°
  • ∠D = 70°

Step-by-step explanation:

Opposite angles in an inscribed quadrilateral are supplementary, so ...

  ∠B +∠D = 180°

  (3x -4) +(2x -6) = 180

  5x = 190 . . . . . . . . . . . add 10, collect terms

  x = 38 . . . . . . . . . . . . . divide by 5

  ∠D = 2(38) -6 = 70

  ∠B = 180 -70 = 110

The measures of angles B and D are 110° and 70°, respectively.

8 0
3 years ago
25,000 bricks were used to build the new library. The total weight of the bricks was 30,000 pounds. What is the weight of each b
Lelechka [254]
I would go with 1.2 pounds
4 0
2 years ago
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