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Maurinko [17]
4 years ago
8

Which of the following are solutions to the equation below?

Mathematics
2 answers:
NemiM [27]4 years ago
4 0

Answer:

C and D

Step-by-step explanation:

Given

(3x - 5)² = 19 ( take the square root of both sides )

3x - 5 = ± \sqrt{19} ( add 5 to both sides )

3x = ± \sqrt{19} + 5 ( divide both sides by 3 )

x = \frac{+/-\sqrt{19}+5 }{3}

x = \frac{-\sqrt{19}+5 }{3} → C

x = \frac{\sqrt{19}+5 }{3} → D

Dennis_Churaev [7]4 years ago
3 0

Answer:

C and D

Step-by-step explanation:

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What is the degree of the polynomial?
neonofarm [45]

Answer:

5

Step-by-step explanation:

6x^2 + 7x^3 + 8x^5 +9

Write in order from highest power to lowest power

8x^5 + 7x^3 + 6x^2  +9

The highest power ( largest exponent) is 5

The degree of the polynomial is 5

6 0
2 years ago
The number of fish (f) in a fish tank increases when the number of algae blooms (a) decreases. Write the correct equation for th
Artyom0805 [142]

Answer:

  • f = -2/5a +14
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Step-by-step explanation:

The 2-point form of the equation for a line is useful when you are given two points to work with:

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

The independent variable (x) is apparently "algae blooms" and is to be represented by "a". The dependent variable (y) is "number of fish" and is to be represented by "f". So, we have ...

  f = (4 -10)/(25 -10)(a -10) +10

  f = -6/15(a -10) +10

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Four a=4, the fish population is predicted to be ...

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6 0
3 years ago
On Monday, 408 students went on a trip to the 200 All 7
kap26 [50]

Answer:

57

Step-by-step explanation:

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399/7 =57

7 0
3 years ago
3.) 7:14. Find the value ofr
slega [8]

Answer:

1:2 all you have to do is simplify

5 0
3 years ago
Find the simple interest on $500 at six percent for one year
solmaris [256]

Answer: $30

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Putting your numbers into the formula, it will look like this:

I = 500 x .06 x 1

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The interest on $500 for one year is $30.

7 0
3 years ago
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