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Nesterboy [21]
3 years ago
15

I would be GREATLY appreciative if you helped me out. Oh and also I WILL GIVE BRAINLIEST.

Mathematics
2 answers:
Basile [38]3 years ago
5 0

Answer:

  • C. x = 4.38, −0.38

Step-by-step explanation:

  • -3(x - 2)² + 17 = 0
  • -3(x - 2)² = - 17
  • (x - 2)² = 17/3
  • x - 2 = ± \sqrt{17/3}
  • x - 2 = ± 2.38
  • x = 2 + 2.38 = 4.38 or x = 2 - 2.38 = -0.38

Correct choice is C

Elis [28]3 years ago
3 0

Answer:

x = 4.38

Step-by-step explanation:

Solve the equation:

- 3(x - 2)2 + 17 = 0x

Apply multiplicative distribution law:

- (3x - 6) \times 2 + 17 = 0

Apply muliplicative distribution law:

- 6x + 12 + 17 = 0

Rearrange unknown terms to the left side of the equation:

- 6x =  - 12 - 17

Calculate the sum or difference:

- 6x =  - 29

Divide both sides of the equation by the coefficienr of variable:

x =  - 29 \div ( - 6)

Calculate:

x =  \frac{29}{6}

Round the number:

x =  \frac{29}{6}  \\ 0.01

Round the number:

x = 4.38

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Answer:

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Step-by-step explanation:

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so B, 1 solution

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Answer:

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Step-by-step explanation:

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3 years ago
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oee [108]

Let the number of nickels be = x

Let the number of dimes be = d

Let the number of quarter be = n

Given is, she has twice as many dimes as quarters

d=2n or n = 0.5d

She has two less quarters than nickles.

n= x-2 or

x= n+2

Total values of coins is = $2.60

0.05x+0.10d+0.25n=2.60

Now replace x with (n+2) and d with 2n

0.05(n+2)+0.10(2n)+0.25n=2.60

0.05n+0.10+0.20n+0.25n=2.60

0.50n+0.10=2.60

0.50n=2.50

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Hence, Elina has 7 nickels, 10 dimes and 5 quarters.

3 0
3 years ago
Find the surface area of the rectangular prism
irina [24]

Answer:

d 100

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3 years ago
Read 2 more answers
For <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%204x%2B1" id="TexFormula1" title="f(x) = 4x+1" alt="f(x) = 4x+1" align="abs
Kamila [148]

\bf \begin{cases} f(x)=4x+1\\ g(x)=x^2-5\\[-0.5em] \hrulefill\\ (f\circ g)(4)=f(~~g(4)~~) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(4)=(4)^2-5\implies g(4)=16-5\implies \boxed{g(4)=11} \\\\\\ f(~~g(4)~~)\implies f(11)\implies f(11)=4(11)+1\implies \blacktriangleright f(11)=45\blacktriangleleft

3 0
3 years ago
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