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miss Akunina [59]
3 years ago
8

F(x)= 3x^2+5x-8. Solve the quadratic equation

Mathematics
1 answer:
7nadin3 [17]3 years ago
7 0

Answer:

             \bold{x_1=1\ ,\quad x_2=-\dfrac83}

Step-by-step explanation:

3x^2+5x-8=0\quad\implies\quad a=3\,,\ b=5\,,\ c=-8\\\\x=\dfrac{-5\pm\sqrt{5^2-4(3)(-8)}}{2\cdot3}=\dfrac{-5\pm\sqrt{25+96}}{6}=\dfrac{-5\pm\sqrt{121}}{6}\\\\ x_1=\dfrac{-5+11}{6}=1\ ,\qquad x_2=\dfrac{-5-11}{6}=\dfrac{-16}6=-\dfrac83

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What is 1/2 + 2/3?, what is 2/3 multiplied by 3/4?
7nadin3 [17]

Answer:

Hi! The answer to your question is 1. 7/6 and 2. 1/2

Step-by-step explanation:

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2 years ago
A powerful computer is purchased for $2000, but loses 20% of its value each year. How much will it be worth 4 years from now?
Jet001 [13]

Answer:

(A)Decay

(b)0.8

(c)First Term

(d)f(t)=2000(0.8)^t

(e)$819.20

Step-by-step explanation:

The exponential function for modelling growth or decay is given as:

A(t)=A_o(1\pm r)^t,

Where:

Plus indicates growth and minus indicates decay.

A_o$ is the Initial Value\\r is the growth/decay rate\\t is the time period

For a powerful computer that was purchased for $2000, but loses 20% of its value each year.

(a)Since it loses value, it is a decay.

(b)Multiplier

Its value decays by 20%.

Therefore, our multiplier(1-r) =(1-20&)=1-0.2

Multiplier =0.8

(c)$2000 is our First term (or Initial Value A_o)

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(e)Since we require the worth of the computer after 4 years,

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6 0
2 years ago
Anyone good at math? will give brainlest to correct
V125BC [204]

Answer:

8%

Step-by-step explanation:

27 - 25 = 2

2/25 x 100 = 8%

8% increase

answer is 8%

6 0
3 years ago
Read 2 more answers
Write the prime for factorization of 4
faust18 [17]

Answer:

2×2 mark me brainlist

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  • divided by 2
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4 0
1 year ago
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