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stira
10 days ago
9

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

Mathematics
2 answers:
Inessa [12.1K]10 days ago
8 0

Final answer:

a

Detailed explanation:

Zina [11.9K]10 days ago
6 0
Begin by grouping the first two terms together and the last two together, then factor and redistribute

(4x^3+x^2)+(-8x-2)
(x^2)(4x+1)+(-2)(4x+1)
x^2(4x+1)-2(4x+1)
the answer is the first one

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g A sailing ship stopped at several islands, releasing one mating pair of goats onto each one. On the large island, the goats' g
tester [11900]

Response:

The goat population will reach 1000 in a time span of 12.4 years

Detailed explanation:

After t years, the population of goats is described by

N = N_0e^{bt}

where N_0 indicates the initial count of goats and b is the growth rate per capita.

Based on the problem,

  • N_0 = 2
  • b = 0.5
  • N = 1000

1000 = 2e^{0.5t}

e^{0.5t} = 500

0.5t = \ln 500 = 6.214

t = \dfrac{6.2}{0.5} = 12.4

5 0
1 month ago
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Which of the following represents the general term for the sequence 2, 4, 6, 8, 10, . . .?
zzz [11820]
A(n)=a(1)+(n-1)d=
a(n)=2+(n-1)2=2+2n-2=2n
7 0
1 month ago
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if 20% of the cases of soda that Taylor sold were cherry soda, how many cases of cherry soda did taylor sell?
tester [11900]
0.2 times the total soda cases sold
6 0
1 month ago
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Which are the solutions of x2 = –5x + 8? StartFraction negative 5 minus StartRoot 57 EndRoot Over 2 EndFraction comma StartFract
tester [11900]

Answer:

x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

Detailed solution:

Given:

The problem to solve is:

x^2=-5x+8

Convert the equation into the standard quadratic form ax^2+bx +c =0, where a,\ b,\ and\ c represent constants.

So, by adding 5x-8 to both sides, we get:

x^2+5x-8=0

Note that a=1,b=5,c=-8.

The roots of this quadratic are found by applying the quadratic formula given as:

x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Substitute a=1,b=5,c=-8 into the formula and calculate for x.

x=\frac{-5\pm \sqrt{5^2-4(1)(-8)}}{2(1)}\\x=\frac{-5\pm \sqrt{25+32}}{2}\\x=\frac{-5\pm \sqrt{57}}{2}\\\\\\\therefore x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

Hence, the roots are:

x=\frac{-5-\sqrt{57} }{2}\ or\ x=\frac{-5+\sqrt{57} }{2}

4 0
1 month ago
Read 2 more answers
During batting practice, two pop flies are hit from the same location, 2 s apart. The paths are modeled by the equations h = -16
Inessa [12141]

Answer:

2.5 seconds after the initial ball was struck.

Step-by-step explanation:

The height equations are:

  • h = -16t² + 56t
  • h = -16t² + 156t - 248

At the point where the balls intersect, both heights are alike, therefore:

-16t² + 56t = -16t² + 156t - 248

-16t² + 56t + 16t² - 156t + 248 = 0

- 100t + 248 = 0

248 = 100t

t = 248/100

t = 2.48 ≈ 2.5

4 0
1 month ago
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