The function f(t) = 1600(1.3) represents the change in a quantity over t days.

Mathematics

1 answer:

iragen [17]3 years ago

6 0

Answer:

growth is 0.3 0r 30%

Step-by-step explanation:

1.3 is the base b in exponential function, and when b > 1 that means that graph increases.

Exponential growth is also given as y = a (1 + r)^x,

so instead b it is 1 + r where r is rate of growth because of + sign.

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(5x² - 8x + 1) + (2x2 - 4x - 11)

Y_Kistochka [10]

Answer:

7x^2 −12x−10

Step-by-step explanation:

((5x2 - 8x) + 1) + (2x2 - 4x - 11)

Factoring 7x2-12x-10

The first term is, 7x2 its coefficient is 7 .

The middle term is, -12x its coefficient is -12 .

The last term, "the constant", is -10

Step-1 : Multiply the coefficient of the first term by the constant 7 • -10 = -70

Step-2 : Find two factors of -70 whose sum equals the coefficient of the middle term, which is -12 .

-70 + 1 = -69

-35 + 2 = -33

-14 + 5 = -9

-10 + 7 = -3

-7 + 10 = 3

-5 + 14 = 9

-2 + 35 = 33

-1 + 70 = 69

Observation : No two such factors can be found !!

Conclusion : Trinomial can not be factored

3 0

3 years ago

Math question.

Oduvanchick [21]

Answer:

C) 25%

Step-by-step explanation:

let salt be 's'

let water be 'w'

$\frac{s+1}{w+s+1} = 33\frac{1}{3} \\\\\frac{s+1}{w+s+1} = \frac{1}{3} \\\\\frac{w + s + 1}{3} = s+1\\\\3s +3 = w+s+1\\w = 2s+2\\\\\frac{s+1}{w+1+s+1} = \frac{3}{10} \\\\\frac{3(w+s+2)}{10} = s+1\\\\3w+3s+6 = 10s+10\\**w = 2s+2\\3(2s+2) + 3s + 6 = 10s+10\\\\6s+6+3s+6 = 10s+10\\9s+12 = 10s+10\\-s = -2\\s = 2\\\\w= 2s+2\\w=2*2+2\\w = 6\\\\\frac{2}{2+6} = \frac{2}{8} = 0.25$