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liq [111]
3 years ago
11

The estimated populations of two different countries in 2030 are shown in the table. What is the difference between the estimate

d population of countries A and the estimated population of country B in 2030 written in scientific notation.
country A: 1,300,000,000
Country B: 144,000,000​
Mathematics
1 answer:
Hitman42 [59]3 years ago
5 0

Answer: A (1.156x10(6)

Step-by-step explanation: IM DOING THE INTERIM TOOOOOO

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Suppose the roots of the equation 2x^2−5x−6=0 are α and β.Find the quadratic equation with roots 1/α and 1/β.​
pochemuha

Answer:

6x² + 5x - 2 = 0

Step-by-step explanation:

Given

2x² - 5x - 6 = 0 ← in standard form

with a = 2, b = - 5, c = - 6, then

sum of roots α + β = - \frac{b}{a} = \frac{5}{2}

product of roots = \frac{c}{a} = - 3, then

sum of new roots = \frac{1}{\alpha } + \frac{1}{\beta }

= \frac{\beta+\alpha  }{\alpha \beta }

= \frac{\frac{5}{2} }{-3} = - \frac{5}{6}

product of new roots = \frac{1}{\alpha } × \frac{1}{\beta }

= \frac{1}{\alpha\beta  } = - \frac{1}{3}

Hence the required equation is

x² + \frac{5}{6} x - \frac{1}{3} = 0 or

6x² + 5x - 2 = 0 ( multiplying through by 6 )

                           

8 0
4 years ago
Find the value of -3/8 x 8/15=
g100num [7]

Answer:

-1/5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Simplifica lo siguiente. ​
GREYUIT [131]

my number 5467832342

Step-by-step explanation:

6 0
3 years ago
Select all the proper fractions .
allsm [11]

<em>Answer:</em>

<em>B</em>

<em>C</em>

<em>F</em>

<em>Step-by-step explanation:</em>

<em>6/7</em>

<em>12/17</em>

<em>6/25</em>

<em>Best,</em>

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6 0
3 years ago
Pls help
solong [7]
Ok let’s solve it

5(x-2)^2-20=0

first let’s foil (x-2)

5(x^2-4x+4) -20=0

now distribute the 5

5x^2 -20x +20 -20 = 0

combine like terms

5x^2-20x=0

take the gcf

5x(x-4)=0

x=0, 4

solutions are (4,0) and (2, -20) because the original vertex form a(x-h)^2+k

7 0
3 years ago
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