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3 years ago

14

Estimate of the number 428731

1 answer:

lbvjy [14]3 years ago

4 0

Estimating A Sum
<span>The process of estimation requires the knowledge of rounding. When estimating a sum first decide what rounding will take place. If you want to estimate to the nearest tens, round all the numbers to the nearest tens. If you want to estimate to the nearest hundreds, round all the numbers to the nearest hundreds. The same is true for thousands, ten-thousands, etc.

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Identify all factors of the expression 12x^2-14x-6

Evgen [1.6K]

Let's solve this by using the quadratic formula:

$\frac{-b+-\sqrt{b^2-4ac} }{2a}$

Note that we only use the coefficients so a=12, b=-14, and c=-6.

Plug values in the quadratic equation:

$\frac{ - ( - 14)± \sqrt{ {( - 14)}^{2} - 4(12)( - 6) } }{2(12)}$

And so by evaluating those values we obtain:

$\frac{14+-\sqrt{484} }{24}=\frac{14+-22}{24} \\\\$

Now we have two answers which are our factors one where we add another where we subtract and so:

First factor:

$\frac{14+22}{24}=\frac{36}{24}=\frac{3}{2}$

Second Factor:

$\frac{14-22}{24}=\frac{-8}{24}=-\frac{1}{3}$

And so your factors are

$\frac{3}{2},-\frac{1}{3}$

meaning that those are your roots/x-intercepts.

6 0

3 years ago

In a community of 1000 people, what is the (annual) probability of 8 births? What is the probability of 8 deaths? What is the pr

GaryK [48]

I don’t know sorryyyy Answer:

Step-by-step explanation:

3 0

3 years ago

HELPPPP THANKS ALOT

Karo-lina-s [1.5K]

Answer:

a: always, always

b. always, always

c. never, would not, never

Step-by-step explanation:

I hope this is right (i tried)

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2 years ago

What is 1/4 of 24, PLSE HELP ME!

masya89 [10]

What times 4 equals 24. Answer: 1/4 of 24 is 6, because 5x4=24.

4 0

3 years ago

John had $50 to spend at the mall. He purchased a shirt for $17.50, a pair of pants for $24.99, and a belt for $6.99. John used

Natasha2012 [34]

Answer:

John has 2 dollars and 46 cents left after his purchases.

Step-by-step explanation:

50 - 17.50 = 32.50

32.50 - 24.99 = 7.51

7.51 - 6.99 = 0.52

0.52 + 5.00 = 5.52

5.52 - 3.06 = 2.46

5 0

3 years ago