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Ksju [112]
3 years ago
11

Factor quadratic plz 15x^2-4x-4=

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0

Answer:

x = 2/3 or x = -2/5

Step-by-step explanation:

15x^2 - 4x - 4 = ?

factor the left side of the expression and set factors equal to zero:

(3x-2)(5x+2)=0

3x - 2 =0 or 5x + 2 =0

3x =2 or 5x = -2

x = 2/3 or x = -2/5

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The factors of 35, 48, and 60 are listed below. Two of these numbers are relatively prime. Click the two numbers that are
Nostrana [21]

Answer:

35 and 48

Step-by-step explanation:

4 0
3 years ago
Please calculate this limit <br>please help me​
Tasya [4]

Answer:

We want to find:

\lim_{n \to \infty} \frac{\sqrt[n]{n!} }{n}

Here we can use Stirling's approximation, which says that for large values of n, we get:

n! = \sqrt{2*\pi*n} *(\frac{n}{e} )^n

Because here we are taking the limit when n tends to infinity, we can use this approximation.

Then we get.

\lim_{n \to \infty} \frac{\sqrt[n]{n!} }{n} = \lim_{n \to \infty} \frac{\sqrt[n]{\sqrt{2*\pi*n} *(\frac{n}{e} )^n} }{n} =  \lim_{n \to \infty} \frac{n}{e*n} *\sqrt[2*n]{2*\pi*n}

Now we can just simplify this, so we get:

\lim_{n \to \infty} \frac{1}{e} *\sqrt[2*n]{2*\pi*n} \\

And we can rewrite it as:

\lim_{n \to \infty} \frac{1}{e} *(2*\pi*n)^{1/2n}

The important part here is the exponent, as n tends to infinite, the exponent tends to zero.

Thus:

\lim_{n \to \infty} \frac{1}{e} *(2*\pi*n)^{1/2n} = \frac{1}{e}*1 = \frac{1}{e}

7 0
3 years ago
$3.00 is ____ % of $1.80
natta225 [31]
1.666666666666667%

3.00/1.80


1.666666666666667 as a fraction is 5/3
8 0
4 years ago
Which of the following comparisons is FALSE?
dybincka [34]

Answer:

A

Step-by-step explanation:

Let's check each one-by-one.

a.

we know 3.79 liters is 1 gallon, so 4 liters IS NOT LESS THAN 1 gallon

THis is false.

b.

We know 1 feet is 0.30 meters, so definitely 1 foot is less than 1 meter.

This is true.

c.

we know around 28.35 grams is 1 ounce, so definitely 25 grams is less than 1 ounce.

THis is true.

d.

We know 1 km is approximately 0.62 miles so 10 km would be around 0.62*10 = 6.2 miles

So definitely 9 miles IS GREATER than 10 km.

THis is true.

So answer choice A is false, only.

4 0
3 years ago
Find the lengths of side BC.<br> Give your answer to 3 significant figures.
Alinara [238K]

Step-by-step explanation:

since we are required to find side |BC| and the value of side |AB| is given as 6.3 cm

hence we find the cosine of the given angle...

cos71 = adjacent ÷ hypotenuse

cos71 = |AB| ÷ |BC|

cos 71 = 6.3 ÷ |BC|

|BC| = 6.3 ÷ 0.325

|BC| = 19.4 cm

4 0
3 years ago
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