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shtirl [24]
3 years ago
10

I need help ASAP!!!Thx!!!​

Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

c

Step-by-step explanation:

because i said so

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If x ≠ -2, then 5x2 -20/5x+10 =​
MissTica

Answer:

x-2\, ,x\neq -2

Step-by-step explanation:

So we have the expression:

\frac{5x^2-20}{5x+10}\, ,x\neq -2

For both the numerator and the denominator, factor out a 5:

\frac{5(x^2-4)}{5(x+2)}\, ,x\neq-2

The term in the numerator can be factored. This is the difference of two squares pattern:

\frac{5(x-2)(x+2)}{5(x+2)}\, ,x\neq-2

Both layers have a 5(x+2). Cancel them, Since we know that x <em>cannot</em> be -2, we can safely do so:

x-2\, ,x\neq -2

And we're done!

Notes:

If we weren't told that x ≠ -2, then we cannot divide them because if x <em>did</em> equal -2, the equation would be undefined. However, since we were given that, we can simplify.

However, even if we weren't given x ≠ -2, we can <em>still</em> simplify, but we need to add the restraint ourselves. This must be done, or else the equation won't be correct.

6 0
4 years ago
A construction company is considering submitting bids for two contracts. The company estimates that it has a 20\%20%20, percent
Nostrana [21]

Where the variance is 0.32, the mean is 0.40, and there are provided sets of probabilities, the standard deviation will be 0.566.

<h3>What is standard deviation?</h3>

The average degree of variability in your dataset is represented by the standard deviation. It reveals the average deviation of each statistic from the mean. In general, values with a high standard deviation are spread out from the mean, whereas those with a low standard deviation are grouped together close to the mean.

Here,

mean=0.4

variance=(Xn-mean)².P(x)n

=(0-0.4)²*(0.64)+(1-0.4)²*(0.32)+(2-0.4)²*0.04

variance=0.32

Standard deviation=√(variance)

=√0.32

=0.566

The standard deviation will be 0.566 where variance in 0.32 and mean is 0.40 and given sets of probability.

To know more about standard deviation,

brainly.com/question/13905583

#SPJ4

7 0
1 year ago
Find measure of AEB
Kay [80]
Omg. What grade are you in?
4 0
3 years ago
Write without negative exponets <br> 1/4^-2
dmitriy555 [2]
The rule about negative exponents is that you put the base under "1" in a fraction and the negative exponent becomes positive.  For example, x^{-1} becomes \frac{1}{x}.  So in your case, \frac{1}{4} ^{-2} = \frac{1}{  \frac{1}{4} ^{2} } = \frac{1}{ \frac{1}{16} } =16
5 0
4 years ago
Find an explicit formula for the arithmetic sequence -11, -3, 5, 13, ....
gogolik [260]

Answer:

add 8

Step-by-step explanation:

-11 + 8 = -3

-3 + 8 = 5

5 + 8 = 13

8 0
4 years ago
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