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kramer
3 years ago
8

What is the negative exponent of 1 / 49

Mathematics
1 answer:
jekas [21]3 years ago
6 0
I think 1 / 7 x 7 is the correct answer
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Factorize 225-49<br><img src="https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B2%7D%20" id="TexFormula1" title=" {x}^{2} " alt=" {x}^{2}
erica [24]

225-49x^2

-49x^2+225

=(7x+15)(-7x+15)

7 0
3 years ago
Read 2 more answers
The sample space of a random experiment is {a, b, c, d, e} with probabilities 0.1, 0.1, 0.2, 0.4, and 0.2 respectively. Let A de
antoniya [11.8K]

Answer:

a) P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4

b) P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8

c) P(A') = 1-P(A) =1-0.4=0.6

d) P(A \cup B) =0.4 +0.8-0.2 =1.0

e)  The intersection between the set A and B is the element c so then we have this:

P(A \cap B) = P(c) =0.2

Step-by-step explanation:

We have the following space provided:

S= [a,b,c,d,e]

With the following probabilities:

P(a) =0.1, P(b)=0.1, P(c) =0.2, P(d)=0.4, P(e)=0.2

And we define the following events:

A= [a,b,c], B=[c,d,e]

For this case we can find the individual probabilities for A and B like this:

P(A) = 0.1+0.1+0.2 = 0.4

P(B) =0.2+0.4+0.2=0.8

Determine:

a. P(A)

P(A) =P(a)+P(b) +P(c)= 0.1+0.1+0.2 = 0.4

b. P(B)

P(B) =P(c) +P(d)+P(e)=0.2+0.4+0.2=0.8

c. P(A’)

From definition of complement we have this:

P(A') = 1-P(A) =1-0.4=0.6

d. P(AUB)

Using the total law of probability we got:

P(A \cup B) =P(A) +P(B)-P(A \cap B)

For this case P(A \cap B) = P(c) =0.2, so if we replace we got:

P(A \cup B) =0.4 +0.8-0.2 =1.0

e. P(AnB)

The intersection between the set A and B is the element c so then we have this:

P(A \cap B) = P(c) =0.2

8 0
3 years ago
Math: hey everyone, can anyone help me find the answer for this math question? I don’t quite understand but yea the picture is t
Karo-lina-s [1.5K]

Answer:

4 1/3

I hope this helps

6 0
3 years ago
Why might algebra tiles not be a good tool to use to factor x2 + 18x + 80?
kvasek [131]
<span>
factor a trinomial to (10+x) (8+x)
 hope it helps</span>
7 0
3 years ago
If you change the the sign of a points y coordnate from positive to negative,how will the location of the point change
Nat2105 [25]

Answer:

Because Point X Will Change After Point Y Changes

Step-by-step explanation:

3 0
3 years ago
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