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SpyIntel [72]
3 years ago
15

Qual é a posição relativa entre as retas y = 2x + 5 e y = -4x + 1

Mathematics
1 answer:
nadezda [96]3 years ago
6 0
I think the answer is -3
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Suppose that a sample of size 100 is to be drawn from a population with standard deviation L0. a. What is the probability that t
NARA [144]

Answer:

The probability that the sample mean will lie within 2 values of μ is 0.9544.

Step-by-step explanation:

Here

  • the sample size is given as 100
  • the standard deviation is 10

The probability that the sample mean lies with 2 of the value of μ is given as

                                            P(| \bar{X}-\mu|

Here converting the values in z form gives

P(-2

Substituting values

P(-2

From z table

P(z\leq 2)=0.9772\\P(z\leq -2)=0.0228\\P(-2\leq z\leq 2)=P(z\leq 2)-P(z\leq -2)\\P(-2\leq z\leq 2)=0.9772-0.0228\\P(-2\leq z\leq 2)=0.9544\\

So the probability that the sample mean  will lie within 2 values of μ is 0.9544.

5 0
3 years ago
How to simplify this?<br>(3a-b)+2a
taurus [48]

Combine like terms

3a + 2a = 5a

5a - b

5a - b is your answer

hope this helps

4 0
2 years ago
Read 2 more answers
Using that formula
d1i1m1o1n [39]

20% x 50 =(20 / 100) x 50 = (20 x 50) / 100 = 1000 / 100 = 10

answer is 10

8 0
3 years ago
Read 2 more answers
Try solving 2 divided by 3 and tell me whether the answer is repeating or stoped and show YOUR WORK of you got the answer.
mrs_skeptik [129]
I got a repeating answer as well.
8 0
3 years ago
Which expressions are equivalent to 3(6+b)-(2b + 1)?
Anna [14]

Answer:

18+3b-2b-1

b+17

Step-by-step explanation:

\mathrm{Using\:the\:distributive\:law}:\quad \:-\left(a+b\right)=-a-b

-\left(2b+1\right)=-2b-1

=3\left(6+b\right)-2b-1

=18+3b-2b-1

\mathrm{Group\:like\:terms}

=3b-2b+18-1

\mathrm{Subtract\:the\:numbers:}\:18-1=17

=3b-2b+17

\mathrm{Add\:similar\:terms:}\:3b-2b=b

=b+17

[RevyBreeze]

7 0
2 years ago
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