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2 years ago

During the summer, Bethany mows lawns and Grant is a waiter at a coffee

Mathematics

1 answer:

joja [24]2 years ago

6 0

Both of them could be true, tables and graphs are basically the same thing... is there a photo?

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Help with this number 3)is 2×=-8

IRISSAK [1]

2x= -8
2x/2=-8/2
X= -4

6 0

3 years ago

6x<br>:64=18:32<br><br>pls helo me am stuck

zalisa [80]

Answer:

384

Step-by-step explanation:

I think its 384 I say I think

4 0

3 years ago

2(b+3)=2 solve and check solution

Alexxandr [17]

2(b+3) = 2
2b + 6 = 2 ( -6 )
2b = -4 ( / 2)
b = -2

5 0

3 years ago

20 points!

Arte-miy333 [17]

Answer:

Step-by-step explanation:

hypotenuse=2*AB

where AB is the smallest side.

Take AB as the base .

Draw a perpendicular at B.

A as the center and cut an arc AC=2 AB

Join AC.

CAB is the reqd. triangle.

5 0

2 years ago

Suppose a simple random sample of size nequals36 is obtained from a population with mu equals 74 and sigma equals 6. (a) Descri

OlgaM077 [116]

Part a)

The simple random sample of size n=36 is obtained from a population with

$\mu = 74$

and

$\sigma = 6$

The sampling distribution of the sample means has a mean that is equal to mean of the population the sample has been drawn from.

Therefore the sampling distribution has a mean of

$\mu = 74$

The standard error of the means becomes the standard deviation of the sampling distribution.

$\sigma_ { \bar X } = \frac{ \sigma}{ \sqrt{n} } \\ \sigma_ { \bar X } = \frac{ 6}{ \sqrt{36} } = 1$

Part b) We want to find

$P(\bar X \:>\:75.9)$

We need to convert to z-score.

$P(\bar X \:>\:75.9) = P(z \:>\: \frac{75.9 - 74}{1} ) \\ = P(z \:>\: \frac{75.9 - 74}{1} ) \\ = P(z \:>\: 1.9) \\ = 0.0287$

Part c)

We want to find

$P(\bar X \: < \:71.95)$

We convert to z-score and use the normal distribution table to find the corresponding area.

$P(\bar X \: < \:71.95) = P(z \: < \: \frac{71.9 5- 74}{1} ) \\ = P(z \: < \: \frac{71.9 5- 74}{1} ) \\ = P(z \: < \: - 2.05) \\ = 0.0202$

Part d)

We want to find :

$P(73\:$

We convert to z-scores and again use the standard normal distribution table.

$P( \frac{73 - 74}{1} \:< \: z$

5 0

3 years ago