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docker41 [41]
3 years ago
8

An angle is a right angle if and only if it measures 90

Mathematics
2 answers:
Nuetrik [128]3 years ago
5 0
An angle is a right angle when it measures only 90 degrees.
adoni [48]3 years ago
4 0
Only right angles measure 90 degrees.

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Which table represents y as a function of x?
dimulka [17.4K]

Answer:

Second option?

Step-by-step explanation:

I would go with the second one. It cannot be the first one because a function must have one y value per each x, but in this case it does not. Same reason for option 3 and 4. Am I right? Please let me know :)

7 0
2 years ago
A local company wants to evaluate their quality of service by surveying their customers.
stich3 [128]

Answer: b. 0.98

Step-by-step explanation:

The formula to find the maximum error of the estimated mean :

E=z^*\dfrac{\sigma}{\sqrt{n}}            (1)

, where \sigma = standard deviation

n= Sample size

z* = Critical z-value.

As per given , we have

\sigma=5

n=100

Critical value for 95% confidence interval = z*=1.96

Put these values in the formula (1), we get

E=(1.96)\dfrac{5}{\sqrt{100}}

E=(1.96)\dfrac{5}{10}=0.98

Hence, the maximum error of the estimated mean quality for a 95% level of confidence is 0.98.

Therefore , the correct answer is b. 0.98 .

6 0
3 years ago
Read 2 more answers
A bee flies at 10 feet per second directly to a flower bed from its hive. The bee stays at the flower bed for 13 minutes, and th
rosijanka [135]

Answer:

barbilat hahaha

baho bilat

7 0
3 years ago
A pool in the shape of a rectangular prism is being filled with water. The length and width of the pool is 24 feet and 15 feet.
Marina86 [1]

Answer:

40,680

Step-by-step explanation:

plz give me brainliest

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6 0
3 years ago
You buy a lottery ticket to a lottery that costs $10 per ticket. There are only 100 tickets available to be sold in this lottery
riadik2000 [5.3K]

Answer:

Loss of $1.20

Step-by-step explanation:

The possible outcomes for this lottery and their probabilities are:

- a 1 in 100 chance of winning $450

- a 2 in 100 chance of winning $120

- a 4 in 100 chance of winning $30

- a 93 in 100 chance of losing $10

Therefore, the expected value of this lottery when buying one ticket is:

E(X) = \frac{1}{100}*\$450+ \frac{2}{100}*\$120+ \frac{4}{100}*\$30-\frac{93}{100}*\$10 \\E(X) = -\$1.2

Therefore, you are expected to lose $1.2 per ticket.

3 0
3 years ago
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