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lakkis [162]
3 years ago
8

I need help with this graph?!

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
6 0
The answer would be D
Anastasy [175]3 years ago
4 0

Answer:

Im pretty sure its D. all numbers greater than or equal to -3

Step-by-step explanation:

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A school teacher is worried that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the s
marin [14]

Answer:

H0 ; μ ≤ 4 pCi/L

Ha ; μ > 4 pCi/L

The null hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is less than or equal to the safe level of 4pCi/L

H0 ; μ ≤ 4 pCi/L

The alternative hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.

Ha ; μ > 4 pCi/L

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

The null hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is less than or equal to the safe level of 4pCi/L

H0 ; μ ≤ 4 pCi/L

The alternative hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.

Ha ; μ > 4 pCi/L

7 0
3 years ago
If 5 ice creams cones cost 20 dollars,<br> how much would 10 ice creams cost?
vitfil [10]

Answer:

The cost of 10 ice-cream cones is <u>40 dollars</u>.

Step-by-step explanation:

Here we have given that the cost of 5 ice-creams cone is 20 dollars. So, finding the cost of 1 ice-cream cone.

:\implies{\tt{Cost  \: of  \: 1 = 20 \div 5}}

:\implies{\tt{Cost  \: of  \: 1 =  \dfrac{20}{5}}}

:\implies{\tt{Cost  \: of  \: 1 =  \cancel{\dfrac{20}{5}}}}

:\implies{\tt{Cost  \: of  \: 1 = \$4}}

Hence, the cost of 1 ice-cream cone is 4 dollars.

Now, we know the cost of 1 ice-cream cone. Thus, finding the cost of 10 ice-cream cones.

:\implies{\tt{Cost  \: of  \: 1 = \$4}}

:\implies{\tt{Cost  \: of  \: 10 = 4 \times 10}}

:\implies{\tt{Cost  \: of  \: 10 = \$40}}

Hence, the cost of 10 ice-cream cones is 40 dollars.

\rule{300}{2.5}

7 0
3 years ago
Add 11/6x and 2/13x<br><br> Add 11/6x and 2/13x
Natalija [7]

Answer:

Hii the correct answeeer is B.

8 0
3 years ago
V-3 -5 - 315<br> O True<br> O False
xxMikexx [17]

Answer:

True

Step-by-step explanation:

Why true I had that problem and it was true.

7 0
3 years ago
Color blindness is an inherited characteristic that is more common in males than females. Let F represent female, and C represen
malfutka [58]

Answer:

0.513 = 51.3% probability of being a female.

Step-by-step explanation:

We are given the following formula:

P(F \cup C) = P(F) + P(C) - P(F \cap C)

In which:

Event F: Female

Event C: Red-green color blindness.

Probability of a Female

We have to find P(F), which is given by:

P(F) = P(F \cup C) + P(F \cap C) - P(C)

We are given by:

P(C) = 0.039, P(F \cap C) = 0.004, P(F \cup C) = 0.548

So

P(F) = P(F \cup C) + P(F \cap C) - P(C) = 0.548 + 0.004 - 0.039 = 0.513

0.513 = 51.3% probability of being a female.

5 0
3 years ago
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