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Leokris [45]
2 years ago
15

11. The equation T = 0.63s + 78 can be used to determine T, the temperature in degrees, inside an oven s seconds after the oven

is turned on. Which statement relative to this equation is true?
A) Each second the temperature increases by 78 degrees.



B) Each second the temperature increases by 63 degrees.



C) The temperature inside the oven increases by 63 degrees every 78 seconds.



D) The temperature inside the oven increased by 78 degrees every 64 seconds.

13. What does a correlation coefficient of r = - 0.97 generally imply about the graph of a data set?
A) The slope is positive, and a linear model is a good fit for the data.



B) The slope is negative, and a linear model is a good fit for the data.



C) The slope is positive, and a linear model is NOT a good fit for the data.



D) The slope is negative, and a linear model is NOT a good fit for the data.
Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
7 0
I think the second one is b
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Which expressions are equivalent to RootIndex 3 StartRoot 128 EndRoot Superscript x? Select three correct answers.
vodka [1.7K]

Answer:

<h3>- 128 Superscript StartFraction 3 Over x EndFraction </h3><h3>- (4RootIndex 3 StartRoot 2 EndRoot)x </h3><h3>- (4 (2 Superscript one-third Baseline) ) Superscript x</h3><h3>Step-by-step explanation:</h3>

Given the indicinal equation (\sqrt[3]{128} )^{x}\\

According to one of the law of indices,

(\sqrt[a]{m} )^{b}\\= (\sqrt{m})^\frac{b}{a}

Applying this law to the question;

(\sqrt[3]{128} )^{x}\\ = {128} ^\frac{x}{3}\\ \\= (\sqrt[3]{64*2})^{x} \\ = (4\sqrt[3]{2})^{x} \\= (4(2^{1/3} )^{x} )

The following are therefore true based on the following calculation

128 Superscript StartFraction 3 Over x EndFraction

(4RootIndex 3 StartRoot 2 EndRoot)x

(4 (2 Superscript one-third Baseline) ) Superscript x

5 0
2 years ago
Read 2 more answers
The volume of a sphere is 5,000pi m3. What is the surface area of the sphere to the nearest square meter?
tia_tia [17]
Surface area of a sphere = <span>4π<span>r2</span></span>
 the volume of a sphere= <span><span>43</span>π<span>r3</span></span>
 so <span>5000π=<span>4/3</span><span>πr3
</span></span><span>> r^3 = 5000 x 3 / 4 =>
 r^3 = 3750
</span>taking cube root on both sides
r=15.53616
hope it helps
5 0
2 years ago
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For flights from a particular airport in January, there is a 30 percent chance of a flight being delayed because of icy weather.
lyudmila [28]

Answer:

0.335

Step-by-step explanation:

1. There is a 30 percent chance of a flight being delayed because of icy weather ,then the probability of being delayed is 0.3 and of being not delayed is 0.7.

2. If a flight is delayed because of icy weather, there is a 10 percent chance the flight will also be delayed because of a mechanical problem, then the probability of being delayed is 0.1 and the probabilty of not being delayed is 0.9.

3. If a flight is not delayed because of icy weather, there is a 5 percent chance that it will be delayed because of a mechanical problem (MP), then the probability of being delayed is 0.05 and the probabilty of not being delayed is 0.95. (See attached probability tree)

Delayed of icy weather - 0.3

Delayed of MP when weather is not icy - 0.7·0.05=0.035

Now, if one flight is selected at random from the airport in January, the probability that the flight selected will have at least one of the two types of delays is

0.3+0.035=0.335

8 0
2 years ago
Verify the continuity type C° and C1 between curve(l) and curve(2).
Damm [24]

Step-by-step explanation:

to be honest I'm not sure how to do

Comment

6 0
2 years ago
Five people each working 8 hrs a day can assemble 400 toys in a 5 day work week. what is the average number of toys per person?
wariber [46]

Answer:

a

Step-by-step explanation:

6 0
2 years ago
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