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4 years ago

Dr. evans just started an experiment. He will collect data for 7 days. How many hours is this?

Mathematics

2 answers:

Zina [86]4 years ago

8 0

7days•24hours=168 total hours
i hope this helps!

Serhud [2]4 years ago

5 0

Answer:

168 hours

Step-by-step explanation:

Since there are 24 hours in 1 day, and he collected data for 7 days, then you have to multiply 7 by 24. 7 times 24=168. So the answer would be 168 hours.

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Which of the following gives all of the sets that contain sqare root 9

Tems11 [23]

Answer:

4. the set of all natural numbers, the set of all whole numbers, the set of all integers, the set of all rational numbers, and the set of all real numbers

Step-by-step explanation:

√9 = 3

3 is every kind of number except irrational. It belongs to the sets of ...

natural numbers
whole numbers
integers
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4 years ago

What are the factors of 63

Gemiola [76]

Answer:

1,3,7,9,21,63,

Step-by-step explanation:

63*1=63

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3 years ago

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If you roll two fair six-sided dice, what is the probability that the sum is 5 or lower?

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The possible combination are
2=1+1
3=1+2; 2+1
4=1+3; 2+2; 3+1

So the probability is 6/36=1/6

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3 years ago

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a cell phone and phone case cost 110$ in total. the cell phone costs 100$ more than the phone case. How much was the cell phone?

Flauer [41]

Answer:

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3 years ago

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Find the value of the variable(s). If your answer is not an integer, leave it in simplest radical form.

Georgia [21]

Answer:

Step-by-step explanation:

First, let's find x.

We know that one of the angles is 30. The side opposite to than angle is 11, and x is the adjacent side to it. Therefore, we can use the trig function tangent.

Recall that:

$\tan(x)=opp/adj\\$

Plug in 30 for the angle, 11 for the opposite, and x for the adjacent. Solve for x by cross-multiplying:

$\tan(30)=11/x\\x\tan(30)=11\\x=11/\tan(30)$

From the unit circle, recall that tan(30) is equal to one over the square root of 3. Thus:

$x=11/(1/\sqrt3)\\x=11\cdot\sqrt3\\x=11\sqrt3$

Now, we can use the Pythagorean Theorem to find y. y is the hypotenuse. Thus:

$c^2=a^2+b^2\\c^2=(11\sqrt3)^2+11^2\\c^2=121(3)+121\\c^2=4(121)\\c^2\sqrt{4(121}=2(11)=22$

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3 years ago