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olga nikolaevna [1]
3 years ago
5

Math help! Question 5

Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

a. 4 teachers b. 58 students c. 62 people

Step-by-step explanation:

multiply 80 by 0.05, you get 4.

Multiply 1160 by 0.05, you get 58.

Add 80 and 1160 together, you get 1240. Multiply 1240 by 0.05, you get 62.

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In parts ​(a) through ​(e)​ below, mark the given statement as True or False. Justify each answer. All vectors are in set of rea
Oxana [17]

Answer:

(c)

"The given statement is true, by definition of length of a vector v, ||v|| = \sqrt{v\bullet v}"

Step-by-step explanation:

(a) v  \bullet v = || v ||^2

That is completely correct Remember that if  v = (x_1,x_2,x_3)\\ then

v \bullet v = x_1*x_1+x_2*x_2+x_3*x_3 = x_1^2+x_2^2+x_3^2 = ||v||^2

Therefore the correct answer would be (c).

"The given statement is true, by definition of length of a vector v, ||v|| = \sqrt{v\bullet v}"

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3 years ago
Whats the answer for this
drek231 [11]

Answer:

50/18 or 2.77

Step-by-step explanation:

So first u have to make the 3 1/3 and 1 1/5 into improper fractions.

Then, you can do the keep, change, flip thing and then u get 10/3 x 5/6 to get 50/18

7 0
2 years ago
Read 2 more answers
What is 15/y+11 - 10/y+3 = 0
Scrat [10]
15/y+11-10/y+3=0
15/y-10/y=5/y  11+3=14
5/y+14=0
o-14=-14
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3 0
3 years ago
Read 2 more answers
A cup, when full, contains 3/10 litres of
AnnyKZ [126]

Answer:

The answer is 30. 9 divided by 0.3 is 30.

6 0
3 years ago
The observations of 124.53, 124.55, 142.51, and 124.52 are obtained when taping the length of a line. What should the observer c
mylen [45]

Answer: the observer should consider to eliminate or to retake the third measure.

Explanation:

The four measures taken are 124.53, 124.55, 142.51 and 124.52.

As it can be easily seen, the third measure is much different from the other three. This means that something went wrong during the observation: it can be either the measure taken wrong or that the number was written wrong (if you switch the 2 and the 4 you get a number similar to the other ones).

If the third measure is not considered, an estimate of the mean would place it around 124.5, while if the outlier (the detatched number) is considered an estimate of the mean would increase to about 129.

Therefore, in order to obtain a more reliable mean, the observer should consider to eliminate or to retake the third measure.

6 0
3 years ago
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