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Reil [10]
3 years ago
11

What does z= ? I need the answer asap, help plsss !

Mathematics
2 answers:
Stella [2.4K]3 years ago
7 0

Answer:

D) 51

Step-by-step explanation:

Form an equation to find z:

tan(z)=10/8

tan^-1(tan(z))=tan^-1(10/8)

z=51.34

So the correct choice is D

Marrrta [24]3 years ago
3 0

Answer:

51

Step-by-step explanation:

tan(z) = 10/8

z = (tan^-1)(1.25)

z = 51.3401917459

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It takes approximately 4.65 quarts of milk to make a pound of cheese. Express this amount as a mixed number in simplest form.
ikadub [295]
The correct answer would be 4 and 13/20
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3 years ago
In a statistics​ class, the standard deviation of the heights of all students was 3.8 inches. The standard deviation of the heig
goblinko [34]

Answer:

The reason why standard deviation of the entire class is greater than standard deviation of males and females considered separately, is that mean values for males and females are different from each other.

Step-by-step explanation:

The concept of mean is well represented by the following formula

mean = \frac{(x1 + x2 + x3 + ..... + xn)}{N}, where x1, x2, xn are the observations and N is the number of observations (population).

Standard deviation represents the distance between each observation and the mean of the population (all observations). The formula for this parameter is:

Standard deviation =√[((x1 - x)² + (x2-x)² + ....+ (xn-x)²)/N-1], where x1, x2,..., xn are the observations and x is the mean value.

In this case you have that each height registered is an observation and the number of observations represents the N value. As you can see if the mean for males is different from that of females their standard deviation will be different too. Usually males have heigths greater than that of females (1.77 vs 1.64, in USA for example), and heights inside each group will be more similar than between groups. Then, when you mix all observation there will be an increase in standard deviation, because you are mixing very different heigths

4 0
3 years ago
Does 2x+4=3x+1/2 have one solution or more or none?
Contact [7]

Answer:

one solution the solution being ×=7/2

Step-by-step explanation:

one solution

3 0
2 years ago
Look at this set of 5 numbers: 21471 By how much would the mode decrease if the number 1 were added to the set?
Fofino [41]

Answer:

  • Zero

Step-by-step explanation:

The mode is the number of most repeated data in the set.

Given set 2, 1, 4, 7, 1 has mode 1 (repeated twice).

If we add 1 to the set the mode will remain 1 as it will repeat three times, so the mode won't change.

There is no change in mode, so the mode decrease is zero.

6 0
2 years ago
Please helpppppp i have trouble with math
Andrej [43]

Answer:

6

Step-by-step explanation:

a right triangle's area is half of a square's.

(4*3)/2

6

6 0
2 years ago
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