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dimaraw [331]
4 years ago
10

Which of the following is equivalent to tan(44˚)+tan(55˚)1−tan(44˚)tan(55˚)?

Mathematics
1 answer:
pogonyaev4 years ago
7 0

Answer:

  tan(99°)

Step-by-step explanation:

It looks like you may have attempted to write the sum of angles formula for tangent. That would be ...

  tan(α+β) = (tan(α) +tan(β))/(1 -tan(α)tan(β)) . . . . . . . parentheses are required

Your expression seems to match this for α = 44° and β = 55°. So, the equivalent is ...

  tan(44°+55°) = tan(99°)

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Given a set of data sorted from smallest to largest, define the first, second, and third quartiles.
Nikolay [14]

Answer:

Step-by-step explanation:

Given a set of data sorted from smallest to largest, i.e. arranged in ascending order we are to find out the median, I and III quartiles

We know that the median is the middle entry of data arranged in ascending order

Q1 is the entry below which 25% lie and Q3 is one above which 25% lie

Hence proper definition would be

d. The first quartile is the median of the lower half of the data below the overall median.

The second quartile is the overall median

The third quartile is the median of the upper half of the data above the overall median.

Option b is wrong becuase mean is not necessary here.  Option a is wrong because this has nothing to do with std deviation

Option c is wrong since minimum value cannot be q1

Option e is wrong because we have exactly 25% lie below Q1

4 0
3 years ago
Give the most accurate name for this figure
anyanavicka [17]

Answer:

Equilateral Triangle

geometric shapes equilateral triangle

Equilateral triangles have all angles equal to 60° and all sides equal length.

All equilateral triangles have 3 lines of symmetry.

Isoscles Triangle

Isosceles triangle

Isosceles triangles have 2 angles equal and 2 sides of equal length.

All isosceles triangles have a line of symmetry.

Scalene Triangle

scalene triangle

Scalene triangles have no angles equal, and no sides of equal length.

Right Triangle

right triangle or right angled triangle

Right triangles (or right angled triangles) have one right angle (equal to 90° ).

Obtuse Triangle

obtuse triangle

Obtuse triangles have one obtuse angle (an angle greater than 90° ). The other two angles are acute (less than 90° ).

Acute Triangle

acute triangle

Acute triangles have all angles acute.

Only cause i dont see a figure

8 0
3 years ago
There are 380 students who are enrolled in an introductory engineering course. If there are seven boys to every three girls, how
LuckyWell [14K]
Answer:
266 boys

Explanation:
Every 3 girls, there are 7 boys. This means there’s 7 boys out of 10 students total.
7/10 = x/380
x=266

Hope this helps
3 0
3 years ago
Bernie played 3 rounds of golf, and the mean of his score was 78. If his lowest score was 74, what is the greatest possible valu
zmey [24]

Answer:

85.

Step-by-step explanation:

Let x represent Bernie's highest score.

We have been given that Bernie played 3 rounds of golf, and the mean of his score was 78. His lowest score was 74.

Since Bernie's lowest score is 74, so we can assume that his score on 2nd round would be 75.

Now, we will use mean or average formula to solve our given problem.

\text{Mean}=\frac{\text{Sum of all data points}}{\text{Number of data points}}

78=\frac{74+75+x}{3}

Let us solve for x.

78\cdot 3=\frac{74+75+x}{3}\cdot 3

234=74+75+x

234=149+x

x=234-149

x=85

Therefore, the greatest possible value of his highest score would be 85.

5 0
3 years ago
PLEASE HELP WITH THIS ONE QUESTION
Semmy [17]

The 1st graph is the answer.

8 0
2 years ago
Read 2 more answers
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