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hoa [83]
2 years ago
11

If cos x = sin(20+x) degrees and 0 degrees < x < 90 degrees, the value of x is

Mathematics
1 answer:
Natalka [10]2 years ago
4 0

Answer:

50

Step-by-step explanation:

Which number is greatest?

2.89 times 10 Superscript negative 8

1.997 times 10 Superscript 2

8.9 times 10 Superscript negative 6

5 times 10 Superscript negative 6

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The number of students in the tutoring center was recorded for 47 randomly selected times. The data is summarized in the frequen
ddd [48]

Using the information given, it is found that the class width for this frequency distribution table is of 1.

In this problem, these following classes are given:

0 – 1 14

2 – 3 1

4 – 5 8

6 – 7 12

8 – 9 12

The classes not given, which are 1 - 2, 3 - 4 and 5 - 6, have values of 0.

The <u>difference between the bounds of the classes is of 1</u>, thus, the class width is of 1.

A similar problem is given at brainly.com/question/24701109

5 0
2 years ago
Which function is a quadratic function? u(x) = –x 3x2 – 8 v(x) = 2x2 8x3 9x y(x) = x2 3x5 4 z(x) = 7x2 2x3 – 3.
Komok [63]

The function u(x)=-x+3x^{2} -8 is a quadratic function due to the highest exponent being 2.

Given functions are:

u(x)=-x+3x^{2} -8

v(x)=2x^{2} +8x^3+9x

y(x)=x^{2} +3x^5+4

z(x) =7x^{2} +2x^3-3

<h3>What is a quadratic function?</h3>

A function of the form f(x)=ax^{2} +bx+c with a\neq 0 is called a quadratic function means the highest exponent of polynomial should be 2.

Let us check one by one.

u(x)=-x+3x^{2} -8

Highest exponent =2

The function is also of form f(x)=ax^{2} +bx+c so u(x) is a quadratic function.

The functions v(x), y(x), and z(x) are having highest exponents as 3,5, and 3 respectively so they are not quadratic functions.

Hence, the function u(x)=-x+3x^{2} -8 is a quadratic function due to the highest exponent being 2.

To get more about quadratic functions visit:

brainly.com/question/1214333

7 0
2 years ago
Could I get some help?
Liono4ka [1.6K]
Vertical angles 2 and 5,  1 and 6, 3 and 8, 7 and 4
linear pair  1 and 5, 5 and 6, 6 and 2, 2 and 1, and also 3 and 7, 7 and 8, 8 and 4, 4 and 3
congruent angles - all vertical pairs are congruent angles
 2 congruent to 5,  1 congruent to 6, 3 congruent to 8, 7 congruent to 4 
8 0
3 years ago
A sandbox has an area of 32 square feet , and the length is 4 1\2 feet. What is the width of the sand box?
victus00 [196]
About 7.1 feet for the answer
4 0
3 years ago
Please explain how you got your answer.
lyudmila [28]

Answer:

1,500 points per minute

Step-by-step explanation:

the first point where lines intersect is at 2,3 meaning at 1 it is 1.5 meaning 1500 points

4 0
2 years ago
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