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Elan Coil [88]
3 years ago
5

In algebra, we use a(n) __to represent a variable. Answer here

Mathematics
1 answer:
Vlada [557]3 years ago
3 0

Answer:

x or another letter

Step-by-step explanation:

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Rewrite the the expression using as few terms as possible. X^2+5x+4x+20
Effectus [21]

Answer:

x^2 + 9x + 20

Step-by-step explanation:

x^2 + 5x + 4x + 20

x^2 + 9x + 20

all u have to do is combine liked terms

8 0
3 years ago
What is the value of sin-1(1)? negative startfraction pi over 2 endfraction 0 startfraction pi over 2 endfraction π
mariarad [96]

The value of sin-1(1) is negative startfraction pi over 2 endfraction, startfraction -pi over 2 endfraction.

<h3>What is the value of sin (π/2)?</h3>

The value of sin (π/2) is equal to the number 1. The value of the sin-1(1) has to be find out.

Suppose the value of this function is <em>x</em>. Thus,

x=\sin^{-1}(1)

Solve it further,

\sin(x)=(1)              ......1

The value of sin (π/2) and -sin (-π/2) is equal to 1 such that,

\sin\dfrac{\pi}{2}=-\sin\left(-\dfrac{\pi}{2}\right)=1

Put this value in the equation 1,

\sin(x)=\sin\left(\dfrac{\pi}{2}\right)=-\sin\left(-\dfrac{\pi}{2}\right)

Thus, the range will be,

\left(\dfrac{\pi}{2},-\dfrac{\pi}{2}\right)

Thus, the value of sin-1(1) is negative startfraction pi over 2 endfraction, startfraction -pi over 2 endfraction.

Learn more about the sine values here;

brainly.com/question/10711389

3 0
2 years ago
Answer Choices for picture below:
Nat2105 [25]

Answer:

Your answer: 5.(4,-4)

Step-by-step explanation:

Please mark brainliest and have a nice night/day!!

6 0
3 years ago
Students in a class have to choose 4 out of 7 people who were nominated for the student council. How many different groups of st
Lady_Fox [76]

Answer:

35

Step-by-step explanation:

3 0
3 years ago
How many numbers of the set {1, 2, 3, 4, . . . , 297, 298, 299, 300} are multiples of 10 but not multiples of 15?
slega [8]

Answer:

I get 20

Step-by-step explanation:

While there probably is some logical way to go about this I just did it in excel

screenshot below

5 0
3 years ago
Read 2 more answers
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