2 years ago

All functions have a domain of R (all real numbers). True Or False

Mathematics

1 answer:

Veronika [31]2 years ago

4 0

Answer:

True

Step-by-step explanation: Trust me

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PleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeSimplify -2^3

mars1129 [50]

Answer:

Therefore,

$(-2)^{3}=-8$

Step-by-step explanation:

Simplify

-2^3

$(-2)^{3}$

It is read as negative 2 raised to the power three,

also it is the cube of negative 2

we know that $a^{3}$ given as

$a^{3}=a\times a\times a$

so for negative a i.e -a

$(-a)^{3}=-a\times -a\times -a$

substituting a = 2 we get

$(-2)^{3}=-2\times -2\times -2$

negative sign multiplied by odd number of times then the sign remains negative.

Therefore,

$(-2)^{3}=-8$

5 0

3 years ago

one end of a tent is a triangle. the height of the triangle is 1.5 m and the base is 2.5 m. what is the area of the triangle?

Anarel [89]

Answer:

1.5×2.5/2=1.875.

Step-by-step explanation:

We all know that area of triangle is base into hight upon 2.

3 0

1 year ago

What is the total cost of a $12.49 item with a sales tax of 5%?

Ivan

Answer: $13.11

Step-by-step explanation:

hope this helps!

4 0

3 years ago

Solve for x 3(x+2)+4=5x+7

GaryK [48]

Distribute: 3x+6+4=5x+7
Simplify: 3x+10=5x+7
Subtract 3x from both sides: 10=2x + 7
Subtract 7 from both sides: 3=2x
Divide by 2: x=3/2

x=3/2

3 0

3 years ago

Can someone help me this is really confusing????? What is the solution set for the open sentence with the given replacement set?

IgorLugansk [536]

The answer is:

w^2 - 1 = w + 5

3^2 - 1 = w + 5

3^2 = 3(3) = 9

9-1 = 8

8 = 3 + 5

8 = 8

6 0

3 years ago