All categories

3 years ago

Determine the number of real solutions of the equation. Then solve the equation using square roots

Mathematics

1 answer:

Kaylis [27]3 years ago

8 0

Answer:

x ∉ R

Step-by-step explanation:

x² = - 21

if x² < 0 => x ∉ R

You might be interested in

There is a special at the store: $61 for 10 roses. Larry is trying to figure out if it's a good deal. Help Larry figure out the

Law Incorporation [45]

Answer:

$6.10 per rose, i would say that it is not the best deal.

Hope this helps!!

3 0

3 years ago

Which graph shows the solution to the system of linear inequalities? Y< 1/3x-1 y<1/3-3

nadezda [96]

I think the best answer would probably be 1

3 0

3 years ago

PLEASE HELP RIGHT AWAY

Angelina_Jolie [31]

Answer:

12 flips

Step-by-step explanation:

4 0

3 years ago

Jim sells used drones for 70% of the original manufacturer's purchase price of a new drone. Jim also sells new drones for 15% mo

adell [148]

The function for the amount saved if they purchase a used drone rather than a new drone from Jim's store is f(x) = 0.45x

He sells used drones at 70% of the price (x).

So, the selling price of a used drone is:

$\mathbf{Used = 70\% \times x}$

Express percentage as decimal

$\mathbf{Used = 0.7 \times x}$

$\mathbf{Used = 0.7x}$

Also, he sells new drones at 15% more of the price (x).

So, the selling price of a new drone is:

$\mathbf{New= (1 + 15\%) \times x}$

Express percentage as decimal

$\mathbf{New= (1 + 0.15) \times x}$

$\mathbf{New= 1.15 \times x}$

$\mathbf{New= 1.15x}$

The amount saved is the difference between the prices of the drones.

So, we have:

$\mathbf{Saved =New - Old}$

This gives

$\mathbf{Saved =1.15x- 0.7x}$

Subtract

$\mathbf{Saved =0.45x}$

Express as a function

$\mathbf{f(x) = 0.45x}$

Hence, the function for the amount saved is f(x) = 0.45x