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3 years ago

Which description is paired with its correct expression?

Mathematics

1 answer:

lisov135 [29]3 years ago

8 0

Answer:

A number is twice as much when put added by 4 to equal 12

2x+4=12

Step-by-step explanation:

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Please help with this!

egoroff_w [7]

Answer:

u gotta divide the 7.5% and the other number that is says (can see the question but there)

8 0

3 years ago

The number of games in the first round of a chess tournament is equal to 2×2×2×2×2×2. Write the number of games using an exponen

Naily [24]

Answer:

2^6

Step-by-step explanation:

2 is being multiplied 6 times meaning it would be 2 to the 6th power.

8 0

3 years ago

The other two options are…

Sunny_sXe [5.5K]

It’s B

Explanation: use desmos or trust me lol

8 0

2 years ago

Which of the following describes a chemical change 1. Melting butter 2. Milk spiking 3. Cutting paper 4. Water evaporation

katen-ka-za [31]

Answer:

I'm pretty sure it's number 2 although I think you meant milk spoiling and that's a chemical change

6 0

2 years ago

Read 2 more answers

What is the center of the ellipse x2+5y2–45=0?

jeka94

Answer:

Center is at (0,0)

Step-by-step explanation:

An equation of ellipse in standard form is:

$\displaystyle{\dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2} = 1$

Where center is at point (h,k)

From the equation of $\displaystyle{x^2+5y^2-45=0}$ . First, we add 45 both sides:

$\displaystyle{x^2+5y^2-45+45=0+45}\\\\\displaystyle{x^2+5y^2=45}$

Convert into the standard form with RHS (Right-Hand Side) equal to 1 by dividing both sides by 45:

$\displaystyle{\dfrac{x^2}{45}+\dfrac{5y^2}{45}=\dfrac{45}{45}}\\\\\displaystyle{\dfrac{x^2}{45}+\dfrac{y^2}{9}=1}$

Therefore, the center of ellipse is at (0,0) since there are no values of h and k.

8 0

2 years ago