A school custodian waxed the gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?

Answers

Answer 1

Answer: Hey there, all you do is multiply 20 by 20, 20×20=400. Therefore, the answer is 400 square feet.

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Donna has 8 CDs that she is going to give away. She lets her best friend choose 2 of the 8 CDs. How many different groups of 2 CDs are possible?

Answers

There are 4 different possible group of 2

Answer:

It's 28.

Step-by-step explanation:

Just got this wrong so it showed me the answer.

The coordinates of the focus of the parabola −0.25x2 = y − 2 are:A. (0, 6) B. (0, 1)C. (0, −2)D. (0, 3 )

Answers

Answer:

Option B is right.

Step-by-step explanation:

given is an equation of a parabola

$-0.25x^2 =y-2\ny=-0.25x^2 +2$

$-x^2 =4y-8$

Vertex is (0,2)

It is open down.

Axis of symmetry is x=0 or y axis

Hence focus will lie on axis of symmetry ie y axis.

THe parabola has -4a = -4

Hence a = 1

SO focus will lie inside the parabola on axis of symmetry with a distance of a units from the vertex.

i.e. focus would equal = (0,2-1) = (0,1)

Option B is right

The equation is $-0.25x^2-x+2=0$
The coordinates are $((-b)/(2a);(-\Delta)/(4a))$
$\Delta=b^2-4ac=1+2=3$
The coordinates, thus, are $((1)/(-0.5);(-1)/(-1))=(-2;1)$

(-56)(-90) can someone please help me with this?

Answers

Answer:

5040

Step-by-step explanation:

=(-56)×(-90)

=5040

It is 28/25

Is it math? what kind of subject is it? i can help you :)

Solve the systems of equations by graphing.

Answers

Answer:

I'm not that smart :/

Step-by-step explanation:

Wyatt can husk at least 121212 dozen ears of corn per hour and at most 181818 dozen ears of corn per hour. Based on this information, what is a possible amount of time, in hours, that it could take Wyatt to husk 727272 dozen ears of corn?

Answers

Hi there! :) I believe it is 6 hrs because 12*6=72.

( Mark as brainliest! :) Thanks!)

Hope I helped!

Solve the system of linear equations below.6x + 3y = 33
4x + y = 15

x = 2, y = 7

x = -13, y = 7

x = - 2

3 , y = 12 2

3

x = 5, y = 1

Answers

Asking the Math Gods...

y=7
x=2

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Larrt wants to buy some carpeting for his living room. The length of the room is 2 times the width and the total area of the room is 18 square meters. What is the length of the living room?