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Wewaii [24]
3 years ago
12

There are 9 classes of 25 students each, 4 teachers, and two times as many chaperones as teachers.

Mathematics
1 answer:
densk [106]3 years ago
8 0

5 buses is the answer pls mark me brainliest

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Explain why a square must be a rectangle but a rectangle does not have to be a square
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Answer:

A rectangle is any four sided shape that has four right angles; Therefore, since a square is a four sided shape that has four right angles and congruent (equal) sides, it always has to be a rectangle. However a rectangle does not always have congruent sides, so it is not necessarily a square.

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the sum is 240 each is 120

Step-by-step explanation:

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What is the volume of the cone?.
larisa86 [58]

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Easy!

Step-by-step explanation:

EDIT: Don't mind this, look down at the comments if you want the answer.

4 0
3 years ago
Write the equation of a parabola having the vertex (1, −2) and containing the point (3, 6) in vertex form. Then, rewrite the equ
In-s [12.5K]
PART A

The equation of the parabola in vertex form is given by the formula,

y - k = a {(x - h)}^{2}

where

(h,k)=(1,-2)

is the vertex of the parabola.

We substitute these values to obtain,


y  + 2 = a {(x - 1)}^{2}

The point, (3,6) lies on the parabola.

It must therefore satisfy its equation.


6  + 2 = a {(3 - 1)}^{2}


8= a {(2)}^{2}


8=4a


a = 2
Hence the equation of the parabola in vertex form is


y  + 2 = 2 {(x - 1)}^{2}


PART B

To obtain the equation of the parabola in standard form, we expand the vertex form of the equation.

y  + 2 = 2{(x - 1)}^{2}

This implies that

y + 2 = 2(x - 1)(x - 1)


We expand to obtain,


y + 2 = 2( {x}^{2}  - 2x + 1)


This will give us,


y + 2 = 2 {x}^{2}  - 4x + 2


y =  {x}^{2}  - 4x

This equation is now in the form,

y = a {x}^{2}  + bx + c
where

a=1,b=-4,c=0

This is the standard form
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3 years ago
BRAINLIEST!!!!!!!!!!!!!!!!!!
xxMikexx [17]

Answer:

x = 71º

Step-by-step explanation:

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