3 years ago

I need help i know the answer i just don't get it

Mathematics

1 answer:

sergejj [24]3 years ago

5 0

Answer: 7

Step-by-step explanation:

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O) x² – 18x - 19 + 20y - y2,

pshichka [43]

Answer:

19x-19+23y

Step-by-step explanation:

add the like terms

7 0

3 years ago

What is the focus of the parabola<br> (y-3)^2=8(x-5)?

tino4ka555 [31]

Hello,

Let's suppose y'=y-3
and x'=x-5
Parabola become y'²=8x' whose focus is (8/4,0)=(2,0)

y=y'+3==>y=0+3=3
x=x'+5==>x=2+5=7
Focus is (7,3)
Rem for parabola y²=kx focus is (k/4,0)

7 0

3 years ago

Will mark brainliest to whoever answers correctly first!!!

IgorLugansk [536]

To find the volume, you do area multiplied by thickness( or height)
In this example, you do (1/2*9*6)*10 which is 270
hope I helped ;)

7 0

3 years ago

Choose the formula for the volume of a rectangular box, V = lwh written in terms of w.

lilavasa [31]

The width of the rectangular box will be 8cm

Given that the formula for calculating the volume of a rectangular box is expressed as:

$V=lwh$

L is the length

w is the width

h is the height

Get the "value of "w

$V = lwh\\w=\frac{V}{lh}$

Given the following parameters

Length l = 3 cm

Volume V = 120cm³

Height = 5cm

Get the width of the box as shown:

$w=\frac{V}{lh}\\w=\frac{120}{3\times 5}\\w=\frac{120}{15}\\w= 8cm$

Hence the width of the rectangular box will be 8cm

Learn more here: brainly.com/question/20415942

4 0

3 years ago

Cho đường tròn tâm O , đường kính AB=13cm , CD=12cm và vuông góc với AB tại H

Studentka2010 [4]

Answer:

Step-by-step explanation:

6 0

3 years ago

I need help i know the answer i just don't get it ​

I need help i know the answer i just don't get it