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3 years ago

HELP PLS I’m rly confused

Mathematics

1 answer:

sasho [114]3 years ago

5 0

bro use a photo math...................

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Convert x2 + y2 -4x = 0 to polar form.

Bingel [31]

Answer:

$r(r-4\cos \theta)=0$

Step-by-step explanation:

We are given the following equation:

$x^2 + y^2 -4x = 0$

We have to convert it into polar form.

We put

$x = r \cos \theta\\y = r\sin \theta$

Putting values, we get:

$x^2 + y^2 -4x = 0\\(r\cos \theta)^2 + (r\sin \theta)^2 - 4(r\cos \theta) = 0\\r^2(\cos^2 \theta + \sin^2 \theta) - 4r\cos \theta = 0\\r^2 - 4r\cos \theta = 0\\r(r-4\cos \theta)=0$

is the required polar form.

7 0

3 years ago

The radius of a circle is 9 centimeters what is the circles circumference

neonofarm [45]

Answer:

56.55

Step-by-step explanation:

C=2πr=2·π·9≈56.54867

6 0

3 years ago

Read 2 more answers

I need help finding the formula..

KiRa [710]

X=first week
y=second week
z=third week
t=fourth week

18 more one 2nd week than 1st
x+18=y
x=y-18

3rd week, 4 less than 2 times as second
z=2y-4

4th week, 92

ttal=382

x+y+z+t=382
sub waht we know
x=y-18
y=y
z=2y-4
t=92

y-18+y+2y-4+92=382
conbine line terms
4y+70=382
minus 70 boht sides
4y=312
divide both sides by 4
y=78

78 customers
for equation read my answer slowly

8 0

3 years ago

Cordell Johnson purchased a snow blower for $237.00 and two bags of rock salt for

skelet666 [1.2K]

Answer:

a.240.15

Step-by-step explanation:

a.240.15

b.12.0075

c.252.1575

3 0

2 years ago

If Abby rolls two number cubes a hundred times, about how many times would she expect a product greater than 10.

alexandr1967 [171]

Answer:

20 times ??

Step-by-step explanation:

6 0

3 years ago