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allsm [11]
3 years ago
5

30% of what number equals 9

Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

The number is 30

Step-by-step explanation:

Of means multiply and is means equals

30% * N = 9

Change to decimal form

.3 * N = 9

Divide each side by .3

.3/.3 *N = 9/.3

N = 30

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I need help on a question i don't know!
user100 [1]

Answer:

20:4

Step-by-step explanation:

got it for u

5 0
2 years ago
RESOLVER LOS SIGUIENTES SISTEMAS DE ECUACIONES APLICANDO EL METODO DE SUSTITUCION
kiruha [24]

Answer:

x = 1/2; y = 1/3

Step-by-step explanation:

2x + 3y = 2     Eq. 1

-6x + 12y = 1     Eq. 2

Eq. 1

2x + 3y = 2

2x = -3y + 2

x = -3/2 y + 1

Eq. 2

-6x + 12y = 1

De Eq. 1 sabemos que x = -3/2 y + 1

-6x + 12y = 1

-6(-3/2 y + 1) + 12y = 1

9y - 6 + 12y = 1

21y - 6 = 1

21y = 7

y = 7/21

y = 1/3

Eq. 1

2x + 3y = 2

2x + 3(1/3) = 2

2x + 1 = 2

2x = 1

x = 1/2

Respuesta: x = 1/2; y = 1/3

3 0
3 years ago
Matlab a farmer wishes to build a rectangular pen for his animals out of 40 feet of fencing what should be the length and width
ASHA 777 [7]
Width=w
length=(40-2w)/2=20-w
A=w(40-w)
A=40w-w²
A'=40-2w=0
2w=40
w=20

20x20 is the size of the pen having the greatest area. this tells us the largest rectangle for a given perimeter is a square
8 0
3 years ago
What is 1 1/2 mi in feet
Serga [27]

1 1/2 miles in feet is 7920
8 0
3 years ago
Read 2 more answers
What is the y-intercept of y = 1 + 6x?
Tcecarenko [31]

Answer:

Hey!

Your answer is 1 (the y-intercept is 1)

Step-by-step explanation:

x-intercept =  ( − 1/ 6  , 0 )

y-intercept =  ( 0 , 1 )

Explanation:

Slope formula is

=  r i s e/ r u n

 Since 6 is obviously  6/ 1 then...

we know that the slope goes up 6 units

and right 1 unit on a graph.  

Next we have  to find the y-intercept of the line

of y=6x+1, you substitute x as x=0.

y = 6

x + 1

y = 6 ( 0 ) + 1

so then y = 1

HOPE THIS HELPS!!

8 0
3 years ago
Read 2 more answers
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