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3 years ago

X/5=1/(x+4) solve for x

Mathematics

1 answer:

solmaris [256]3 years ago

6 0

ANSWER:

X is -5 and 1.

1) cross multiply

2) subtract five from both sides

3) factor

4) check for extraneous

5) ask me if you are still confused.

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What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

3x + y = 9 (I)
y = –4x + 10 (II)
------------------------
 $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
-------------------------
simplify by (-1)
 $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ 

-------------------------
 $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$

-------------------------
 $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ 

-----------
 $\boxed{x = 1}$ 

Substitute in equation (I) to find the value of "Y".

3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

6 0

3 years ago

You have to fill in the blank for this one 4/9 divided by blank equals 12

photoshop1234 [79]

For this case, the first thing we must do is define a variable.

We have then:

x: unknown number

We now write the expression that models the problem:

$\frac{\frac{4}{9}}{x} = 12$

From here, we clear the value of x.

We have then:

$\frac{4}{9}=12x$

$\frac{4}{9(12)}=x$

$x=\frac{4}{108}$

$x=\frac{1}{27}$

Answer:

4/9 divided by 1/27 equals 12

6 0

3 years ago

Read 2 more answers

The price of a share of stock started the day at $37. During the day it went down $3, up $1, down $7 and up $4. What was the pri

Oksana_A [137]

It started at $37.

It went down $3.
37 - 3 = 34

It went up 1.
34 + 1 = 35

It went down 7.
35 - 7 = 28

It went up 4.
28 + 4 = 32

The price at the end of the day was $32.

4 0

3 years ago

Allison graphs point P to represent the unit rate in terms of cups of cat food per cat near her house. What are the coordinates

Andru [333]

My GUT is telling me its A.

as you can see the points are in a vertical line going up increasing 2 points to the right vertically..

I think its A.

Please correct me if I'm wrong!

I hope this helped.

7 0

3 years ago

The front of a garage needs to be painted. The total area except for the door will be painted. The door is 1.5 m high and 2 m wi

Sever21 [200]

Answer:

The answer for A is $7.85m^{2}$ .

The answer for B is 4 cans.

The answer of C is $98.

Step-by-step explanation:

A-

Multiply 2.5 by 3.5 and you'll get 8.75 Multiply 3.5 by 1.2 and you'll get 4.2; divide and your answer will be 2.1 Add to 8.75 Get 10.85 Subtract from area of door ( 3m because 1.5 times 2 is 3) and you'll get 7.85

B-

Divide 7.85 by 2.5 and you'll get 3.104; round that and you'll get 4 cans.

C-

Multiply the amount of cans (4) by 24.5. Do this and you'll get $98.

Hope this was helpful!!!

8 0

3 years ago