Ask question

Ask question

All categories

3 years ago

5

2x + 4 = 4x how. to solve it

2 answers:

ipn [44]3 years ago

8 0

Answer:

x=2

Step-by-step explanation:

2x+4=4x

-2x -2x

4=2x/2x

4/2=x

x=2

Gnoma [55]3 years ago

3 0

Move constant to the right-hand side and change its sign
2x=4x-4
Move the variable to the left hand side and change its sign
2x-4x=-4
Collect the like terms
-2x=-4
Divide both sides by -2
X=2

You might be interested in

What is the difference between 1 and o.1978

Vlad1618 [11]

Answer:

0,8022

Step-by-step explanation:

guess it helped

6 0

3 years ago

PLEASE HELP! A positive number is 1/3 of another number. The sum of the numbers is five less than the square of the larger numbe

antoniya [11.8K]

Answer: The numbers are 1 and 3.

Step-by-step explanation:

Let x = smaller number , y= larger number.

As per given,

$x=\dfrac{y}{3}$ ...(i)

$x+y=y^2-5$ ...(ii)

Put value of x from (i) in (ii)

$\dfrac{y}{3}+y=y^2-5\\\\\Rightarrow\ \dfrac43y=y^2-5\\\\\Rightarrow\ 3y^2-4y-15=0\\\\\Rightarrow\ 3y^2-9y+5y-15=0\\\\\Rightarrow\ 3y(y-3)+5(y-3)=0\\\\\Rightarrow\ (y-3)(3y+5)=0\\\\\Rightarrow\ y=3 \ \ or\ y=\dfrac{-5}{3}$

Since numbers are positive , so y=3 is correct.

And x will be 1 [from (i)]

Hence, the numbers are 1 and 3.

7 0

2 years ago

Zelma buys p pounds of bananas for $0.40 per pound she pays the clerk with a $20 bill the clerk subtract the total cost of the b

Sloan [31]

You didnt include the (presumably) multiple choice answers. My guess is that the answer would be along the lines of: 20 - (P times .40)

7 0

3 years ago

Confusion...help please

kifflom [539]

Given:

In triangle KLM, KL = 123 cm and measure of angle K is 35 degrees.

To find:

The length of the side KM to the nearest tenth of a centimeter.

Solution:

In a right angle triangle,

$\cos \theta =\dfrac{Base}{Hypotenuse}$

In the given right triangle KLM,

$\cos K=\dfrac{KM}{KL}$

$\cos (35^\circ)=\dfrac{KM}{123}$

$0.819152=\dfrac{KM}{123}$

Multiply both sides by 123.

$0.819152\times 123=KM$

$100.755696=KM$

$KM\approx 100.8$

The measure of side KM is 100.8 cm.

Therefore, the correct option is (2).

8 0

2 years ago

An object is thrown upward from the top of 80 ft tower.The height h of the object after t seconds is represented by the quadrati

Sedaia [141]

Answer:The object will hit the ground after 5 seconds

Step-by-step explanation:

Given height of tower =80 ft

h=-16 $t^{2}$ +64t+80

When the object will hit the ground its height=0

0=-16 $t^{2}$ +64t+80

Multiplying both sides by -1

16t²-64t-80=0

Dividing by 16 both sides

t²-4t-5=0

(t-5)(t+1)=0

t=5 or -1

So t=5 since time cannot be negative

The object will fall after 5 seconds

6 0

3 years ago

Read 2 more answers