Ask question

Ask question

All categories

Yakvenalex [24]

2 years ago

11

1/2x+4=20 solve for x.. Help?

2 answers:

hichkok12 [17]2 years ago

7 0

Answer: 32

Step-by-step explanation: ok so here is what i do for those I grab a caculator (desmos online caculator i like to use but not required) then ill do (1/2×x)+4 but then once i write that i go back to the x delete the x and keep putting random numbers in higher and higher by one till the i get the answer (example: for this one i wrote that than i removed the x in it and did 1/2×5+4 then when that did not equal 20 i turned the 5 into a 6 then 6 was wrong so 7, then 8, then i just skipped to 20 then 20 was still wrong so skipped to 30, 30 was also wrong but CLOSE so then i tried 31 then 32 till the answer was 20 and when i did 32 it did say 20) hopes this helps

navik [9.2K]2 years ago

3 0

Answer: <em>x=32</em>

Step-by-step explanation:

<em>1/2x+4=20</em>

<em> -4 -4</em>

<em>1/2x=16</em>

<em>Multiply by 1/2 on each side</em>

<em>x=32</em>

You might be interested in

What is the slope of the line from November to December

Wittaler [7]

It is (D) I believe. From what I can see it is going down from 1.40 to 1.39 from November to December which is a loss of 0.01

3 0

3 years ago

Based on the following system of equations, determine the number of solutions.

larisa [96]

2 solutions x,y= 2,7

5 0

2 years ago

TriangleA′B′C′ is the image of triangleABC after a dilation.

hammer [34]

Answer:

Step-by-step explanation:

The image A’B’C’ is scaled down by a factor of 1/3

7 0

2 years ago

Read 2 more answers

The length of a rectangle is 5 inches more than it's width, x. The area of a rectangle can be represented by the equation.x^2+5x

Digiron [165]

Answer:

the width=15; the length=20

Step-by-step explanation:

1. to solve the given equation: x²+5x-300=0;

x₁= -20; x₂=15, where 'x' can be only positive value. It means x=15;

2. according to the condtition the length is more, it means 15+5=20.

3. the width is x=15; the length is 20.

8 0

2 years ago

Without drawing the graphs, find the points of intersection of the lines: a 7x+4y=23 and 8x–10y=19

emmainna [20.7K]

Answer:

(3,0.5)

Step-by-step explanation:

The given system has equations:

$7x + 4y = 23 \\ 8x - 10y = 19$

Let us multiply the second equation by 4 and the first equation by 10.

$70x + 40y = 230 \\ 32x - 40y = 76$

We add both new equations to get:

$102x = 306 \\ x = \frac{306}{102} = 3$

Put x=3 into the first equation and solve for y.

$7(3) + 4y = 23 \\ 21 + 4y = 23 \\ 4y = 23 - 21 \\ 4y = 2 \\ y = \frac{1}{2}$

The point of intersection is the solution to the system of equation which is (3,0.5)

8 0

3 years ago