All categories

4 years ago

What is the answer for 2x + x= ?

Mathematics

2 answers:

DiKsa [7]4 years ago

6 0

Answer:

Step-by-step explanation:

2x + x

Answer: 3x

vovangra [49]4 years ago

4 0

2x + X = 3X in total

You might be interested in

A strain of bacterial cells doubles inpopulation every 2 days. A single cell is placed in a dish with sufficient nutrients to su

ArbitrLikvidat [17]

The equation that will calculate the number of days after which there will be 256 bacterial cells in the dish is 2^(d/2) = 256

<h3>How to determine the equation of the number of days?</h3>

The given parameters are:

Rate, r = doubles every two days

Initial number of strain, a = 1

This means that the function is an exponential function.

An exponential function is represented as:

A(d) = a * r^d

Since the strain doubles every two days, we have:

A(d) = a * r^(d/2)

Substitute the known values in the above equation

A(d) = 1 * 2^(d/2)

Evaluate the product

A(d) = 2^(d/2)

When there are 256 bacterial cells, the equation becomes

2^(d/2) = 256

Hence, the equation that will calculate the number of days after which there will be 256 bacterial cells in the dish is 2^(d/2) = 256

Read more about exponential functions at:

brainly.com/question/2456547

#SPJ1

6 0

2 years ago

Write the equation of the parabola that has its x-intercepts at (1+<img src="https://tex.z-dn.net/?f=%5Csqrt%7B5%7D" id="TexForm

VladimirAG [237]

Answer:

$y=2x^2-4x-8$

Step-by-step explanation:

<u>Factored form of a parabola</u>

$y=a(x-p)(x-q)$

where:

p and q are the x-intercepts.
a is some constant.

Given x-intercepts:

(1+√5, 0)
(1-√5, 0)

Therefore:

$\implies y=a(x-(1+\sqrt{5}))(x-(1-\sqrt{5}))$

$\implies y=a(x-1-\sqrt{5})(x-1+\sqrt{5})$

To find a, substitute the given point (4, 8) into the equation and solve for a:

$\implies a(4-1-\sqrt{5})(4-1+\sqrt{5})=8$

$\implies a(3-\sqrt{5})(3+\sqrt{5})=8$

$\implies4a=8$

$\implies a=2$

Therefore, the equation of the parabola in factored form is:

$\implies y=2(x-1-\sqrt{5})(x-1+\sqrt{5})$

Expand so that the equation is in standard form:

$\implies y=2(x^2-x+\sqrt{5}x-x+1-\sqrt{5}-\sqrt{5}x+\sqrt{5}-5)$

$\implies y=2(x^2-x-x+\sqrt{5}x-\sqrt{5}x+\sqrt{5}-\sqrt{5}+1-5)$

$\implies y=2(x^2-2x-4)$

$\implies y=2x^2-4x-8$

6 0

2 years ago

Each table in a banquet room seats 8 people. The room can seat no more than 360 people. Write and solve an inequality to represe

yarga [219]

Answer:

360 ≥ 8t

Step-by-step explanation:

Let t be the number of tables. Since there can't be more than 360 people, it has to be less than or equal to.

3 0

4 years ago

The ratio of red pens to black pens is 2:9, the ratio of black pens to blue pens is 5:4. Show less than 50% of the pens are blac

Svetradugi [14.3K]

Answer:

is that all?

Step-by-step explanation:

7 0

3 years ago

What does -2x+9=-4x+27 equal

r-ruslan [8.4K]

The answer is 9

Step 1- add 4x to both sides and you get 2x+9=27

Step 2-subtract 9 from both sides and you get 2x=18

Step 3-divide by 2x and you get x=9

7 0

3 years ago

What is the answer for 2x + x= ?​

What is the answer for 2x + x= ?