All categories

3 years ago

What is the value of 7x 2squared + 2x when x = 3?

Mathematics

1 answer:

mash [69]3 years ago

6 0

Answer:

Given expression has the value 69

Step-by-step explanation:

Given equation is:

$=7x^2 + 2x$

Now we have to put x = 3

So the equation will become:

$=7(3)^2 + 2(3)$

By simplifying:

As $3^{2} = 9$

and 2*3 = 6

So the above equation will become:

$=7(9 ) + 6\\= 63 + 6\\= 69$

So the value of given expression is 69.

i hope it will help you!

You might be interested in

Help me please ?!!!!

blondinia [14]

Answer:

The slope of the line is -1

Step-by-step explanation:

Slope of a Line

Suppose we know a given line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated as follows:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

From the table in the image, we select the points (1,4) (3,2). The slope is:

$\displaystyle m=\frac{2-4}{3-1}=\frac{-2}{2}=-1$

Now select two other points like (5,0) (7,-2)

$\displaystyle m=\frac{-2-0}{7-5}=\frac{-2}{2}=-1$

Following the same procedure with any other pair of points, we'll get the very same result:

The slope of the line is -1

4 0

4 years ago

HELLPPPPP Write the equation y=-3/4x+2 in standard form.

Karo-lina-s [1.5K]

The standard form is 3x+4y=8

3 0

3 years ago

Katie has 4 times as many songs on her music player as Lou. Tiffany has 6 times as many songs on her music player as Lou. Altoge

Dmitry_Shevchenko [17]

Kelly has 248 songs, hope this helps!

7 0

3 years ago

write a multiplication problem using two decimals that has a product greater than 0.1 but less than 0.2

wariber [46]

So the question is asking to write a multiplication problem that uses two decimals that has a product greater than 0.1 but less than 0.2 and in my further computation, I would give an example of 0.5*1.5 equals 0.75. I hope you are satisfied with my answer and feel free to ask for more

6 0

4 years ago

Read 2 more answers

Ns of

motikmotik

Answer:

y=3x2^x

Step-by-step explanation:

5 0

3 years ago