All categories

2 years ago

Evaluate the following when x = 3 2x+ 5(x)

Mathematics

1 answer:

Nina [5.8K]2 years ago

4 0

Hi!

I can help you with joy!

Evaluate:

$\fbox{2x+5x}$ when $\fbox{x=3}$

First, add x's:

$\rm{7x}$

Now, plug in the value of x (3)

$\rm{7(3)$

Multiply:`

$\rm{21}$ (Answer)

Hope it helps!

Ask me if you have any doubts.

Enjoy Your Day/Night! :)

<em>Answered by</em>

<em>~</em>Silent~

You might be interested in

What is the slope of the line through (-1, -7) and (3, 9)?

monitta

Answer:

slope = 4

Step-by-step explanation:

.................

3 0

2 years ago

Please help and explain it would be very helpful

iris [78.8K]

So for the first one think of it as decimals so it’s easier: 9.20-7.35, subtract and it would be 1.85 so since we use decimals to make it easier it isn’t actually a decimal so it would be 2 hours and 25 minutes. And for the second one you just add 50 minutes to that and you would get 3 hours and 15 minutes.

6 0

3 years ago

Ming plays video games online.

Vlad1618 [11]

Ming needs to play for 15 hours to get 500 points. They gave him 200 for signing up, so 500-200=300 more points needed. 300 divided by 20= 15 more hours.

7 0

3 years ago

Read 2 more answers

Adding and subtracting what is the solution to x = 4 = 12

marshall27 [118]

The answer would be 3 because 3✖️4= 12

8 0

3 years ago

Solve it by substitution method:- 5x - 6y=-9 and 3x + 4y= 25

user100 [1]

$\left\{\begin{array}{ccc}-5x-6y=-9&/\cdot2\\3x+4y=25&/\cdot3\end{array}\right\\+\left\{\begin{array}{ccc}-10x-12y=-18\\9x+12y=75\end{array}\right\\------------\\.\ \ \ \ \ \ \ -x=57\\.\ \ \ \ \ \ \ \ \ x=-57\\\\3\cdot(-57)+4y=25\\-171+4y=25\\4y=25+171\\4y=196\ \ \ \ /:4\\y=49\\\\Solution:x=-57;\ y=49.$

8 0

3 years ago