All categories

3 years ago

Describe the steps you would take to solve for the variable x in the following

Mathematics

1 answer:

adoni [48]3 years ago

5 0

Answer:

x = 19

Step-by-step explanation:

1. add 31 on both sides (you wanna get the "x" by itself)

ex: 2x - 31 = 7

+31 +31

2. the 31s cancel each other out so now you add 31 + 7

2x = 7

+31

___________

3. divide 2 on both sides so the 2s cancel each other out and only the x is left

ex: 2x / 2 = x 38 ( the 38 stands alone)

4. now divide 38/2 and you have your answer

X= 19

You might be interested in

10/n = 18/27 what is n?

sergiy2304 [10]

N = 10*27 / 87 = 270/18 = 15

3 0

3 years ago

Read 2 more answers

There are 20 boys and 25 girls in a classroom what is the ratio of girls to boys

VMariaS [17]

20:25 now simp that and you will have your answer

7 0

3 years ago

Read 2 more answers

Please help <br>cos40∘=sin(x+30∘)

iVinArrow [24]

Answer:

x = 20 degrees.

Step-by-step explanation:

cos40∘=sin(x+30∘)

sin (x + 30) = 0.766

x + 30 = arcsin 0.766 = 50

x = 50 - 30 = 20.

5 0

2 years ago

Read 2 more answers

The hare challenged the tortoise to a race from the water fountain to the park bench. In order to ensure a fair race, the tortoi

BabaBlast [244]

A. I believe the hare never catches up to the tortoise
B. The hare waited 50 minutes before walking
C. The tortoise won the race

5 0

3 years ago

Need HELP PLS PIC ATTACHED

Vera_Pavlovna [14]

Answer:

$4x^{2}$ -13x+10

Step-by-step explanation:

(4x+5)(x-2)

Multiply each term in the first parenthesis by each term in the second (foil)

Step 1: Expand it by writing out each multiplication. I added a picture showing which order to do it. (go in order of green, red, blue, yellow.) (you can remember this as first, outside, inside, last.)

When you expand it'll look like: 4x⋅x+4x⋅-2-5x-5⋅-2

Step 2: Calculate product

4x⋅x+4x⋅-2-5x-5⋅-2 (for the 4x⋅x it would be written like $4x^{2}$ )

$4x^{2}$ +4x⋅-2-5x-5⋅-2

$4x^{2}$ +4x⋅-2-5x-5⋅-2 (4x⋅-2 becomes -8x) (multiply 4x times -2)

$4x^{2}$ -8x-5x-5⋅-2

$4x^{2}$ -8x-5x-5⋅-2 (-5⋅-2 becomes +10) (multiply -5 times -2)

$4x^{2}$ -8x-5x+10

Step 3: collect like terms

$4x^{2}$ -8x-5x+10 (-8x-5x becomes -13x) (-8x times -5x)

$4x^{2}$ -13x+10 is the most simplified so it should be your final answer

4 0

1 year ago