Please helpppp!!! I think it's easy but I dont understand

Answer:

j=5

Step-by-step explanation:

7j+20=3j+40

Step 1: Subtract 3j from both sides.

7j+20−3j=3j+40−3j

4j+20=40

Step 2: Subtract 20 from both sides.

4j+20−20=40−20

4j=20

Step 3: Divide both sides by 4.

4j/4

20/4

j=5

Answer:

j=5

Answer: j = 5

Solve this multi step equation: 7j + 20 = 3j + 40

First step: bring the numbers that don't have a variable on the other side of the equal sign.

7j - 3j  =  - 20 + 40

*TIP: REMEMBER: when you have a positive number, and you bring it on the other side of the equal sign, it becomes negative; same thing with a negative number. When you have a negative number, and you bring it on the other side of the equal sign, it becomes positive.*

Second step: Solve the equations on both sides.

4j = 20

Final step: (this step is easy) divide 20 by 4

20/4 = 5;

Therefore, j = 5.

Answer:

Simplifying

3n + 7 + -2 = 0

Reorder the terms:

7 + -2 + 3n = 0

Combine like terms: 7 + -2 = 5

5 + 3n = 0

Solving

5 + 3n = 0

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-5' to each side of the equation.

5 + -5 + 3n = 0 + -5

Combine like terms: 5 + -5 = 0

0 + 3n = 0 + -5

3n = 0 + -5

Combine like terms: 0 + -5 = -5

3n = -5

Divide each side by '3'.

n = -1.666666667

Simplifying

n = -1.666666667

Step-by-step explanation:

Answer:

-1 < = x < 6 [-1 , 6 )

Step-by-step explanation:

hope you got it.

Answer:

=3x to the power of 12+20x to the power of 6+6

Step-by-step explanation:

simplify step-by-step-

[tex]3x1x^{2} 2+2x^{2} 0x6+6x^{2} x12[/tex]

There are no like terms so that means that the answer is

=3x to the power of 12+20x to the power of 6+6

Use the formula for area of a triangle:

Area = 1/2 x base x height.

Fill in what you know:

40 = 1/2 x 20 x height

Multiply both sides by 2:

80 = 20 x height

Divide both sides by 20

Height = 4 m

Answer: 4 mm

Step-by-step explanation: this is because if you double the area then you will get the Area of 80 and if you divide it by 20 you will get 4 mm

Answer:

8cm

Step-by-step explanation:

We subtract 14 from the location of the ant as it traverses down the hole

0 - 14

= -14

As the ant crawls up we at 6

-14 + 6

= -8

The answer would be 8 cm under elevation

Answer:

-17, -8

Step-by-step explanation:

if it reflects over the x-axes it only changes the y into positive or negative

Step-by-step explanation:

9490 is the answer but just work it out see if u can get it

Answer:

a:t

b:f

c:f

d:t

e:f

I think

Answer:1/32

Step-by-step explanation:

Answer:

(-1, 1)

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define systems

y = 3x + 4

y = x + 2

Step 2: Solve for x

Step 3: Solve for y

And we have our answer!

Answer:

A= 30

B= 60

C= 90

Step-by-step explanation:

A is already shown.

B has a right angle making it 90 degrees.

A triangle is 180 degrees 30+90= 120

180-120=60

Answer:

The answer is 1/2

Step-by-step explanation:

hope that helps

8÷8=1

16÷8=2

So the answer is 1/2

Step-by-step explanation:

Elevator's starting point = -90ft

Elevator's position after 15s = -20ft

The elevator did move upwards as

-20ft. > -90ft.

_________________________________

Distance covered by the elevator = -20 + -90

= -20 + 90

= 70ft.

Time = 15s

Speed = distance/time

= 70/15

= 4.7ft/s

Answer:

13

Step-by-step explanation:

Answer:

the answer is 13

Step-by-step explanation:

Answer:

510,000

Step-by-step explanation:

scientific form is what it was in

Answer:

its already in standard form. normal form would be 510000

Step-by-step explanation:

Answer:

1. This means that the actual park size is 50 times larger than the size of the park on the map.

2. If a pathway is 7 inches long on the map, it will be 50 times larger in real life;

= 7 * 50

= 350 inches

3. 1 foot is 12 inches so 350 inches will be;

= 350/12

= 29.2 feet

4. The real life length of the car is;

= 5 * 67

= 335 inches

5. The real life length in feet is;

= 335/12

= 27.9 feet

6. Speed = Distance / time

The time should be converted to hours;

= 10/60 minutes

= 1/6

Speed = 9 / (1/6)

= 54 miles per hour

= 54 mph

This is the answer, 10*3+2*2=34

Answer:

[tex]3x + 2y = 34[/tex]

Step-by-step explanation:

x= the first number

y= the second number

That is how I understood the problem...

Answer:A

Step-by-step explanation:

|(1/2 + 7/8i)^n| is grater than 1.

A complex number is a number of the form a + bi, where a and b are real numbers ; This way, a complex number is defined as a polynomial.

Here, given that,

|(1/2 + 7/8i)^n|

where, n>1

then , we get,

|(1/2 + 7/8i)^n| is grater than 1.

To learn more on complex number click:

https://brainly.com/question/19467739

#SPJ2

Answer:

18

Step-by-step explanation:

What number is 90% of 20?

18

What is 90 percent (calculated percentage %) of number 20? Answer: 18.

Answer:

hi! i think you'll be ok, maybe ask your teacher if you can make up any work of do a project to get your grade up. teachers will more look at all you A's not that one C. :))

Step-by-step explanation:

Answer:

Hi!

Step-by-step explanation:

I think you will be okay! I calculated your average by adding all of them and dividing by the number of classes you are taking and it is still around a 96.5!! That is really good! If you are an overachiever like me, I understand that maybe you think it isn't your full potential, but trust me, it is a really good grade!! Whatever high school you are applying to (I'm not too sure how it works because I just went to my public highschool lol) will see you are taking a lot of classes and are doing phenomenal in all of them! I would try asking for extra credit or finding out if there is any way you can raise your grade, I do that when I am not happy with my grades. If you wanted to figure our your GPA out of 4.0 I think there are gpa calculators if you look them up. I hope this was helpful!

Answer:

Step-by-step explanation:

Answer:

It would take her 25.2 minutes

Step-by-step explanation:

6 divided by 5 gives you the 1.2 minutes

Then I would do 1.2 minutes for each lap  * 21 laps = 25.2 minutes

Answer:

yes addison is right because using distributive property would get you from  "5 (x + 1) - 2x = 2 (3 + x)" to "5x + 5 - 2x = 6 + 2x". from there, you'd combine like terms and simplify. you get "3x + 5 = 6 + 2x".  Subtract 2x on each side, and you get "x + 5 = 6". Subtract 5 on each side, you get "x = 1".

Answer:

X=1.2

Step-by-step explanation:

i just did that

Answer:x is 1.2

Step-by-step explanation:

Caclator

Answer:

Yes it will

Step-by-step explanation:

A circular coin has circumference 32 pi millimeters. Will the coin fit through a slot that is 35 millimeters long? Explain.

The formula for the circumference of a circle = πD

Where D = Diameter which can also be referred to as the length of the circle

Circumference =32π mm

Hence:

32π = πD

Cancel out the π

D = 32 mm

The diameter of the coin = 32 mm

The length of the slot = 35 mm hence, the coin with a diameter of 32 mm can fit into the slot

Answer:

45mph

Step-by-step explanation:

225mi / 5hr = 45mph

Answer: 50

Step-by-step explanation: