1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SSSSS [86.1K]
3 years ago
9

Solving equations 4x-2=18

Mathematics
2 answers:
aleksandrvk [35]3 years ago
6 0
4x - 2 = 18

4x = 20

x = 5

Nice days.......
klio [65]3 years ago
4 0
Thats easy its x = 5 , 4 times 5 is 20 minus 2 equals 18 

have a nice day 
You might be interested in
The probability that a house in an urban area will develop a leak is 55​%. if 2020 houses are randomly​ selected, what is the pr
k0ka [10]
<span>The probability that a house in an urban area will develop a leak is 55​%. if 20 houses are randomly​ selected, what is the probability that none of the houses will develop a​ leak? round to the nearest thousandth.

Use binomial distribution, since probability of developing a leak,  p=0.55 is assumed constant, and
n=20, x=0
and assuming leaks are developed independently between houses,
P(X=x)
=C(n,0)p^x* (1-p)^(n-x)
=C(20,0)0.55^0 * (0.45^20)
=1*1*0.45^20
=1.159*10^(-7)
=0.000

</span>
7 0
3 years ago
The length of a rectangle is 3 inches more than the width. The area is 10 square inches. Find the dimensions
mr_godi [17]

Answer:

Width = 2

Length = 5

Step-by-step explanation:

let A be the area of the rectangle

   L be the length of the rectangle

   w be the width of the rectangle

<u><em>Formula</em></u>: ‘<u><em>area of a rectangle</em></u>’

A = L × w

…………………………………………………

A = L × w

⇔ 10 = (w + 3) × w

⇔ 10 = w² + 3w

⇔ w² + 3w - 10 = 0  

<u><em>Solving the quadratic equation</em></u> w² + 3w - 10 =  0 :

Δ = 3² - 4(1)(-10) = 9 - (-40) = 9 + 40 = 49

then √Δ = 7

\Longrightarrow w=\frac{-b+\sqrt{\Delta } }{2a} =\frac{-3+7}{2} =2

  or\ w=\frac{-b-\sqrt{\Delta } }{2a} =\frac{-3-7}{2} =-5

-5 is not valid ,because w represents the width

which must be a positive number

Then  w = 2

<u><em>Conclusion</em></u>:

Width = 2

Length = 2 + 3 = 5

6 0
2 years ago
Find the circumference of a circle whose radius is 4 feet. Use 3.14 for Pi.
slavikrds [6]

Answer:

25.12

Step-by-step explanation:

The formula of the circumference of a circle is: C = 2(pi)(r)

Plug in 3.14 for pi and 4 for the radius.

C = 2(3.14)(4)

Multiply.

C = 25.12

5 0
3 years ago
The price of a microwave oven went up from $75 to $90; then went on sale for $57. What is the percent decrease from the original
Arisa [49]

Answer:

<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Original price of a microwave = $ 75

Mark-up price of the microwave = $ 90

Sale price of the microwave = $ 57

2. What is the percent decrease from the original price to the sale price?

For answering this question we will use the Direct Rule of Three this way:

Price         Percentage

75                 100%

57                   x

75x = 57 * 100

75x = 5,700

x = 5,700/75

x = 76

76 = 100 - 24

<u>The percent decrease of the microwave from the original price to the sale price is 24%</u>

5 0
3 years ago
Read 2 more answers
An equation and the steps to solve it are shown below:
lisov135 [29]

Answer:

message me and i will tell u

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Brainliest!!!<br> Please help ASAP !
    15·1 answer
  • What is the value of the discriminant of the quadratic equation −2x2 = −8x + 8, and what does its value mean about the number of
    14·2 answers
  • 5. What number is 45% of 200?<br>​
    9·2 answers
  • What are the fraction of the shape shaded on these three shapes?
    11·1 answer
  • You should multiply by 4 before adding 16 to solve the inequality 11 &gt;<br>16​
    12·1 answer
  • In ΔGHI, g = 63 cm, h = 80 cm and i=42 cm. Find the measure of ∠I to the nearest 10th of a degree.
    8·1 answer
  • A phone company offers two monthly plans. Plan A costs $10 plus an additional $0.15 for each minute of calls. Plan B costs $19 p
    5·1 answer
  • Can I have some help please​
    8·1 answer
  • 8.43 divided by 12.654
    7·1 answer
  • Plz help me with a, b, c, and d <br><br> Thx
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!