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
Klio2033 [76]
3 years ago
13

Solve this equation 2a-4+c=6​

Mathematics
1 answer:
musickatia [10]3 years ago
5 0

C = 10

A is not defined

i think so

You might be interested in
You are having a discussion about sequences with your classmate. She insists the the sequence 2,3,5,8,12 must be either arithmat
IgorC [24]
The sequence is, in fact, quadratic. It is described by the equation
.. a[n] = (n*(n -1))/2 +2

First differences are increasing, so the sequence will not be arithmetic. An arithmetic sequence has constant first differences.

Second differences are constant, so the sequence will not be geometric. A geometric sequence will have first-, second-, third-differences, and those to any level, that have the same constant ratio as the terms of the original sequence.
4 0
3 years ago
At a store, 4 pairs of pants cost $90.00 and 4 pairs of jeans cost $78.00. How much would it cost to buy 3 pairs of pants and 5
liq [111]
$67.50 for three pairs of pants. $97.50 for five pairs of jeans. For all of these the price would be $165.00
5 0
3 years ago
A pencil box in the shape of a rectangular prism measures 3 inches by 4 inches by 12 inches. What is the length of the longest p
stepan [7]

Answer:

(square root of 160)in

Step-by-step explanation:

the longest 2 sides are 4 and 12

4^2 + 12^2 = c^2

16+144=c^2

160=c^2

c = square root of 160

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%20%5Csqrt%7Bx%20%5Csqrt%7Bx%20%5Csqrt%7Bx....%7D%20%7D%20%7D%20%7D%20%20%3D%20%
andrey2020 [161]

First observe that if a+b>0,

(a + b)^2 = a^2 + 2ab + b^2 \\\\ \implies a + b = \sqrt{a^2 + 2ab + b^2} = \sqrt{a^2 + ab + b(a + b)} \\\\ \implies a + b = \sqrt{a^2 + ab + b \sqrt{a^2 + ab + b(a+b)}} \\\\ \implies a + b = \sqrt{a^2 + ab + b \sqrt{a^2 + ab + b \sqrt{a^2 + ab + b(a+b)}}} \\\\ \implies a + b = \sqrt{a^2 + ab + b \sqrt{a^2 + ab + b \sqrt{a^2 + ab + b \sqrt{\cdots}}}}

Let a=0 and b=x. It follows that

a+b = x = \sqrt{x \sqrt{x \sqrt{x \sqrt{\cdots}}}}

Now let b=1, so a^2+a=4x. Solving for a,

a^2 + a - 4x = 0 \implies a = \dfrac{-1 + \sqrt{1+16x}}2

which means

a+b = \dfrac{1 + \sqrt{1+16x}}2 = \sqrt{4x + \sqrt{4x + \sqrt{4x + \sqrt{\cdots}}}}

Now solve for x.

x = \dfrac{1 + \sqrt{1 + 16x}}2 \\\\ 2x = 1 + \sqrt{1 + 16x} \\\\ 2x - 1 = \sqrt{1 + 16x} \\\\ (2x-1)^2 = \left(\sqrt{1 + 16x}\right)^2

(note that we assume 2x-1\ge0)

4x^2 - 4x + 1 = 1 + 16x \\\\ 4x^2 - 20x = 0 \\\\ 4x (x - 5) = 0 \\\\ 4x = 0 \text{ or } x - 5 = 0 \\\\ \implies x = 0 \text{ or } \boxed{x = 5}

(we omit x=0 since 2\cdot0-1=-1\ge0 is not true)

3 0
1 year ago
2. A small submarine is at an elevation of -30 feet compared to sea level. What is its elevation att
Zolol [24]
A 1. Realy jjjjjjjjj
5 0
3 years ago
Other questions:
  • A tool box is a rectangular solid with sides of 19 in., 12 in., and 9 in. What is its volume?
    13·2 answers
  • Can y’all help me answer these questions
    14·1 answer
  • Which one is a solution to the system of equations? x + 3y = 18 x + 2y = 14
    14·2 answers
  • K/2 + 3 =0<br> Show work please
    10·1 answer
  • 1) In the year 2010, Shaniya invested $1 in the stock market. In the year 2022, her $1 was worth $2. In the year 2034, it was wo
    10·1 answer
  • A worm squiggles 10 cm in 5 minutes. What was it average speed
    13·1 answer
  • The selling price of a skateboard is 147 $. The store has 75% markup policy. What uis the selling price of the skateboard
    5·1 answer
  • Help answer 7, 8 and 9 for brainlst
    10·1 answer
  • 1.6y+y-4/15y+1 1/6y=2 1/3
    13·1 answer
  • Identify all the word phrases that can be represented using the expression 3t – 5.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!