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
Murljashka [212]
3 years ago
8

Please please help me on this question

Mathematics
1 answer:
Delvig [45]3 years ago
5 0
-7x^2 - 6x^2 + 3x + 5x - 5 + 2
-13x^2 + 8x - 3
You might be interested in
A package of 12 pencils cost $0.96. At this rate, how much would 100 pencils cost?
Alexandra [31]

Answer:$8

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Eloise started to solve a radical equation in this way: Square root of negative 2x plus 1 − 3 = x Square root of negative 2x plu
andreyandreev [35.5K]
Here I copy the steps and indicate where the error is.

Square root of negative 2x plus 1 − 3 = x=> <span>this is the starting equation
</span>

√[ - 2x + 1] - 3 = x

Square root of negative 2x plus 1 − 3 + 3 = x + 3 in this step she added 3 to each side, which is fine

<span> Square root of negative 2x plus 1 = x + 3 <span>she made the addtions => fine</span></span>

Square root of negative 2x plus 1 − 1 = x + 3 – 1 due to <span>plus 1 in inside the square root, this step will not help</span>

<span> Square root of negative 2 x = x + 2 <span>wrong! she cannot simplify - 1 that is out of the square root with +1 that is inside the square root
</span></span>


<span>Then, from here on all is wrong, but she made other additional mistakes.</span>

(Square root of negative 2 x)2 = (x − 4)2 −2x <span> the right side should be (x+2)^2 which is x^2 + 4x +4 not (x-4)^2 - 2x</span>

Later she made a mistake changing the sign of -8x to +8x


Those are the mistakes. Finally, the global error is that she should verify whether the found values satisfied the original equation.

3 0
3 years ago
Read 2 more answers
PPPLLLSSSS HHHUURRRYYY
Lostsunrise [7]

Answer:

c=20 or SU = 20

Step-by-step explanation:

I'M HURRRRYYYINNNNNG DON'TT WORRY!!! :D

Use the Pythagorean theorem:

a²+b²=c²

Plug it in:

12²+16²=c²

144+256=400

c²=400

c=√400

c=20

There did i finish on time!!? XD

6 0
3 years ago
Read 2 more answers
Help please !!!! I need this I don’t need a detailed explanation
natta225 [31]
Answer:


The answer is C, -6/5
7 0
3 years ago
Read 2 more answers
Find the hcf of 18,27,54​
Feliz [49]

Answer:

9

Step-by-step explanation:

18÷9=2

27÷9=3

54÷9=6

3 0
3 years ago
Other questions:
  • You have a 20 - ounce bottle of juice. You pour out 1/4 of the bottle to share with a friend. If you pour out 3 ounces for yours
    15·1 answer
  • Regardless of the algorithm being used, a search through an array is always performed:
    8·1 answer
  • Which of the following number sentences is true?
    6·2 answers
  • What is the y-intercept of the line shown? <br><br> A. 0<br> B. 1<br> C. 3<br> D. 3.5
    9·2 answers
  • 12 2/3 ^ 2 1/3what is 12 2/3 divided by 2 1/3 ​
    13·1 answer
  • A cd has 5% chance of being a smash hit an profiting $5.2 million a 50% chance of being a modest success and profiting $0.9 mill
    6·1 answer
  • The table shows the number of tennis balls that can fit into a given number of cans each can holds the same number of balls fill
    15·1 answer
  • Does someone know how to solve this problem?
    6·1 answer
  • Please help me :( ..​
    11·1 answer
  • On a coordinate plane, a straight red line with a negative slope, labeled g of x, A graph shows the number of texts, numbered 10
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!