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
Elanso [62]
3 years ago
12

%3A%20value%20%5C%3A%20of%20%5C%3A%20x" id="TexFormula1" title=" 5{x}^{2} + 2x = 7x + 3x \\ find \: the \: value \: of \: x" alt=" 5{x}^{2} + 2x = 7x + 3x \\ find \: the \: value \: of \: x" align="absmiddle" class="latex-formula">
please no irrelevant answers​
Mathematics
1 answer:
lana [24]3 years ago
4 0

Answer:

5 {x}^{2}  + 2x = 7x + 3x \\ 5 {x}^{2}  + 2x = 10x \\ 5 {x}^{2}  = 10x - 2x \\ 5 {x}^{2}  = 8x \\ 5x = 8 \\ x =  \frac{8}{5}  = 1.6 \\ thank \: you

You might be interested in
Please help me! Pic included! ;) :p
saul85 [17]
Here you go!! Hope it helps !!

5 0
3 years ago
you have a piece of yarn that is 12 1/2 ft long. You need to cut it into strips that are 1 1/4 ft long. how many strips will you
zysi [14]

Answer:

A.

Step-by-step explanation:

12.5/10=1.25.

12.5/8=1.56

12.5/12=1.04

12.5/6=2.08

it's important to know what 1/2 is, 1/3 is, 1/4 is and 1/5 it's also important to know things like 2/2, 2/3, 3/3, 2/4, 3/4, 4/4, 2/5, 3/5, 4/5, and 5/5. You don't need this until 8th grade though. But get on it if you can. Ask your parents or teacher.

5 0
3 years ago
Solve using the square root property.X^2=-12
Alla [95]

Answer:

x = ± 2i\sqrt{3}

Step-by-step explanation:

note that \sqrt{-1} = i

x² = - 12 ( take square root of both sides )

x = ± \sqrt{-12} = ± \sqrt{4(3)(-1)} = ± 2i\sqrt{3}

5 0
2 years ago
HELP First grade will receive 3/2 of $100,000,000 Second grade will receive 3/4 of $100,000,000 Third grade will receive 3/8 of
allsm [11]
If <span>, which statement </span>must<span> be true?
'

</span>
5 0
3 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
olchik [2.2K]

Answer:

14.52 seconds.

Step-by-step explanation:

We have been given that the height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation y=-16x^2+224x+121. We are asked to find the time, when the rocket will hit the ground.

We know that the rocket will hit the ground, when height will be 0. So to find the time when rocket will hit the ground, we will substitute y=0 in our given equation as:

0=-16x^2+224x+121

Let us solve for x using quadratic formula.

x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

x=\frac{-224\pm\sqrt{224^2-4(-16)(121)}}{2(-16)}

x=\frac{-224\pm\sqrt{50176+7744}}{-32}

x=\frac{-224\pm\sqrt{57920}}{-32}

x=\frac{-224\pm240.66574}{-32}

x=\frac{-224+240.66574}{-32}, x=\frac{-224-240.66574}{-32}

x=\frac{16.66574}{-32}, x=\frac{-464.66574}{-32}

x=-0.520804375, x=14.520804375

Upon rounding to nearest 100th of second, we will get:

x\approx -0.52, x\approx 14.52

Since time cannot be negative, therefore, the rocket will hit the ground after 14.52 seconds.

6 0
4 years ago
Read 2 more answers
Other questions:
  • H(x)=16-x, when x= -4​
    14·1 answer
  • Which equation can be used to solve for angle A?
    7·1 answer
  • The Ericsson method is one of several methods claimed to increase the likelihood of a baby girl. In a clinical​ trial, results c
    13·2 answers
  • How to solve this additional mathematics question ?
    8·1 answer
  • What is the reflection image of R across the y-axis?
    11·2 answers
  • Match the vocabulary word with the correct definition.
    7·1 answer
  • (5b-7)(b-7)=0 what does this mean?
    15·1 answer
  • What would the area of the circle be if the given radius is 2.3 ft? c= π*r
    8·1 answer
  • Interest = $45.60, Rate = 2%, Time = 4 years<br> What’s the principal to the nearest cent
    5·1 answer
  • Insert &lt;,&gt;,or = to make the following sentence true. square root of 17 and 4
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!