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
Leni [432]
3 years ago
7

PLS HELP ME ASAP FOR 12 AND 14!! (MUST SHOW WORK!!) + LOTS OF POINTS!!

Mathematics
2 answers:
nignag [31]3 years ago
5 0
R for ?
14) 96x1=24r
       96=24r
       r= 4 
Advocard [28]3 years ago
3 0
Both of these problems are proportions. To solve proportions you cross multiply.
#12
4/(-1/2) = 6/x
4x = (-1/2)*6
4x = -3
Divide both sides by 4
x = -3/4
#14
96/24 = x/1
24x = 96
Divide both sides by 24
x = 4
You might be interested in
A translation 2 units to the right and 10 units up. Then a reflection over the line AC
Artyom0805 [142]
80 is the correct answer
6 0
3 years ago
Topic: The Quadratic Formula
Finger [1]

Answer:

Step-by-step explanation:

The quadratic formula for a equation of form

ax²+bx + c = 0 is

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

For the first equation,

x²+3x-4=0,

we can match that up with the form

ax²+bx + c = 0

to get that

ax² =  x²

divide both sides by x²

a=1

3x = bx

divide both sides by x

3 = b

-4 = c

. We can match this up because no constant multiplied by x could equal x² and no constant multiplied by another constant could equal x, so corresponding terms must match up.

Plugging our values into the equation, we get

x= \frac{-3 +- \sqrt{3^2-4(1)(-4)} }{2(1)} \\= \frac{-3+-\sqrt{25} }{2} \\ = \frac{-3+-5}{2} \\= -8/2 or 2/2\\=  -4 or 1

as our possible solutions

Plugging our values back into the equation, x²+3x-4=0, we see that both f(-4) and f(1) are equal to 0. Therefore, this has 2 real solutions.

Next, we have

x²+3x+4=0

Matching coefficients up, we can see that a = 1, b=3, and c=4. The quadratic equation is thus

x= \frac{-3 +- \sqrt{3^2-4(1)(4)} }{2(1)}\\= \frac{-3 +- \sqrt{9-16} }{2}\\= \frac{-3 +- \sqrt{-7} }{2}\\

Because √-7 is not a real number, this has no real solutions. However,

(-3 + √-7)/2 and (-3 - √-7)/2 are both possible complex solutions, so this has two complex solutions

Finally, for

4x² + 1= 4x,

we can start by subtracting 4x from both sides to maintain the desired form, resulting in

4x²-4x+1=0

Then, a=4, b=-4, and c=1, making our equation

x=\frac{-(-4) +- \sqrt{(-4)^2-4(4)(1)} }{2(4)} \\= \frac{4+-\sqrt{16-16} }{8} \\= \frac{4+-0}{8} \\= 1/2

Plugging 1/2 into 4x²+1=4x, this works as the only solution. This equation has one real solution

7 0
3 years ago
Point H is the midpoint of side FK. Triangles F G H and K J H are connected at point H. The lengths of sides F H and H K are con
earnstyle [38]

Answer:

the answer would be x=6

to find it you would set 3x-2 equal to 2x+4 and solve because the two sides would be equal if the triangles are congruent

hope this helps :)

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Does anybody wanna go on zooom?
agasfer [191]

Answer:

No, thanks.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
The average weight of 5 linemen is 215 pounds. The average weight of the 6 skill players is 187 pounds. What is the average weig
Sever21 [200]

Answer:

199.73

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Geometry (19)<br><br> Study Guide <br><br> My answer: x = 11 so 2(11) - 6 = 16, FG = 16
    6·1 answer
  • Both circle A and circle B have a central angle measuring 50°. The area of circle A's sector is 36π cm2, and the area of circle
    13·1 answer
  • Layla is saving up money for a trip. She already has $650 saved and plans to save an additional $150 each month for the trip. 
    11·1 answer
  • A mixture contains forty ounces of glycol and water and is ten percent glycol. If the mixture is to be strengthened to twenty-fi
    8·1 answer
  • Which of the following best describes constructive forces?
    6·2 answers
  • What is the square root of 76
    14·2 answers
  • Equation of points (-5,5) and (5,5)​
    8·1 answer
  • Which point is located at (Negative 0.5, 0.75)? On a coordinate plane, point B is 0.75 units to the right and 0.5 units down. Po
    8·2 answers
  • Brainlist for correct answer and 25 points for answering! Write the equation of a line that is perpendicular to y=0.25x-7 and th
    12·1 answer
  • Select the correct answer from each drop-down menu.The center of the circle is at O. Segment AB is tangent to circle O at point
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!