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
Sloan [31]
2 years ago
15

Hello, I need help with this math problem please

Mathematics
2 answers:
AlladinOne [14]2 years ago
5 0

Answer:

C) c = -7 ± √129 / 8

Step-by-step explanation:

x = (-b ± √ (b² – 4ac) ) / 2a

[quadratic formula]

where ax² + bx + c = 0.

[quadratic / square trinomial]

given 4c² + 7c – 5 = 0,

↓ ↓ ↓

a b c

where c = x,

c = (-b ± √ (b² – 4ac) ) / 2a.

c = (-(7) ± √ ((7)² – (4)(4)(-5)) ) / 2(4)

c = (-7 ± √ (49 – (-80)) ) / 8

c = (-7 ± √ (129) ) / 8

c = -7 ± √129 / 8

Marina86 [1]2 years ago
4 0

Answer:

4c^2+7c-5=0

4c^2+7c=5

4c^2+7c=5

4c^2+7c-5=0\quad :\quad c=\frac{-7+\sqrt{129}}{8},\:c=\frac{-7-\sqrt{129}}{8}\quad \left(\mathrm{Decimal}:\quad c=0.54472\dots ,\:c=-2.29472\dots \right)

Hope This Helps!!!

You might be interested in
How many solutions does the following system of equations have? y=5/2x+2 and 2y=5x+8
Harman [31]
None they are parallel lines - same slope different y intercept
8 0
3 years ago
What is the value of i^n if the remainder of n/4 is 2?
nydimaria [60]

Answer:

C and D

Step-by-step explanation:

i=√-1

n/4=x.5

since 2 is the remainder

n=2x

then i^n=i^2x

when x is even, i^n =1

when x is odd, i^n=-1

7 0
3 years ago
Read 2 more answers
The center of a circle is at (2, -5) and it's radius is 12. What is the equation of the circle?
Svetach [21]
The equation for a circle is (x-h)^2 +(y-k)^2=r^2
You just have to plug in your coordinates h is the x and k is the y.
The r is radius squared.
so, (x-2)^2+(y-(-5)^2=144
You have to be careful of those tricky negative values. When you distribute the y-(-5) it turns into y+5. 
So your answer is D.
8 0
3 years ago
Read 2 more answers
To create an image, Figure D is going to be reflected across the y-axis, rotated 180° around the point indicated in the figure,
uranmaximum [27]
The image and pre-image are congruent
8 0
3 years ago
What is 3x+4y=8 in slope intercept form?
Tpy6a [65]
Y=3/4x+2 cus u subtract than divide
3 0
3 years ago
Other questions:
  • What is the answer to this question?
    11·2 answers
  • "We use different formulas to find the distance of a segment on a number line, d=|a−b|, and the distance of a segment in the coo
    9·1 answer
  • Assuming that $3u + 12v\neq0$, simplify $\dfrac{12u^3 + 48u^2v}{3u+12v}$.
    9·1 answer
  • How do I solve this??<br><br> x = 3<br> y = 5<br><br> x + y + x + x + y = ?<br><br> Thank You! :)
    8·2 answers
  • Find the volume of a cylinder whose height is 5 inches and whose radius is 3.2 inches use 3.14 for pie round to the nearest tent
    12·1 answer
  • Describe the graph of the linear equation below:<br> y = - 2
    15·1 answer
  • What's the equivalent fraction of 3/7
    12·2 answers
  • HI I NEVER KNEW HOW TO DO THIS BUT I DO SO CAN YALL REALLY HELP ME PLEASE
    6·2 answers
  • Which of these numbers are divisible by 5?<br> 32 51 45 20 18
    5·1 answer
  • In a group of 200 students, the ratio of students who like Nepali and Social studies is 2:3. If 45 students like both the subjec
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!