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
aev [14]
2 years ago
6

Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2​

Mathematics
1 answer:
zmey [24]2 years ago
8 0

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = \frac{1}{2}(\text{Base})(\text{Height})

     8 = \frac{1}{2}(x + 1)(3x - 7)

16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

0 = 3x² - 4x - 23

3x²- 4x - 23 = 0

By quadratic formula,

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

x = \frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}

x = \frac{4\pm \sqrt{292}}{6}

x = \frac{4\pm 17.09}{6}

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

You might be interested in
Consider the function , f(x)=4x-5 what is the domain value that correspond to an output of f(x) = 11
kati45 [8]

Answer:

x = 4

Step-by-step explanation:

given f(x) = 11 then equate f(x) = 11 and solve for x

4x - 5 = 11 ( add 5 to both sides )

4x = 16 ( divide both sides by 4 )

x = 4 ← value of x in the domain


6 0
3 years ago
What is the common difference of an arithmetic sequence defined by the formula an=2n−4?
Ainat [17]

Answer:

d = 2

Step-by-step explanation:

Generate the first few terms

a₁ = (2 × 1) - 4 = 2 - 4 = -2

a₂ = (2 × 2) - 4 = 4 - 4 = 0

a₃ = (2 × 3) - 4 = 6 - 4 = 2

a₄ = (2 × 4) - 4 = 8 - 4 = 4

d = 0 - (- 2) = 2 - 0 = 4 - 2 = 2

5 0
3 years ago
Read 2 more answers
Find the equation of the line parallel to the line graphed that passes through the point (6,-1)
s344n2d4d5 [400]

What is the line that is graphed?

3 0
2 years ago
Read 2 more answers
What is the midpoint of the line segment with endpoints (-2,-2) and (4.6)?
erma4kov [3.2K]

Answer:

Step-by-step explanation:

(-2,2) ...x1 = -2 and y1 = 2

(4,6)..x2 = 4 and y2 = 6

midpoint formula :

m = ((x1 + x2) / 2 , (y1 + y2) / 2)

m = ((-2 + 4) / 2 , (2 + 6) / 2)

m = 2/2 , 8/2

m = (1,4) <===

5 0
3 years ago
-8=-16+n what is the answer?
SpyIntel [72]

Answer:

8

Step-by-step explanation:

First add -16 to -8.

your equation then is n=8.

You get your answer.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me asap!!!!! 4x^{2} -144
    10·1 answer
  • I'm trying to figure out with my son how to connect consecutive points with straight lines
    7·1 answer
  • What is the volume of the prism below with height of 5 base of 10
    6·1 answer
  • What three points do i graph? <br><br> y= -2x
    15·1 answer
  • It's a comon core math question the teacher is nice but.... She dosent like helping students out​
    6·1 answer
  • Number 3 I lease help and show ur work I already know the answer is 23 boxes I just need the work shown
    6·1 answer
  • Prove that , tan 4x = 4 tan x (1-tan^2 x ) / (1-6 tan^2x + tan^4x).
    13·1 answer
  • -5x &lt; 35<br> I am look for a answer and explanation
    15·1 answer
  • I need help here is a picture
    8·2 answers
  • Consider the cases SSS, AAS, ASA, SAS, and SSA. For which of these cases are you unable to solve the triangle using only the Law
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!