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
zlopas [31]
3 years ago
10

DEF is a right triangle. A. True B. False

Mathematics
2 answers:
Vika [28.1K]3 years ago
8 0

------------ False-----------

~ APEX

~ took the quiz

----------------- <3---------------------

Sonbull [250]3 years ago
5 0

Given <u>triangle</u> DEF with the <u>lengths</u> of all <u>sides</u>. If you want to check whether this triangle is <u>right</u>, use the <u>Pythagorean theorem</u>. The greatest side is EF, then only this side could be the hypotenuse.

Check, whether

EF^2=ED^2+DF^2.

Substitute ED=25, EF=48 and DF=27:

DF^2+DE^2=27^2+25^2=729+625=1354,\\ \\EF^2=48^2=2304.

Since 1354\neq 2304, the triangle DEF is not right triangle.

Answer: correct choice is B


You might be interested in
Hurry Please!
blagie [28]
I believe the answer should be 4 and 2
3 0
3 years ago
Can some help with this question
marissa [1.9K]

Answer:

y + 1 = 3(x - 1)

Step-by-step explanation:

The given point is (1,-1) meaning that x1 = 1 and y1 = -1

The slope of this line is m = 3 because we go up 3 and over to the right 1 (eg: go from the point (1,-1) to (2,2) to see this in action)

Plug these three pieces of info into the point slope formula below

y - y1 = m(x - x1)

y - (-1) = 3(x - 1)

y + 1 = 3(x - 1)

6 0
3 years ago
Read 2 more answers
A geologist in South America discovers a
diamong [38]

Answer:

This is a radioactive decay / half-life problem.

Initial amount of C 14 = 100% Present Amount = 57%

k = .0001  (that value should be negative)

Nt = No * e^ (k*t)

You need to solve that equation for "time" (equation attached)

time = natural log (Ending amount / Starting Amount) / k

time = natural log (57% / 100%) / -.0001

time = ln (.57) / -.0001

time = -.56211891815 / -.0001

time = 5,621.2 years    (age of the bird skeleton)

These problems are quite complicated but I think I know this pretty well.

Need to know more? Visit my website (it's on the graphic).

Step-by-step explanation:

7 0
3 years ago
The inequality 7-2/3x &lt; x-8
romanna [79]
Am going to presume you want it solved.
Please pardon my presumption

7 - (2/3)x < x - 8,    Take all the x to one side of the inequality
-(2/3)x-x <  - 8 -7
-(5/3)x <  - 15    Divide both sides by -5/3  and inequality sign changes

x  >  (-15)/(-5/3)

x >    15  * 3/5        .     5 into 15 is 3.

x  >  3*3

x >    9

8 0
3 years ago
Plzzzzzzzzzzzzzzzz Helo <br>Answer correct please but It can tell if the answer is wrong ​
Setler79 [48]

Answer:

im pretty sure 20 seconds

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • the distance around the outside of cedar park is 0.8 mile. Joanie ran 0.25 of the distance during her lunch break. How far did s
    5·1 answer
  • Need help asap!! please
    5·1 answer
  • What type of function is represented below the tables of value??
    15·1 answer
  • Which shows 542 − 462 being evaluated using the difference of squares method?
    15·2 answers
  • Natalie worked during the summer for 12 weeks at an amusement park. She earned a salary and put 30% of her earnings into savings
    13·1 answer
  • I need help with number 3, i’m stuck!
    8·1 answer
  • 1+1 lol dats da question
    13·1 answer
  • A line contains the points (10,7) and (10,-8). Write the equation of the line
    12·1 answer
  • 2. I'm thinking of two positive integers. Their<br> sum is 8. Their product is 12. What are they?
    15·2 answers
  • Write an equation of the form y = mx for the line shown below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!