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
Ainat [17]
3 years ago
15

Which characteristics will prove that ΔDEF is an acute, isosceles triangle?

Mathematics
1 answer:
ololo11 [35]3 years ago
3 0

Answer:

  a.  segment DE and segment EF are congruent to each other but not to segment DF, and their slopes are not related.

Step-by-step explanation:

In order for a triangle to be isosceles, two of the line segments must be congruent. (eliminates choices C and D)

If the slopes of the congruent segments are negative reciprocals of each other, the triangle is a right triangle, not an acute triangle. (eliminates choice B)

With choices B, C, D eliminated, we are left with choice A.

__

However, <em>that necessary description is not sufficient</em> to constrain the triangle to be an acute triangle. In order for the triangle to be acute, the third side must be less than √2 times the length of either of the congruent sides.

The correct answer is "none of the above."

You might be interested in
A mathematical relationship can be represented in which ways? Choose all that apply.
Ivenika [448]
B , A , C , D , it’s all of the above
3 0
3 years ago
AC=4, AE=7, AD=10, what is the length of AB? <br> A: 1 3/7 <br> B: 2 1/2<br> C: 5 5/7<br> D: 17 1/2
11Alexandr11 [23.1K]

Answer:

C. AB = 5\frac{5}{7}

Step-by-step explanation:

When two polygons are considered similar, the ratio of their corresponding sides would also be equal.

Since ∆ABC and ∆ADE are similar, \frac{AE}{AC} = \frac{AD}{AB}

\frac{7}{4} = \frac{10}{AB}

Cross multiply

7*AB = 10*4

7*AB = 40

Divide both sides by 7 to find AB

\frac{7*AB}{7} = \frac{40}{7}

AB = \frac{40}{7}

AB = 5\frac{5}{7}

6 0
3 years ago
I REALLY NEED HELP QUICK!
Leni [432]

Answer:

y=1/2x-5

Step-by-step explanation:

From the picture you can see that (0, -5) is a point on the function and that (2, -4) is another point. Using these you can find the slope of the function with the equation

(y_{2} -y_{1})/(x_{2}-x_{1} )

We can substitute in the points so it looks like

(-4--5)/(2-0)  or  1/2 which is the slope of the function

Now, since the y-intercept is (0, -5) on the graph, the b part in the slope-intercept form of the equation would be -5, leaving us with the equation y=1/2x-5

4 0
3 years ago
6:
horrorfan [7]

Step-by-step explanation:

charging the phone for 1 minute ,it has 2%

i.e,1----->2

After 2 minutes from that time ,i.e total 3 minutes

it has 6% charge

i.e,3--------->6

from the both the above cases ,1 minute provide 2%=6/3

=2

Hence,

for getting 50%charge=50/2

=25 min

and,for 90 %charge=90\2

=45 min

8 0
2 years ago
What's 3.82e+7 in standard form
kenny6666 [7]
If you simplify, it equals 10.82e.
8 0
3 years ago
Read 2 more answers
Other questions:
  • a store is offering a 20% discount off one item. you also have a coupon for 5$ off one item. Which composite function repressent
    14·1 answer
  • Total approximately 455000 computer programmers are employed in a certain country. By next decade, this number is expected to in
    5·1 answer
  • Find the product <br> -12 • (-2) <br><br> A. 10<br><br> B. 24 <br><br> C. -24<br><br> D. -14
    11·1 answer
  • The potential in a region between x = 0 and x = 6.00 m is V = a + bx, where a = 15.4 V and b = -5.10 V/m.
    9·1 answer
  • QUICK I NEED HELP!!!!!!
    9·1 answer
  • The ratio of girls to boys in a running club was 3:5. There were 15 girls. How many total members were there in total?
    9·1 answer
  • In triangle ABC, if b is the longest side, what can you conclude about angle A?
    7·2 answers
  • Is y=33x proportional or non proportional
    8·1 answer
  • The following are true about a square of a binomial except
    6·2 answers
  • We can think of the division expression 10 divided by 2 1/2 as the answer to the question “how many groups of 2 1/2 are in 10 an
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!