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4 years ago

Triangle E D F has sides that are of varying lengths. Side E D has a length of 4 and side E F has a length of 9.

Mathematics

2 answers:

KonstantinChe [14]4 years ago

5 0

Answer:

DE + EF > DF

5 < DF < 13

Triangle DEF is a scalene triangle

Step-by-step explanation:

Got it right on Edge.

9966 [12]4 years ago

3 0

Answer:

D E + E F greater-than D F

5 less-than D F less-than 13

Triangle D E F is a scalene triangle

Step-by-step explanation:

we know that

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side

we have the triangle EDF

where

$ED=4\ units\\EF=9\ units$

Applying the triangle inequality theorem

$ED+EF > DF\\4+9 > DF\\13 > DF\\DF < 13\ units$

$ED+DF > EF\\4+DF > 9\\DF > 5\ units$

The length of DF is the interval -----> (5,13)

The triangle DEF is a scalene triangle (the three length sides are different)

therefore

The statements that are true are

D E + E F greater-than D F

5 less-than D F less-than 13

Triangle D E F is a scalene triangle

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erastova [34]

Answer:

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Step-by-step explanation:

3 0

3 years ago

A security alarm requires a four-digit code. The code can use the digits 0–9 and the digits cannot be repeated.

never [62]

Answer:

The answer is C

Explanation: Given:A security alarm requires a four-digit code. The code can use the digits 0–9 and the digits cannot be repeated.

there is only 2 numbers which are greater than 7 i.e. 8 and 9. ∴ there is 2 possibility for first place.

For the remaining 3 digits there is 9 possibilities (including 1 which would left after choosing 1 from first place )

No of ways for the alarm code beginning with a number greater than 7= 2 P 1 x 9 P 3

Total ways of code with 4 digits= 10 P 4. Hope this helps :)

7 0

3 years ago

Read 2 more answers

What is the value of the expression 3.9x10^5/1.3x10^2?

kvv77 [185]

Answer: 3 * 10 ^3

Step-by-step explanation:

Divide the numbers

3.9 / 1.3

Subtract the powers of 10

10^5 / 10^2 = 10 ^ (5-2) = 10^3

The result is 3 * 10 ^3

4 0

3 years ago

Isabel lives 3/4 mile from school.Janet lives 2/3 mile from school.how much farther,in miles does Isabel live from school than J

Marianna [84]

First find LCM (least common denominator) which is 12
so now u have 3/4 x 3= 9/12 and 2/3 x 4 = 8/12
now add 9/12 + 8/12 to get answer
try the rest on your own hope dis helped ✌️

7 0

4 years ago

Read 2 more answers

In triangle ABC, A is a right angle, and mB = 45°. Find BC. If your answer is not an integer, leave it in simplest radical form.

Nikolay [14]

This triangle is called a 45-45-90 triangle, and the side ratio for the sides opposite to the 45-45-90 degree angles respectively are 1-1-sqrt2

Now we know one side is 6 and its opposing the 45 degrees angle and BC is opposing the 90 degrees angle the ratio between the sides are 1:sqrt2

Therefore BC=6*sqrt2=6sqrt2

Thus B is the correct answer!

Hope this helped any questions just leave them in the comments of this answer.

3 0

3 years ago