How many different arrangements of the letters in the word "ALGEBRA" are there?

Mathematics

2 answers:

Alexxx [7]3 years ago

7 0

Ok, so I have to pick a first letter. I have 7 choices so that'll be my first number:

for the 2nd letter there are 6 options left.

This narrows down until 1 so the answer is 1 x 2 x 3 x 4 x 5 x 6 x 7 or 7 factorial. This equals 5040.

posledela3 years ago

4 0

Answer:

Step-by-step explanation:

would 3.5 be the answer

You might be interested in

Math riddle here

kupik [55]

Answer:

15+8+6+2=31

Step-by-step explanation:

highest no. is 15

15-7=8

31-15-8=8

middle number 8

8-6=2

CHECK: 15+8+6+2=31

i don't know if my answer is right haha

i checked online it says the answer is 5,6,8,12

4 0

3 years ago

HELP ASAP!!

Tresset [83]

By definition, two angles are supplementary if the sum of them is 180 degrees. In this case (see figure attached with the answer) the line AD is transversal to lines AB and DC. This is a proof of the Same-side interior angle theorem.

This theorem states that if we have two lines that are parallel and we intercept those two lines with a line that is transversal to both, same-side interior angles are formed, and also sum 180º, in other words, they are supplementary angles.

Then:

By the definition of a parallelogram, AB∥DC. AD is a transversal between these sides, so ∠A and ∠D are same-side interior angles. Because AB and DC are parallel, the same-side interior angles must be supplementary by the same-side interior angles theorem. Therefore, ∠A and ∠D are supplementary.