there are 4 new students. they are holding a pep rally to introduce them. how many different ways can they be introduced

Answers

Answer 1
Answer:

Answer:

They can be introduced 24 different ways

Step-by-step explanation:

To find this, use the factorial function (!)

4! = 4 * 3 * 2 * 1 = 24

Answer 2
Answer:

Answer:

They're name and age.

Step-by-step explanation:

Step 1: The student would say his/her name.

Step 2: The student would say his/her age.

Step 3: The student would say his/her birthday.


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Label each pair of triangles with the postulate or theorem that proves the triangles are congruent.

Answers

Answer:

We can conclude that Δ GHI ≅ Δ JKL by SAS postulate.

Step-by-step explanation:

Δ GHI and Δ JKL are congruents because:

1. Their sides GH and JK are equal (9 units = 9 units)

2. Their included angles ∠G and ∠J are equal (62° = 62°)

3. Their sides GI and JL are equal (17 units = 17 units)

Now, we can conclude that Δ GHI ≅ Δ JKL by SAS postulate.

Help!!!! Add. 7 2/15+ 5 2/3+ 9 13/15

A.21 2/3
B.20 2/3
C.22 2/3
D.21 10/15

Answers

7 (2)/(15 ) + 5 (2)/(3) + 9 (3)/(15)

Convert mixed number to improper fraction.

(107)/(15) + (17)/(3) + (148)/(15)

Then change all the denominators into a same number

(107)/(15) +  (85)/(15) +  (148)/(15)

Add all the numerators but let all the denominators be same.

(107+85+148)/(15) = (340)/(15)

Change the improper fraction back into a mixed number..

22  (10)/(15) I see that we can still simplify the fraction.. 

22 (10)/(15) = 22 (2)/(3)

Your final answer is C. 22 (2)/(3)

Yesterday the temperature at noon was 11.4*f, by midnight decreased by 15.7 degrees. What was the temperature at midnight?

Answers

the answer is 27.1 degrees. because 11.4+15.7 = 27.1.

Answer:

its negative 27.1 (-27.1)

Step-by-step explanation:

What does relationship mean in math

Answers

 A relationship between mathematical expressions. Like a fraction and an improper fraction

Emma has 16 crackers she eats some could she still have 16 left?

Answers

you can't take away from 16 and still have 16.

What is the approximate circumference of a circle with a radius of 42.1 km? A. 5565.4 km
B. 1391.3 km
C. 264.4 km
D. 132.2 km

Answers

c.264.4 that should answer your question

Circumference of circle = 2*pi*r
                                     = 2*22/7*42.1
                                     = 264.4 km

Therefore, the circumference of the circle is 264.4 km