3 years ago

Find the missing side of each triangle. Help please !!

Mathematics

1 answer:

Sveta_85 [38]3 years ago

8 0

Answer:

1)12²+9²=225

X=15km

2)12²+x²=13²

x²= 169-144

x²=25

x=5mi

You might be interested in

Solve for x. 7(x - 3) = 4(x 5) x = x = x = x = user: which of the following is the solution set of the given equation? (x - 3) -

katrin2010 [14]

7(x - 3) = 4(x + 5)
7x - 21 = 4x + 20
7x - 4x = 20 + 21
3x = 41
x = 41/3

(x - 3) - 2(x + 6) = -5
x - 3 - 2x - 12 = -5
-3x - 15 = -5
-3x = -5 + 15
-3x = 10
x = -10/3

7 0

4 years ago

Show that 21^n, n €N can never ends with 0,2,4,6 and 8

erastovalidia [21]

Answer:

Step-by-step explanation:

$21 ^n = (3 \times 7)^n$

21 has no 2 in it's prime factorization. So it can never end in 0, 2 , 4 , 6 , 8.

Odd number raise to any number is always odd, Which does not include 2, 4, 6 , 8.

So $21^n$ does not end with 0, 2, 4 , 6 , 8.

6 0

3 years ago

you have $60 and your sister has $120. You are saving $7 per week and your sister is saving $5 per week. How long wil it be befo

lora16 [44]

Answer:30 weeks

Step-by-step explanation:

60+7w=120+5w

2w=60w=30

6 0

3 years ago

Antonia is factoring the polynomial, which has four terms. 7x3 – 21x2 + 5x – 15 7x2(x – 3) + 5(x –3) Which is the completely fac

Vikentia [17]

Factoring out (x-3), we get (7x^2+5) (x-3). That is your answer, I hope this helps :).

8 0

3 years ago

Read 2 more answers

Say you have a 68 for your math grade. And you got a 100 on a test. What will your math grade be now.

zzz [600]

Prob 70-74 depending on your school grading system

8 0

3 years ago