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mixas84 [53]
3 years ago
5

(k) 1 + tan 4A . tan 2A = sec 4A.

Mathematics
2 answers:
Vlad [161]3 years ago
6 0

it was a long proof...

follow the caption and steps and you'll understand it

Vsevolod [243]3 years ago
6 0

proved...

Step-by-step explanation:

this is too easy method to solve this problem

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What is the greatest common factor of 12 and 18?<br> A. 2 B. 6 C. 4 D. 12
S_A_V [24]

Answer:

B. 6

Step-by-step explanation:

D. 12 cant be multiplied to get 18

C. 4 cant be multiplied to get 18

A. 2 is a common factor of 12 and 18 but not the greatest.

B. 6 times 2 is 12 and 6 times 3 is 18 so 6 is the greatest common factor.

4 0
3 years ago
Read 2 more answers
A runner, training for a competition, ran on a track every day for 10 weeks. The first week he ran 8 kilometers each day of the
Levart [38]

Answer:

Total = 686000 meters for 10 weeks 7 days a week.

Step-by-step explanation:

Let's solve this by doing the increase on just 1 training day per week. Then we can find the grand total for 7 days a week by multiplying by 7

a = 8000

n = 10

d = 400

Sum = (a + L)*n/2

  • L = a + (n - 1)*d
  • L = 8000 + (10 - 1)*400
  • L = 8000 + 9*400
  • L = 8000 + 3600
  • L = 11600 meters

Sum = (8000 + 11600)*10/2

Sum = 19600 * 10/2

Sum = 98000 meters.

This total represents 1 training day a week.

The total amount is 7 times this figure.

Total = 7 * 98000 = 686 000 meters.

3 0
3 years ago
If f(x)=3/x+2-square root of x-3 what is f(19)
jasenka [17]

Answer:

-27/7

Step-by-step explanation:

Replace x with 19,

f(19)=3/(19+2) - root(19-3)

      =3/21 - root(16)

      =1/7 - 4

      =1/7 - 28/7

      = -27/7

5 0
3 years ago
Problem IDPRAQT48 At the beginning of a trip, a car's gasoline tank contained 14 1/5 gallons of gas. At the end of the trip, it
Kryger [21]

Answer:

5 8/15 Gallons

Step-by-step explanation:

Step 1: Change mixed numbers into improper fractions.

14 1/5 = 71/5

8 2/3 = 26/3

Step 2: Change the improper fractions to have the same denominator.

71/5 = 213/15

26/3 = 130/15

Step 3: Subtract

213/15 - 130/15 = 83/15

Step 4: Simplify

83/15 = 5 8/15

Hope this helps! :D

8 0
3 years ago
Aiden wants to find the mass of a bowling ball what unit should he use?
Airida [17]
Kilograms is what measurement to use. 
5 0
3 years ago
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