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timofeeve [1]
3 years ago
10

Prove sinxsin2x+cosxcos2x=cosx

Mathematics
1 answer:
Rom4ik [11]3 years ago
6 0
Prove sinxsin2x+cosxcos2x=cosx

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B) (x + 4) 1999 = 1<br> Find x
gulaghasi [49]

Answer:

Step-by-step explanation:

(X+4)1999=1

Open the bracket by multiplying 1999 by the values in the bracket

1999x + 7996 = 1

Collect like terms

1999x = 1-7996

1999x = -7995

Divide both sides by 1999

X = -3.99

8 0
3 years ago
The larger of to numbers is 12 more than the smaller. Their sum is 84. What are the two numbers?
Nataly_w [17]
36 and 48

a = b+12
a+b = 84

(b+12) + b =84
2b +12 = 84
2b = 72
b= 36

a = b + 12
a = 36 + 12
a = 48
3 0
3 years ago
What is the range of possible sizes for side x?<br> 3.2<br> x<br> 5.5
ladessa [460]

Answer: try multiplication for the answer or use photomath

Step-by-step explanation:

3 0
3 years ago
There is an outbuilding that has an area of 80 square feet. The rectangle on the blueprint that represents the outbuilding has a
Tanya [424]

Answer:

B) 4

Step-by-step explanation:

There is an outbuilding that has an area of 80 square feet. The rectangle on the blueprint that represents the outbuilding has an area of 20 square inches. If the actual outbuilding has a wall length of 10 feet, what is the length of that wall on the blueprint . A) 3 B) 4 C) 5 D) 6

The length of the wall on the blue print can be calculated as:

20 square feet ÷ 5

= 4 feet

8 0
3 years ago
HELP PLEASE HELP HELP
kupik [55]
I think it’s 0but not s
5 0
2 years ago
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