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3 years ago

Factorize cos2A - 5 cosA + 6

Mathematics

1 answer:

Tamiku [17]3 years ago

5 0

Answer:

Let's assign the variable x to cosA. The expression then becomes x² - 5x + 6. To factorize this we need to find two numbers that have a sum of -5 and a product of 6; these numbers are -2 and -3 so the expression becomes (x - 2)(x - 3). Since we know that x = cosA the final answer is (cosA - 2)(cosA - 3).

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What's n = 3 x 45 for 5th grade math please cause I'm not sure how this math goes

Drupady [299]

N=135. 45+45+45=135.

6 0

3 years ago

8090 [49]

They each get 14 cents,
A quarter = 25c
A nickel = 5c
A dime = 10c
2 pennies = 2c

25 + 5 + 10 + 2 = 42c

42 divided by 3 is 14 cents
So Willie, Donald and Maya get 14 cents each

5 0

2 years ago

Carnival T charges an entrance fee of $7.00 and $0.50 per ticket for the rides. Carnival Q charges an entree fee of $12.00 and $

FrozenT [24]

Answer:

$30

Step-by-step explanation:

Calculation for the tickets that must be purchased for Carnival T and Carnival Q to be the same

Based on the information given let x be the number of ticket to be purchased .

Carnival T entrance fee= $7.00

Ride= $0.50 per ticket

Carnival Q entree fee =12.00

Ride= $0.25 per ticket

Tickets=$7.00 + ($0.50* x) = $12.00 + ($0.25* x)

.25 x = 5.00

Hence:

x=$.25+$5.00

×=$30

Therefore the amount of tickets that must be purchased in order for the total cost at Carnival T and Carnival Q to be the same will be $30

3 0

2 years ago

What is the value of q − 7 if q = −17?

sdas [7]

Answer:

-24

Step-by-step explanation:

-7 - 17 = -24.

3 0

9 months ago

Read 2 more answers

Q16. Find x^2 + 1/x^2 , if x + 1/x = 3

erica [24]

Answer:

$2 \times x \times \frac{1}{x} = 2 \\ {x}^{2} + {y }^{2} + 2xy = {(x + y)}^{2} \\ {x}^{2} + \frac{1}{ {x}^{2} } + 2 = {(x + \frac{1}{x} })^{2} = {3}^{2} = 9$

8 0

2 years ago