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ahrayia [7]
4 years ago
14

PLEASE HELP Use the squared identities to simplify 2cos2x cos2x.

Mathematics
1 answer:
galben [10]4 years ago
6 0

Answer:

D

Step-by-step explanation:

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Esteban is shopping for a bookshelf. He has 58 non-fiction books and 145 fiction books. He wants each shelf to have the same num
emmasim [6.3K]

Answer:

7

Step-by-step explanation:

Criteria:

• same number of books on each shelf

 ⇒find a number that divides 58 and 145

• greatest number of books on each shelf

 ⇒find the greatest number that divides 58 and 145

Find the GCF of 58 and 145.

58 = 2 ⋅ 29

145 = 5 ⋅ 29The GCF of 58 and 145 is 29.

Each shelf will contain 29 books.

There are 203 total books (because 58 + 145 = 203).

Divide 203 by 29 to find the number of shelves there should be.

203 / 29 = 7

Therefore, there will be 7 shelves.

5 0
2 years ago
Kevin and Randy Muise have a jar containing 84 coins, all of which are either quarters or nickels. The total value of the coins
ella [17]
Dm for the answer can’t do it right now
4 0
4 years ago
53w + 13 < 56w + 16 solve for w
Sergio039 [100]

Answer:

w>-1

Step-by-step explanation:

1 Move terms

53w-56w<16-13

2 Collect like terms then subtract

-3w< 3

3 Divide both sides by -3

Answer: w>-1

4 0
4 years ago
Read 2 more answers
If y varies directly as x, and the constant is -3, what is the equation?
vladimir1956 [14]

Answer:

y = -3x

Explanation:

k = -3

y ¤ x......where ¤ represents the Greek alpha sign

y = k • x

y = -3 • x

y = -3x

5 0
3 years ago
Read 2 more answers
On a certain hot​ summer's day, 391 people used the public swimming pool. The daily prices are $1.25 for children and $2.25 for
igomit [66]

Number of adults = 264

Number of children= 127

Step-by-step explanation:

Let the number of adults be......x

Let the number of children be.....y

The total number of people that used the public swimming pool is given as 391. This means

x+y=391

The total cost per the receipt is : $752.75

This means, 2.25 x+ 1.25 y = 752.75

The two equations are;

x+y=391  ...........(i)

2.25 x+ 1.25 y = 752.75...........(ii)

Making the x variable equal to eliminate x

2.25x + 2.25 y = 879.75

2.25x + 1.25 y = 752.75

Apply subtraction as

1.00 y = 127.00

y=127

Use the value of y in equation (i)

x+y=391

x+127=391

x=391-127=264

Number of adults = 264

Number of children= 127

Learn More

Simultaneous equations: brainly.com/question/12318095

Keywords ; public, swiming pool, prices, daily, adults, children, receipt, admission

#LearnwithBrainly

7 0
4 years ago
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