PLEASE PLEASE HELP

simplify:
tan²a (2 cos²a + sin²a − 1)

Answer:

Do you have any numbers?

Answer:

c. (10.1, 15.7)

Step-by-step explanation:

The calculation of the 95% confidence interval is shown below:

Given that

n = sample = 14

average = [tex]\bar x[/tex] = 12.9

Standard deviation = s = 4.9

Based on the above information

[tex]\alpha = 1 -0.95 = 0.05[/tex]

n - 1 = 14 - 1 = 13

[tex]t_{\alpha}\ value = 2.16[/tex]

Now the 95% confidence interval is

[tex]= \bar x + \pm\ t \times \frac{s}{\sqrt{n} } \\\\= 12.9 \pm 2.16 \times \frac{4.9}{\sqrt{14} } \\\\= 12.9 \pm 2.8287[/tex]

= (10.1, 15.7)

hence, the correct option is c.

Answer:

Decimal: -0.5

Fraction: - 1/2

Step-by-step explanation:

If, on the other hand, the balance is growing exponentially, f(x)=800(1+0.13)x where x represents the number of months, what would the balance be after 34.9 months is: $56,954.45.

Using the given exponential to determine what would the balance be after 34.9 months.

f(x)=800(1+0.13)x

Where:

x=number of months

Hence:

f(x)=800(1+0.13)x

f(x)=800(1+0.13)^34.9

f(x)=800(1.13)^34.9

f(x)=800(71.19306287)

f(x)= $56,954.45

Therefore if, on the other hand, the balance is growing exponentially, f(x)=800(1+0.13)x where x represents the number of months, what would the balance be after 34.9 months is: $56,954.45.

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Money Mark makes for $3300, he invested = $363

The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.

It's given that Mark is investing his money. He thinks that he should make $11 for every $100 he invests.

Now by using the basic unitary method we can solve the problem as :

Money Mark makes for every $100 he makes = $11

Money Mark makes for every $1 he invested  = $ 11 / 100 = $0.11

Money Mark makes for $3300 he invested = 0.11 x 3300 = $363

Therefore, money Mark makes for $3300, he invested = $363

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The system of equations 16 + 4 y + 5 x = 0 and - 48 - 12 y = - 9 x will have the solution as x = 0 and y = - 4.

We are given a system of equations as:

16 + 4 y + 5 x = 0    … (1)

- 48 - 12 y = - 9 x

- 16 - 4 y = - 9 x

9 x - 16 = 4 y   … (2)

Substitute the equation (2) in the equation (1), we get that:

16 + 9 x - 16 + 5 x = 0

14 x = 0

x = 0

4 y = 9 ( 0 ) - 16

4 y = - 16

y = - 16 / 4

y = - 4

Therefore, we get that, the system of equations 16 + 4 y + 5 x = 0 and - 48 - 12 y = - 9 x will have the solution as x = 0 and y = - 4.

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Answer:

x =23

Step-by-step explanation:

ok first, the full degree of a straight line is 180°

subtract 38° out of 180°

180-38= 142

so 6x+4= 142°

subtract 4 from both sides of the equation

6x +4 -4= 142-4

6x=138

divide 6 from 6x and 138

x=23

[tex] \Large{\boxed{\sf x = 4}} [/tex]

[tex] \\ [/tex]

Solving this equation means finding the value of 'x' that makes the equality true.

[tex] \\ [/tex]

Given equation:

[tex] \sf -12 + 5x - x = x - 7 + 7 [/tex]

[tex] \\ [/tex]

Combine like terms:

[tex] \sf -12 + (5x - x) = x + (-7 + 7) \\ \\ \sf -12 + 4x = x [/tex]

[tex] \\ [/tex]

Now, we move the variables to the right side of the equation by subtracting 4x from both sides:

[tex] \sf -12 + 4x - 4x = x - 4x \\ \\ \sf -12 = -3x [/tex]

[tex] \\ [/tex]

Finally, divide both sides of the equation by the coefficient of the variable, -3:

[tex] \sf \dfrac{-12}{-3} = \dfrac{-3x}{-3} \\ \\ \\ \boxed{\boxed{\sf x = 4}} [/tex]

[tex] \\ \\ [/tex]

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Answer:

5 feet and 60 inch

Step-by-step explanation:

5 feet and 60 inches

Step-by-step explanation:

Answer:

?=5

Step-by-step explanation:

6/3=2

10/2=5

The total amount of money is 65x + 10 cents.

Given the following coins value

x dimes, (x+2) nickels, and 2x quarters

If value of a dime is 10 cents, nickel is 5 cents, and a quarter is 25 cent, the the total coin is cent is expressed as 10x + 5(x + 2) + 25(2x)

Total in cents. = 10x + 5(x + 2) + 25(2x)

Total in cents = 10x + 5x + 10 + 50x

Simplify

Total in cents = 65x + 10

Hence the total amount of money is 65x + 10 cents.

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Answer:

I believe you cancel out values if there are the same ones for the numerator and dominator.

For example:

[tex]\frac{x^4+x^2+x-3}{x^4+x^3-3}[/tex]

Since both the numerator and dominator have [tex]x^4[/tex] and -3, you are able to cancel them out.

This would leave you with [tex]\frac{x^2+x}{x^3}[/tex]

Notes: the exponents have to be the same number in order to cancel out the values.

Answer:

  11.  C) x +1

  12.  B) x -1

Step-by-step explanation:

You want the simplified form of a couple given rational expressions.

Each of the polynomials can be factored by pairs. Common factors can be cancelled.

Factoring numerator and denominator pairwise, we have ...

  [tex]\dfrac{x^3+2x^2-x-2}{x^2+2x-x-2}=\dfrac{x^2(x+2)-1(x+2)}{x(x+2)-1(x+2)}=\dfrac{(x^2-1)(x+2)}{(x-1)(x+2)}\\\\=\dfrac{x^2-1}{x-1}=\dfrac{(x+1)(x-1)}{(x-1)}=\boxed{x+1}[/tex]

Factoring the numerator pairwise,, we have ...

  [tex]\dfrac{x^5-x^4+x^3-x^2+x-1}{x^4+x^2+1}=\dfrac{x^4(x-1)+x^2(x-1)+1(x-1)}{x^4+x^2+1}\\\\=\dfrac{(x^4+x^2+1)(x-1)}{(x^4+x^2+1)}=\boxed{x-1}[/tex]

Answer:

Answer: (A)  [(6 x 1.5) - 2] ÷ 2

Step-by-step explanation:

Find the cost of 6 pounds of apples:

1 pound = $1.50

6 pounds = 6 x 1.5

Price after discount:

Discount = $2

Price after discount = (6 x 1.5) - 2

The cost is shared with her friend:

One person = [(6 x 1.5) - 2] ÷ 2

Answer: (A)  [(6 x 1.5) - 2] ÷ 2

Answer:

1.62 × 10⁸

hope it helps!

Answer:

chance of wanted outcome/all possible outcomes

Step-by-step explanation:

Answer:

-7x

Step-by-step explanation:

-6x - x =

-7x

Answer:

1) 13/20

2) 100

3) 2^6

Answer:

-4x/-2y

Step-by-step explanation:

16x - y - 4x + 1

---------------------

16x - y - 2y - 1

= - 4x/- 2y

Hope this helped!

Answer: 1.54166666667 Hope that helped

Answer:48

Step-by-step explanation:

Step-by-step explanation:

–5/6 + 7/5 = –25/30 + 42/30

= 17/30

Answer:

c

Step-by-step explanation:

the answer is c) somae

Answer:

99.897%

Step-by-step explanation:

Answer: 99.87%

Step-by-step explanation:

Answer:

SAS Translation

Step-by-step explanation:

The triangle just moved over, it didn't rotate or flip.

Answer: 20%

Step-by-step explanation:

32/40

Divide both by 2

16/20

Multiply by 5

80/100

Subtract 80 by 100

Answer: 20

Answer:−589.86

Step-by-step explanation:

let unknown number be x

Solve for x

655.4+x=65.54

Subtract 655.4 from both sides.

x=65.54−655.4

Subtract 655.4 from 65.54 to get −589.86.

x=−589.86

Answer:

6inch

Step-by-step explanation:

Read the excerpt from The Crisis, Number I by Thomas Paine.

“I once felt all that kind of anger, which a man ought to feel, against the mean principles that are held by the Tories: a noted one, who kept a tavern at Amboy, was standing at his door, with as pretty a child in his hand, about eight or nine years old, as I ever saw, and after speaking his mind as freely as he thought was prudent, finished with this unfatherly expression, ‘Well! give me peace in my day.’ Not a man lives on the continent but fully believes that a separation must some time or other finally take place, and a generous parent should have said, ‘If there must be trouble, let it be in my day, that my child may have peace;’ and this single reflection, well applied, is sufficient to awaken every man to duty.”

Which is a central idea of this excerpt?

Paine feels that everyone should be able to speak freely, which is why he supports independence.

Paine believes that colonists should fight for independence so their children can live in peace.

Paine believes that some people are selfish and place their needs above others.

Paine felt anger for the first time when he saw an interaction between a Tory and a child.

Answer:

factor 4 out of 12-8t

4(3-2t)

Answer:3

Step-by-step explanation GCF of 6 and 9 is 3.

Answer: The answer is everytime you mutiply in by 0.6

Step-by-step explanation: