GIVING BRAINLIEST TO WHOEVER GETS THE ANSWERRRR

Factor.
f(x) = 2x2 - 7x - 4

Using function concepts, we have that:

The actual percentage of smokers in 2010 was of 23%, while the estimated was of 13%, thus, the model underestimated the percentage by 10%.

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The function is:

[tex]p + \frac{x}{2} = 33[/tex]

In which

The percentage can be written as a function of the number of years, that is:

[tex]p(x) = 33 - \frac{x}{2}[/tex]

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2010 is 2010 - 1970 = 40 years after 1970, thus, the estimate of the percentage in 2010 is:

[tex]p(40) = 33 - \frac{40}{2} = 33 - 20 = 13[/tex]

The actual percentage of smokers in 2010 was of 23%, while the estimated was of 13%, thus, the model underestimated the percentage by 10%.

A similar problem is given at https://brainly.com/question/24481455

17/18 as a decimal is 0.94444444444444.

Answer:

(3.70 - 2.92) / 2.92 = about 0.27%.

Answer:

the correct answer is 20 because 5x8=40/2=20 so Y=20

Answer:

Answer:

Answer:

The number of chirps per minute is 72

Step-by-step explanation:

Here, using the formula given, we want to find the number N representing the number of chirps per minute.

To get this, we shall simply substitute the value of 58 for T in the equation;

Thus;

58 = 50 + (N-40)/4

58 -50 = (N-40)/4

8 = (N-40)/4

4 * 8 = N -40

32 = N -40

N = 40 + 32

N = 72

Step-by-step explanation:

Answer:

x= -2

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7

Step-by-step explanation:

<1. combine like terms.>

<2.divide both sides of the equation by same terms.>

<3.Simplify.>: then Answer while come x= -2

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7

Answer:

×=3

Step-by-step explanation:

6x +3) =21

6x=21 - 3

6x/6x=18/6

x=3

Using sampling classifications, it is found that:

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

Samples are classified as:

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

Item a:

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

Item b:

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

Item c:

A similar question is given at https://brainly.com/question/24188753

Answer:

[tex]\frac{3}{50}[/tex]

Step-by-step explanation:

6% = [tex]\frac{6}{100}[/tex]

= 0.06

= [tex]\frac{0.06}{1}[/tex] × [tex]\frac{100}{100}[/tex]

= [tex]\frac{6}{100}[/tex]

= [tex]\frac{3}{50}[/tex]

Step-by-step explanation:

[tex] \sin(60 - \theta) \sin(60 + \theta) \\ = \{ \sin(60) \cos( \theta) - \sin( \theta) \cos(60) \} \{ \sin(60) \cos( \theta) + \cos(60) \sin( \theta) \} \\ = \{ \frac{ \sqrt{3} }{2} \cos( \theta) - \frac{1}{2} \sin( \theta) \} \{ \frac{ \sqrt{3} }{2} \cos( \theta) + \frac{1}{2} \sin( \theta) \} \\ \\ [/tex]

from difference of two squares:

[tex]{ \boxed{(a - b)(a + b) = ( {a}^{2} - {b}^{2} ) }}[/tex]

therefore:

[tex] = \{ {( \frac{ \sqrt{3} }{2}) }^{2} { \cos }^{2} \theta \} - \{ {( \frac{ \sqrt{3} }{2} )}^{2} { \sin }^{2} \theta \} \\ \\ = \frac{3}{4} { \cos }^{2} \theta - \frac{3}{4} { \sin}^{2} \theta[/tex]

factorise out ¾ :

[tex] = \frac{3}{4} ( { \cos }^{2} \theta - { \sin}^{2} \theta) \\ \\ = { \boxed{ \frac{3}{4} \cos(2 \theta) }}[/tex]

Answer:

which number

every of them?

Answer:

[tex] \frac{6}{7} [/tex]

Step-by-step explanation:

[tex] \frac{5}{7} - ( - \frac{1}{7} )[/tex]

[tex] \frac{5}{7} + \frac{1}{7} [/tex]

[tex] = \frac{6}{7} [/tex]

Answer:

what question?...........

Answer:

16

Step-by-step explanation:

solve expression using pemdas

(shown in image)

Answer:

16

Step-by-step explanation:

(-7+3^2)8

(-7+9)8

(2)8

16

Hope that helped! (Please mark brainliest)

Answer:

30

Step-by-step explanation:

Answer:

1. 6- (-3)

= 9°C

2. 7-(-7)

=14°C

3.-5-(-1)

= 4°C

4. 5-(-2)

=7°C

5. 130 - (-110)

=240°C

Step-by-step explanation:

By Completing the Square,

[tex]\begin{align}f(x)&=-2x^2+4x+6\\&=-2(x^2-2x)+6\\&=-2(x^2-2x+1)+8\\&=-2(x-1)^2+8 \end{align}[/tex]

Since the first tern is at most zero, the maximum value occurs when

[tex]x=1, f(x)=8[/tex]

The quotient of three more than a number and six is nine.

[tex] \underline{ \boxed{ \large{ \sf{ \frac{(3 + n)}{6} = 9}}}}[/tex]

The value of the unknown number is 51

From the given statement we can form the following equations;

let the unknown number = x

Three more than a number:

= 3 + x

The quotient of three more than a number and six:

[tex]= \frac{x+ 3}{6}[/tex]

The result of this division is 9;

[tex]\frac{x+ 3}{6} = 9[/tex]

The value of this unknown number is calculated as;

[tex]\frac{x+ 3}{6} = 9\\\\x+3 = 54\\\\x = 54 - 3\\\\x = 51[/tex]

Thus, the value of the unknown number is 51

Learn more here: https://brainly.com/question/603134

Answer:

3 > -7

Step-by-step explanation:

-9 < 21

/-3   /-3

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

3 < -7

Now, whenever you divide or multiply by a negative, you will change the inequality sign.

So, 3 < -7 becomes 3 > -7

Answer:

3 > -7

Step-by-step explanation:

-9/ -3 = 3

21/ -3 = -7

3 = -7

3 > -7

Answer:

5

Step by step explaination

Step-by-step explanation:

Given,

a=t

b=2

-2ab=-2×t×2 = -4t

-3a+b=-3×t+2= -3t+2

Hi there!  

»»————-　★　————-««

I believe your answer is:  

[tex]n = 8 + 6m[/tex]

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]\boxed{\text{Solving for 'm'...}}\\\\n - 6m = 8\\------------\\\rightarrow n - 6m = 8 \\\\\rightarrow n - 6m + 6m = 8 + 6m\\\\\rightarrow \boxed{n = 8 + 6m}[/tex]

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

[tex]\large \mathfrak{Solution : }[/tex]

Yes, 2.86 × 10⁸ is written in the scientific notation. it can be also expressed as expanded form :

Answer:286 000000

Step-by-step explanation:Scientific notation can be used to represent very large or very small numbers. A number written in scientific notation will have a non-zero digit to the left of the decimal point, multiplied by a power

ten , with an exponent corresponding to the number of places the decimal will move.

Step-by-step explanation:

(-x)-12=16

-x=28

x=28

plss mark brainliestttt

No the larger the number the steeper the slope. 1 would be a steeper slope than a number less than 1.

The dimension of a room is the length and width of the room.

From the question, we have:

[tex]L \to[/tex] Number of feet

(a) An expression for the length of the room in yards

In standard unit of conversion

[tex]1ft = \frac{1}{3} yd[/tex]

Multiply both sides by L:

[tex]L \times 1ft = L \times \frac{1}{3} yd[/tex]

[tex]L\ ft = \frac{L}{3} yd[/tex]

Hence, the length of the room in yard is L/3

(b) An expression for the length of the room in unit of 3ft

In (a), we have:

[tex]L \to[/tex] Number of feet

To calculate the length in units of 3 feet, we simply multiply L by 3

[tex]Unit = 3 \times L[/tex]

[tex]Unit = 3L[/tex]

An expression for the length of the room in unit of 3ft is 3L

(c) How many times longer the room is, than 3ft.

In (b), we have:

[tex]Unit = 3L[/tex]

The number of times (n) the room is longer than 3 ft is:

[tex]n = Unit \div 3[/tex]

[tex]n = 3L \div 3[/tex]

[tex]n = L[/tex]

The room is longer than 3 feet, in L times

Read more about dimensions at:

https://brainly.com/question/3194540

Answer:

a. L/3

B. L/3

C. L/3

Step-by-step explanation:

trust me, just answered it

Answer:

$408

Step-by-step explanation:

$17 x 30 = $510

100% = 510

20% = taxes

remaining amount = 80%

80% of 510 = 0.80 * 510

0.80 * 510 = $408

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

408

Step-by-step explanation:

I think so check with others

[tex](\frac{2^5}{3^2})^4=\frac{2^{5\cdot4}}{3^{2\cdot4}}=\frac{2^{20}}{3^8}\\\\\text{Answer: A)}[/tex]