Express cos9x cos3x as a sum of two trigonometry function ​

Answer:

76°

Step-by-step explanation:

Angles adjacent to equal sides of a triangle are equal.

Exterior angle

= Sum of interior opposite angles

= 38° + 38°

= 76°

Let the small , medium and large baskets be denoted by s,m & l

Formulating the equations

s+m+l= 80--------- equation1

$15.75s+ $25 m + $32.5l = $2086.25------equation2

2s=l---------equation 3

Using the technology  s=15, m=35 and l= 30

15+35+30= 80--------- equation1

$15.75(15)+ $25 (35)+ $32.5 (30) = $2086.25------equation2

2(15)=(30)---------equation 3

Yes because multiple variables can be easily calculated through matrices using technology

In Matrix form

[tex]\left[\begin{array}{ccc}1&1&1\\15.75&25&32.5\\-2&0&1\end{array}\right][/tex] [tex]\left[\begin{array}{c}s\\m\\l\end{array}\right][/tex]     = [tex]\left[\begin{array}{c} 80\\2086.25\\0\end{array}\right][/tex]

Let A= [tex]\left[\begin{array}{ccc}1&1&1\\15.75&25&32.5\\-2&0&1\end{array}\right][/tex]

Z= [tex]\left[\begin{array}{c}s\\m\\l\end{array}\right][/tex]    

B = [tex]\left[\begin{array}{c} 80\\2086.25\\0\end{array}\right][/tex]

Z= A⁻¹ B

A⁻¹= A mod/ det A

det A= -1

Using the technology  s=15, m=35 and l= 30

15 small baskets,

35 medium baskets

30 large baskets were sold.

Part C:

15+35+30= 80--------- equation1

$15.75(15)+ $25 (35)+ $32.5 (30) = $2086.25------equation2

236.25+ 875+ 975=$2086.25

$2086.25=$2086.25

2(15)=(30)---------equation 3

Answer 2:

Yes because multiple variables can be easily calculated using technology.

N.B There is a typing error in question its $2086.25 not 52086.25

Answer:

I think 72 inches I might be wrong

Answer:

50%

Step-by-step explanation:

Because the coin has two sides, heads and tails, there is a 50% chance that it will land on tails.

1/2

Answer:

-7.11111111111

Step-by-step explanation:

Answer: the second to last

Step-by-step explanation: because there’s no multipcation in the first box and if you look at the rest it wou make sense for it to be the second to last

Answer:

766?

Step-by-step explanation:

Answer and Step-by-step explanation:

Three Digit Number.

***

Second digit = Last digit

*xx

I multiplied 45 from numbers 1-23, with 22 being the maximum # to multiply to get a 3 digit number that is divisible by 45, and 3 being the minimum # to multiply to get a 3 digit number that is divisible by 45.

Now to check which number it is.

When you multiply 45 by 17, you get 765. This number is supposed to be 1 less than the riddle's number. It also has to have the last 2 digits be the same.

So, lets add one to 765 to see if we solved the riddle.

765 + 1 = 766

766 is the answer!

#teamtrees #PAW (Plant And Water)

I hope this helps!

Answer:

12 cm squared

Step-by-step explanation:

1. Since diameter is twice the radius and what we know is the area, you would divide the area, 113.1 cm, by Pi (3.14):

113.1 cm / 3.14 = 36.00084813

2. What you get is the radius which you have to square:

36.00084813 squared = 6.000070677

3. Now you double the radius in order to get the diameter:

6.000070677 x 2 = 12.00014135

12.0 cm squared

Answer:

Uhh i dont rly know sry

Step-by-step explanation:

Answer:

Step-by-step explanation:

17*4=68

68-18=50

50-15=35

35-16=19

19

Answer:

433

Step-by-step explanation:

433. . . . . . . ............,.. srry it made me write this much to answer

Answer:

Step-by-step explanation:

Employee's salary: $52,000

Months in a year: 12

52000 / 12 = 4,333.333(r)

Closest answer: D

Answer:

3. MNP = OPN

Step-by-step explanation:

the second could be as well, but the sequence is the same for the third option, thus the second option is wrong

Answer:

B

Step-by-step explanation:

It implies that his plane ticket and other expenses should all be less than the $2000 he has saved.

Answer:

Any value you choose for x will make the equation a TRUE statement.

[tex] \boxed{ \boxed{ \: \: \: \: 1.4 \: \: \: \: }}[/tex]

[tex] \hookrightarrow \: \dfrac{2a + 3b}{3b} [/tex]

[tex] \hookrightarrow \: \dfrac{2a}{3b} + \dfrac{3b}{3b} [/tex]

[tex] \hookrightarrow \: \dfrac{2a}{3b} + 1[/tex]

[tex] \hookrightarrow \: \big(\dfrac{2}{3} \times \dfrac{a}{b} \big) + 1 [/tex]

[tex] \hookrightarrow \: \big(\dfrac{2}{3} \times 0.6 \big) + 1[/tex]

[tex] \hookrightarrow \:( 2 \times 0.2) + 1[/tex]

[tex] \hookrightarrow \: 0.4 + 1[/tex]

[tex] \hookrightarrow \: 1.4[/tex]

Answer:

Why do you keep sending the same question over and over again?

Step-by-step explanation:

Total Time Taken = 16secs

10a). We're asked to calculate the rate of speed change for the first 5secs.

This is another way of saying "Calculate Acceleration" in the first 5sec of Motion.

Why?

Acceleration is the rate of change of speed or the rate at which speed changes.

acceleration = v - u/t

where v = Final Speed

u = initial Speed.

Looking at the graph

You see that

Initial speed(u) = 1m/s

Final Speed(v) = 9m/s

t = 5secs

Acceleration = 9 - 1/ 5

a = 8/5

a = 1.6m/s².✅

10b)

We're asked to calc "t" from the graph.

Given that the acceleration at "t" untill 16sec(end of motion) is 2m/s².

This simply means that Constant Acceleration was held from "t" to the end of the Motion.

Do not confuse Constant Acceleration for Constant Velocity.

At Constant Velocity... Acceleration is zero(0)

At Constant Acceleration...Velocity Changes Uniformly or at the same rate each second and this is what we're dealing with in this question.

Taking the same step as we used in calculating acceleration above

Given a= 2m/s²

a = v - u/∆t

Where ∆t means time change or difference.

From "t" to 16

The change in time is 16 - "t"

2 = 21 - 9/( 16 - t)

2 = 12/16-t

16-t = 12/2

16 - t = 6

t = 16 - 6

t = 10secs.✅

Have a great Day!.

Answer:

Its A   x=2

Step-by-step

so i told siri pick a number 1-4 and she picke 1 and it was right so good luck

Answer: x = 2

Step-by-step explanation:

got it right

Answer:

-2

Step-by-step explanation:

when x=0 y=-2... it is a decline

Answer:

gien

Step-by-step explanation:

Answer:

x = 7 would be the correct answer to your question.

I hope this helped! :D

Answer:

-i

Step-by-step explanation:

i^2=-1, so i^151=[(i^2)^75] * i=> [(-1)^75]*i=(-i)

Step-by-step explanation:

[tex] \frac{27}{5} = \frac{4}{x} \\ 27 \times x = 4 \times 5 \\ 27x = 20 \\ \frac{27x}{27} = \frac{20}{27} \\ x = \frac{20}{27} [/tex]

Answer:

The last option 8x + 4 = 196

Step-by-step explanation:

8x + 4 = 196

8x = 192

x=192/8

x=24

The strategy that can help solve this word problem is : If x represents the number of pencils per box, solve the equation 8x + 4 = 196.

A strategy is an approach that leads someone to the nearest of the solution of a problem.

Soni has 196 pencils.

Let, one box can accommodate x number of pencils.

Therefore 8 boxes can accommodate 8x number of pencils.

But she has 4 more pencils.

Hence, the required equation is 8x+4=196.

Learn more about the equation here :

https://brainly.ph/question/4246696

#SPJ2

Answer:

-7

Step-by-step explanation:

Amount in her checking and saving account is $255 and $595

Given information:

Total amount in both accounts = $850

Ratio of checking to saving account = 3:7

Find:

Amount in her checking and saving accounts

Computation:

Total of ratio = 3 + 7

Total of ratio = 10

So,

[tex]Amount\ in\ her\ checking\ account = 850 \times \frac{3}{10}[/tex]

Amount in her checking account = $255

[tex]Amount\ in\ her\ saving\ account = 850 \times \frac{7}{10}[/tex]

Amount in her saving account = $595

Learn more:

https://brainly.com/question/19257327?referrer=searchResults

Answer:

10+4x+11=x²-10+10 (add 10 both side)

21+4x-4x=x^2-4x  (substract 4x in both side)

21-21=x^2-4x-21 (substract 21 in both side)

x^2-4x-21=0

x^2+3x-7x-21=0(we can write -4x as (3x)+(-7x)=(-4x)

x(x+3)-7(x+3)=0 (get common factor)

(x+3)(x-7)=0 (get common factor which is (x+3) by both)

x=-3 or x=7

Step-by-step explanation:

You can't round 17 to the nearest tenth of an inch because 17 is a whole number.