PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST​

Recall the half-angle identity,

cos²(x/2) = (1 + cos(x))/2

This means

[tex]\cos^2\left(\dfrac12 \arccos\left(-\dfrac{12}{13}\right)\right) = \dfrac{1 + \cos\left(\arccos\left(-\frac{12}{13}\right)\right)}2 = \dfrac{1 - \frac{12}{13}}2 = \boxed{\frac1{26}}[/tex]

Answer:

C) 180° < theta < 270°

Step-by-step explanation:

Hope this helps

Answer:

x = 54, so the vertical angles are 110°.

Step-by-step explanation:

[tex]2x + 2 = 3x - 52[/tex]

[tex]2 = x - 52[/tex]

[tex]x = 54[/tex]

[tex]2(54) + 2 = 108 + 2 = 110[/tex]

[tex]3(54) - 52 = 162 - 52 = 110[/tex]

Step-by-step explanation:

only option (b) will give u 7x^2 + 16x -15

Answer:

0.003

Step-by-step explanation:

3 ml    =    0.003 L, l

Answer:

area of trapezium: 740 cm²

Step-by-step explanation:

[tex]\sf {Area \ of \ trapezium = \frac{1}{2}* (base \ 1 \ + base \ 2) \ * height }[/tex]

Given here:

using the formula:

[tex]\sf {Area \ of \ trapezium = \frac{1}{2}* (base \ 1 \ + base \ 2) \ * height }[/tex]

solve:

[tex]\sf {\frac{1}{2}* (34 \ + 40) \ * 20}[/tex]

[tex]\sf {\frac{1}{2}* (74) \ * 20}[/tex]

[tex]\sf 74 * 10[/tex]

[tex]\sf 740[/tex]

Answer:

  190 ft deep

Step-by-step explanation:

What the problem doesn't tell you is that "this situation" is the height of the ball relative to the ground level Lisa is standing on. The ball is dropped from a height of 6 feet above that level. The variable 'h' is said to represent the drop height (in feet), so h = 6. Evaluating the expression for t=3.5 will tell the height of the ball relative to ground level after 3.5 seconds.

  -16(3.5)² +6 = -196 +6 = -190

The bottom of the well is 190 feet below ground level.

Answer:

$68.75 cents

Step-by-step explanation:

Given the following question:

25% of 55

In order to find the answer, we must first use the formula to calculate percentages to calculate 25% of 55, then we use that answer to add on the initial amount.

[tex]\frac{p\times n}{100}[/tex]
[tex]\frac{25\times 55}{100} =25\times55=1375\div100=13.75[/tex]
[tex]=13.75[/tex]

Now add:
[tex]55+13.75=68.75[/tex]
[tex]=68.75[/tex]

After a 25% increase on an item that costs 55 dollars, the new sale price will cost "$68.75 cents."

Hope this helps.

Interest = 500

Step-by-step explanation:

Interest = [tex] \frac{p∗r∗t}{100} \\ [/tex]

p = principal amount , r = rate , t = time

Interest=[tex] \frac{10000 \times 5 \times 1}{100} \\ [/tex]

Interest = 500

Answer:

interest = RS. 500

Step-by-step explanation:

interest= 100/p*r*t

p∗r∗t

​p = principal amount , r = rate , t = time

interest= 100/10000∗5∗1

​

Answer:

67.5 UNITS 2

Step-by-step explanation:

1/2 x 3 x 5 = 7.5

35 + 25 + 7.5 = 67.5 units 2

The area of a 2D form is the amount of space within its perimeter.The area of the compound figure is 67.5 units².

The area of a 2D form is the amount of space within its perimeter. It is measured in square units, such as cm², m², etc. To find the area of a square formula or any other quadrilateral, multiply its length by its width.

The area of the compound figure will be the sum of the different shapes and can be named as shown below.

The area of the compound figure = Area of triangle A + Area of triangle B + Area of rectangle C + Area of triangle D

[tex]\text{The area of the compound figure} = (0.5 \times 7 \times10) + (0.5 \times 5 \times5) + ( 5\times 3 ) +(0.5\times5\times2)\\\\\text{The area of the compound figure} = 35 + 12.5 + 15 + 5\\\\\text{The area of the compound figure} = 67.5\rm\ units^2[/tex]

Hence, the area of the compound figure is 67.5 units².

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Answer:

Step-by-step explanation:

In a parallelogram, the diagonals bisect each other.

So, AD = BA

15x - 22 = 4x

Add 22 to both sides

15x  = 4x + 22

Now, subtract 4x from both sides

15x - 4x = 22

       11x = 22

Divide both sides by 11

x = 22/11

x = 2

Answer:

A 61377

B 87405

Step-by-step explanation:

If sum of the digits of a number is divisible by 3, then that number is also divisible by 3.

Option A:

Given number is: 61377

Sum of the digits = 6+1+3+7+7 = 24

24 is divisible by 3, hence 61377 is also divisible by 3.

Option B:

Given number is: 87405

Sum of the digits = 8+7+4+0+5 = 24

24 is divisible by 3, hence 87405 is also divisible by 3.

Option C:

Given number is: 30898

Sum of the digits = 3+0+8+9+8 = 28

28 is not divisible by 3, hence 30898 is also not divisible by 3.

Similarly, sum of the digits of the numbers in options D, E and F are 8, 22 and 26 respectively, which are not divisible by 3, hence the numbers 6020, 29830 and 75932 are also not divisible by 3.

Answer:

7n + 8 = 12

Step-by-step explanation:

I believe you're looking for an algebraic equation, but let me know if you need it to be solved! :)

Answer:

92

Step-by-step explanation:

Number equal to 12 is 12 ~ 8 added to the number (addition)

7 * 12 = 84

84 + 8 = 92

To find a linear question, we must have two points on the line and we must know the slope.

Let us choose two points at random:

    (-6,12)    and    (-5,14)

Now let us find the slope of the linear line:

 [tex]m = \frac{y2-y1}{x2-x1} =\frac{14-12}{-5--6} = 2[/tex]

   So the slope is 2.

Now let us set up the equation which now requires only one point and the slope

      let us use the point (-6,12) and the slope of 2

      [tex]y-12 = 2(x+6)\\y = 2x +12 +12\\y= 2x +4[/tex]

So the linear line is y = 2x + 4.

Hope that helps!

Answer:

The slope is 2/3

Step-by-step explanation:

Take the line from the point it is touching then go up 2 and right 3 which is 2/3 and if the patter repeats then that's how you know its right.

Answer:

21 years

Step-by-step explanation:

Answer:

357

Step-by-step explanation:

Multiply: 340*1.05=357

Answer:

n=4

Step-by-step explanation:

Answer:

[tex]A(t)=-1.8t-4.5[/tex]

Step-by-step explanation:

Mr.Mole's digging can be described by a linear model of general equation:

[tex]A(t)=m*t+c[/tex]

Where "m" is the rate at which he descends. Note that since the function A(t) measure his altitude relative to the ground, the rate "m" must be negative.

[tex](m=-1.8)[/tex]

[tex]A(t)=-1.8*t+c[/tex]

The constant "c" is his starting position. To find this value, assign the given data at t = 5 min to the equation above

[tex]-13.5=-1.8*5+c\\c=-4.5m[/tex]

Therefore, the function A(t) is described by the following formula:
[tex]A(t)=-1.8t-4.5[/tex]

Answer:

22.04

Step-by-step explanation:

Answer:

Dozen; A set of 12

4 dozen:- 4 x 12 = 48 glasses in total

5/12 of the 48 glasses are wasted

5/12 x 48 = 20 glasses are broken

============================================================

Work Shown:

1 dozen glasses = 12 glasses

4 dozen glasses = 48 glasses

48*(5/12) = 20 glasses are broken

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

Alternative route:

5 glasses out of 12 are broken

This is the same as saying 5 glasses out of 1 dozen are broken.

Multiply both values by 4 to get 4*5 = 20 glasses broken out of 4*1 = 4 dozen.

Answer:

see below

Step-by-step explanation:

Line 2 (the line that is darker in your pic) is wrong because the sign for 8 goes from "+" to "-". It should be +4x-8 in order for it to be correct

Answer:I think over 3.

Step-by-step explanation:

open bracket pi over 3 comma 2 times pi over 3 comma 4 times pi over 3 comma 5 times pi over 3 close bracket

open bracket pi over 3 comma 5 times pi over 3 close bracket.

The solution of the trigonometric function will be π/3, 2π/3, 4π/3, and 5π/3. Then the correct option is C.

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The trigonometric equation is given below.

1/cos θ = 4 cos θ

The interval of the cos θ is [0, 2π).

Simplify the trigonometric equation, then the equation will be

cos² θ = 1/4

Taking square root on both side, then the equation will be

cos θ = ±1/2

Taking cosine inverse, then the equation will be

θ = cos ⁻¹(1/2)

θ = π/3, 2π/3, 4π/3, 5π/3

The solution of the trigonometric function will be π/3, 2π/3, 4π/3, and 5π/3.

Then the correct option is C.

More about the trigonometry link is given below.

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Answer:

Consistent dependent

3x - 3y = 6  and  -x + y = -2

Step-by-step explanation:

Inconsistent: parallel lines, no solutions

Consistent dependent: same line, infinite solutions

Consistent independent: intersects at one point, one solution

Therefore, the pair of lines are Consistent dependent

From inspection of the diagram:

The lines will have equivalent equations.

Therefore, the solution is 3x - 3y = 6  and  -x + y = -2

Because:

3x - 3y = 6  ⇒  y = x - 2

-x + y = -2 ⇒  y = x - 2

Answer:

-10

Step-by-step explanation:

The required value of x is -1 when f(x) = –3 for the given function. The correct answer is option (D) -1.

The function is defined as a mathematical expression that defines a relationship between one variable and another variable.

The given table represents the function f(x).

x      f(x)

-4   -66

-3   -29

-2    -10

-1      -3

0     -1

1     6

We are given a table representing the function f(x) and we need to find the value of x when f(x) = –3.

From the given table, we can see that when x = –1, f(x) = –3. Therefore, the answer is -1.

Hence, the correct option is:

(D) -1

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Answer:

3 3/10

Step-by-step explanation:

proof is in the picture :)

The radius of circle is 3/17 1/2 inhces whose diameter is 635 inch.

We have,

The diameter of circle is 635 inches.

Also, we know that the radius of circle is half of the diameter.

So, r= d/2

Then, the radius of circle is

= 635/ 2

= 317 1/2

Thus, the required radius is 317 1/2 inches.

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Answer:

the distance between city C and D is 7.6 inches

given:

solving similarities:

[tex]\hookrightarrow \sf \dfrac{5616 }{8.5 } = \dfrac{5041 }{x}[/tex]

change sides

[tex]\hookrightarrow \sf 5616x = 5041(8.5)[/tex]

simplify

[tex]\hookrightarrow \sf 5616x = 42848.5[/tex]

change sides

[tex]\hookrightarrow \sf x = \dfrac{42848.5}{5616}[/tex]

simplify

[tex]\hookrightarrow \sf x = 7.62972[/tex]

rounded to nearest one decimal place

[tex]\hookrightarrow \sf x = 7.6[/tex]

Let that be x

[tex]\\ \rm\bull\rightarrowtail \dfrac{8.5}{5616}=\dfrac{x}{5041}[/tex]

[tex]\\ \rm\bull\rightarrowtail 0.0015=\dfrac{x}{5041}[/tex]

[tex]\\ \rm\bull\rightarrowtail x=0.0015(5041)[/tex]

[tex]\\ \rm\bull\rightarrowtail x=7.6in[/tex]

Answer:

1) geometric sequence

2) geometric sequence

3) arithmetic sequence

Step-by-step explanation:

First two sequences are geometric sequences

The geometric sequences are  sequences where each term is made by multiplying the preceding term by the same value

In here the first sequence is multiplied by 4

the second one is multiplied by -3

The third one however is set by adding 5 to the number each time

So the third one is an arithmetic sequence