Can someone help me?

Answer:

ok

Step-by-step explanation:

(tan²(θ) cos²(θ) - 1) / (1 + cos(2θ))

Recall that

tan(θ) = sin(θ) / cos(θ)

so cos²(θ) cancels with the cos²(θ) in the tan²(θ) term:

(sin²(θ) - 1) / (1 + cos(2θ))

Recall the double angle identity for cosine,

cos(2θ) = 2 cos²(θ) - 1

so the 1 in the denominator also vanishes:

(sin²(θ) - 1) / (2 cos²(θ))

Recall the Pythagorean identity,

cos²(θ) + sin²(θ) = 1

which means

sin²(θ) - 1 = -cos²(θ):

-cos²(θ) / (2 cos²(θ))

Cancel the cos²(θ) terms to end up with

(tan²(θ) cos²(θ) - 1) / (1 + cos(2θ)) = -1/2

Answer:

P= 2 (a+b)

Step-by-step explanation:

Answer:

9413

Step-by-step explanation:

Given that :

Error = $2 ; Standard deviation (σ) =99 ; α = 95% = 0.95

Zα/2 = Z0. 05/2 = 1.96 (Z probability calculator)...

n = sample size

Recall:

n = ((Zα/2 * σ) / Error)^2

Using the formular above, the sample size n can be obtained ;

n = ((1.96 * 99) / 2)^2

n = 97.02^2

n = 9412.8804

n = 9413

Answer:

Below -2: -2.5, -4.5

Between -2 and 1: -0.5, 0.5,

Above 1: 1.5, 4

Step-by-step explanation:

-2.5 and -4.5 are lesser than -2.

-0.5 and 0.5 are less than 1 but more than -2.

1.5 and 4 are more than 1.

Answer:

Below -2

-4.5, -2.5

Between -2 and 1

-0.5, 0.5

Above 1

1.5, 4

Step-by-step explanation:

Vertical Number line is similar to the horizontal one (Use the graph for more info)

1.5, 4, -0.5, -2.5, 0.5, -4.5

Below -2

-4.5, -2.5

Between -2 and 1

-0.5, 0.5

Above 1

1.5, 4

Answer:

i think its j

Step-by-step explanation:

Answer:

D

Add all of the sides together. 2x+1 plus 2x+1 equalls 4x +2

Then add that to (xsquared+3x-2 + xsquared+3x-2) which is 2xsquared +6x-4+4x+2 which equalls D

Its D

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I believe your answer is 2954.9

Answer:

2800

Step-by-step explanation:

Interest earned = 2000 × [tex]\frac{5}{100}[/tex] × 8

                          = 800

Total earned = 2000 + 800

                      = 2800

Answer:

Step-by-step explanation:

Givens

C is the midpoint of AE

D is the midpoint of BE

DC is given as 46

Remark

Triangle CED is similar to AEB by SAS for similarity

Therefore DC is 1/2 the size of AB

Solution

1/2 AB = DC

1/2 AB = 46          Multiply both sides by 2

AB = 2*46

AB = 92

Answer:

a. Probability = 0.15

b. Probability = 0.3

Step-by-step explanation:

Given

[tex]P(Bedroom) = 0.4[/tex]

[tex]P(Kitchen) = 0.1[/tex]

[tex]P(Bathroom) = 0.2[/tex]

[tex]P(Living\ room) = 0.15[/tex]

Solving (a): Probability of being somewhere else

This is calculated by subtracting the sum of given probabilities from 1.

[tex]Probability = 1 - (0.4 + 0.1 + 0.2 + 0.15)[/tex]

[tex]Probability = 1 - 0.85[/tex]

[tex]Probability = 0.15[/tex]

Solving (b): Probability of being in bedroom or kitchen

This is calculated as:

[tex]Probability = P(Bedroom) + P(Kitchen)[/tex]

[tex]Probability = 0.2 + 0.1[/tex]

[tex]Probability = 0.3[/tex]

Answer:

3x

Step-by-step explanation:

we don't know the value of x and we know we have 3 x's so we just add them together. But if we didn't know what ask for as we would just times that by 3

Complete question :

Of 50 employees of a store located in downtown Boston, 18 people take the subway to work, 12 take the bus, and 7 people take both the subway and the bus. How many employees (a) Take the subway or the bus to work? employees (b) Take only the bus to work? employees (c) Take either the bus or the subway to work (but not both)? employees (d) Get to work by some other means? employees

Answer:

23 ; 5 ; 16 ; 13

Step-by-step explanation:

Given that:

Subway (s) = 18

Bus (b) = 12

Subway and bus = 7

a) Take the subway or the bus to work?

Number of subway + number of bus - (subway and bus)

18 + 12 - 7 = 23

(b) Take only the bus to work?

Number of bus - (subway and bus)

12 - 7 = 5 employees

(c) Take either the bus or the subway to work (but not both)?

Number of bus - (subway and bus) + Number of bus - (subway and bus)

(12 - 7) + (18 - 7) = 5 + 11 = 16 employees

(d) Get to work by some other means?

Total employees - (subway + bus + subway and bus)

50 - (18 + 12 + 7)

50 - 37

= 13 employees

Answer:

B

Step-by-step explanation:

Answer:

B) 8

Step-by-step explanation:

If you multiply 8 times 3, that will give you 24. But you'll have to subtract 6 afterwards. 24 - 6 is 18.

Order used:

P:arenthesis

E:xponents

M:ultipication

D:ivision

A:ddition

S:ubtraction

Multiplication comes before subtraction.

Answer:

a2+16

Step-by-step explanation:

Answer:4(3x +2)

Step-by-step explanation:

The expressions represent the cost, in dollars, for 4 people to go horseback riding for 3 hours each is  4(3x + 2).

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, The total cost to go horseback riding is a dollar per hour plus a $2 fee for renting a helmet.

Let, The number of hours is represented by 'x'.

Therefore, The cost of riding with a helmet is,

= x + 2.

The cost of riding for 3 hours is 3x + 2 and the cost for 4 people is doing the same is, 4(3x + 2).

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ5

The sugar sweet company will choose from two companies to transport it's sugar to market the first company charges $4894 to rent trucks plus an additional fee of $175.75 for each ton of sugar the second company charges $5500 to rent trucks plus an additional fee of $125.25 for each ton of sugar

Answer: 12

Answer:

1. 50℅

2. 25℅

3. 60℅

hope it helps.

Answer:

Below.

Step-by-step explanation:

1. Divide 15 by 30 which is  1/2.

Then multiply 1/2 by 100 = 50%.

2.  3/12 = 1/4

1/4 * 100 = 25%

3.  6/10 = 0.6

0.6 * 100 = 60%.

right 3 units down 5 units

[tex]f(x)=x^2[/tex]

right 3 units = (3,0)

down 5 units = (0,-5)

vertex = (h,k) therefore.

[tex]g(x)=(x-3)^2-5[/tex]

Then convert the vertex form into standard form for the equation in the choice.

[tex]g(x)=(x-3)^2-5\\g(x)=(x^2-6x+9)-5+9\\g(x)=(x^2-6x)+4\\g(x)=x^2-6x+4[/tex]

Thus, the answer is B.

Answer:

A. 8 3/4

Step-by-step explanation:

2 1/2 x 3 1/2 =

5/2 x 7/2 =

35/4 =

8 3/4

Answer:

h=416$

Step-by-step explanation:

36.50h+27.50h= 64

64x6 1/2=

416 $

Answer:

416

Step-by-step explanation:

36.50+27.50=64

64*6=384

and then add 32 for the half an hour

384+32=416

(1/3) + (1/2)

=> [(1×2)/(3×2)] + [(1×3)/(2×3)]

=> (2/6) + (3/6)

=> (5/6)

Answer:

11 ALSO SOMEONE PLS ANSWER MY QUESTION

Step-by-step explanation:

24+24=48

70-48=22

22/2=11

Answer:

Step-by-step explanation:

15 vowels plus 25 consonants is 40

so 15/40 then you take the one vowel out and there is 39 so then it is 14 over 39.

Answer:

12 (who has 12 friends?)

Step-by-step explanation:

make the fractions, I think its called a denominator,  the same.

6/7 tums into 12/14

so if you give each friend 1/14 then you could feed 12 friends

this answer only works if you're not eating as well

Answer: I think the answer would be (2, -1)

Answer:

Where's the drawing at because I don't see anything man

Answer:

Please check the explanation.

Step-by-step explanation:

Let us consider

[tex]y = f(x)[/tex]

To find the area under the curve [tex]y = f(x)[/tex] between [tex]x = a[/tex] and [tex]x = b[/tex], all we need is to integrate [tex]y = f(x)[/tex] between the limits of [tex]a[/tex] and [tex]b[/tex].

For example, the area between the curve y = x² - 4 and the x-axis on an interval [2, -2] can be calculated as:

[tex]A=\int _a^b|f\left(x\right)|dx[/tex]

    = [tex]\int _{-2}^2\left|x^2-4\right|dx[/tex]

[tex]\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx[/tex]

   [tex]=\int _{-2}^2x^2dx-\int _{-2}^24dx[/tex]

solving

[tex]\int _{-2}^2x^2dx[/tex]

[tex]\mathrm{Apply\:the\:Power\:Rule}:\quad \int x^adx=\frac{x^{a+1}}{a+1},\:\quad \:a\ne -1[/tex]

   [tex]=\left[\frac{x^{2+1}}{2+1}\right]^2_{-2}[/tex]

    [tex]=\left[\frac{x^3}{3}\right]^2_{-2}[/tex]

computing the boundaries

     [tex]=\frac{16}{3}[/tex]

Thus,

[tex]\int _{-2}^2x^2dx=\frac{16}{3}[/tex]

similarly solving

[tex]\int _{-2}^24dx[/tex]

[tex]\mathrm{Integral\:of\:a\:constant}:\quad \int adx=ax[/tex]

     [tex]=\left[4x\right]^2_{-2}[/tex]

computing the boundaries

      [tex]=16[/tex]

Thus,

[tex]\int _{-2}^24dx=16[/tex]

Therefore, the expression becomes

[tex]A=\int _a^b|f\left(x\right)|dx=\int _{-2}^2x^2dx-\int _{-2}^24dx[/tex]

  [tex]=\frac{16}{3}-16[/tex]

  [tex]=-\frac{32}{3}[/tex]

  [tex]=-10.67[/tex] square units

Thus, the area under a curve is -10.67 square units

The area is negative because it is below the x-axis. Please check the attached figure.

Answer:

The measures of the angles are 16° and 164°.

Step-by-step explanation:

Let the smaller angle be x and the larger angle be 8x+36.

Supplementary angles add up to 180°.

Small angle + Large angle = 180°

x + 8x + 36 = 180

9x + 36 = 180

9x = 180 - 36

    = 144

x = 144 ÷ 9

x = 16

8x+36 = 8(16)+36

           = 164