Which expression is equivalent to 2cos2(StartFraction x Over 2 EndFraction) minus cosine (x)?
0
1
1 – 2cos(x)
1 + 2cos(x)

Answer:

x = 10

Step-by-step explanation:

well all three angles would equal 180 in a triangle

6x - 6 + 7x + 1 + 55 = 180

combine terms

13x + 50 = 180

13x = 130

x = 10

Answer:

54% I think and if im wrong im so sorry.

Step-by-step explanation:

Answer:

18

Step-by-step explanation:

Step 1)

54 ÷ 3 = 18

Answer:

54/3

Step-by-step explanation:

Answer:

The equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4) is x=-5

Option A is correct.

Step-by-step explanation:

We need to find equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4)

We need a line parallel to x=-2 or x+2=0 it should be of form x+k=0

We need to find k, by putting value of x=-5 as given in question the point(-5,4)

-5+k=0

k=5

So, the equation of line will be found by putting k=5:

x+k=0

x+5=0

x=-5

So, the equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4) is x=-5

Option A is correct.

Answer:

12.4 cm

Step-by-step explanation:

Length of an arc AB = [tex] \frac{\theta}{360} \times 2 \pi r [/tex]

Where,

[tex] \theta = 90 [/tex]

[tex] \pi = 90 [/tex]

r = 7.9 cm

Plug in the values

Length of an arc AB = [tex] \frac{90}{360} \times 2 \times 3.14 \times 7.9 [/tex]

[tex] = \frac{90 \times 2 \times 3.14 \times 7.9}{360} [/tex]

Length of an arc AB = 12.4 cm (nearest tenth)

Answer:

Step-by-step explanation:

answer is 12.4cm !

Answer:

B

Step-by-step explanation:

Answer:

4 Hours

Step-by-step explanation:

Answer:

cos[tex](x-\frac{\pi}{2})[/tex]

Step-by-step explanation:

If you insists that sine and cosine should be of the same angle use Pythagorean identity. Otherwise you can use identity sin(x) = cos[tex](x-\frac{\pi}{2})[/tex]

Hope this helps! :)

Answer:

-4 or -9

Step-by-step explanation:

-a^2-13a-36=0

(-a-4)(a+9)=0

-a-4=0

a+9=0

a= -4, -9

Answer:

-4(a - 4)

Step-by-step explanation:

Two very good apps that I use for Algebra is (ill put it in the comments)

hope this helps!!!

it won't let me put the link. im sorry.

Answer:

12

Step-by-step explanation:

12

Answer:

the answer should 60°

Step-by-step explanation:

if look at angle pq and rq the measure of the angle is 60° if u were to spin that angle to a u should get the same measurement

Answer:

x = 1/2

Step-by-step explanation:

[tex] \frac{4}{7} x = \frac{2}{7} \\ \\ x = \frac{ \cancel2}{ \cancel7} \times \frac{ \cancel7}{ \cancel4 \: \: 2} \\ \\ x = \frac{1}{2} [/tex]

Answer:

72 lb bags

Step-by-step explanation:

18 / 0.25 = 72 bags :D

Answer:

Step-by-step explanation:

Table 3.

Given :

Skies travel charges two-fifty for a plane ticket and $28 per day for rental car.

For the same trip, r&r travels charges 305 for a plane ticket and 23 per day for car rental.

To Find :

The minimum number of days in martin's vacation should be or r&r travel to be a better deal for him.

Solution :

Let, minimum number of days are x.

So, cost charged by Skies travel is, [tex]c_1 = 25+28x[/tex]

Cost charged by r&r travels is, [tex]c_2 = 305 + 23x[/tex]

r&r should be better deal when :

[tex]c_2 < c_1\\\\305 + 23x <25 + 28x\\\\5x >280\\\\x>56[/tex]

So, for better deal at r&r minimum number of vacation days is 57.

Hence, this is the required solution.

Answer:

Infinitely many

Step-by-step explanation:

Add 5 to both sides and subtract 3x on both sides. that results in 0=0. if the numbers are the same, than its infinitely many.

Answer:

0=0

Step-by-step explanation:

3x-5=-5+3x

0=0

Answer:

1. 4

2. 20

3. 80

Step-by-step explanation:

  Brainliest? I only need one more. Lol

Answer:

2/35

Step-by-step explanation:

original equation:q+1/7=1/5

subtract both sides by 1/7

q=1/5-1/7

q=2/35

(give me brainly pls)

Answer:

y = 13 +3x

i answered in the comments, bc it wasnt lettin me actually answer

Step-by-step explanation:

3x - y = - 13

-3x -3x

-y = -13 - 3x

divide everything by -1

y = 13 + 3x

hope this helpsss!!!

Answer:

(a−9b)(a2+b)

Step-by-step explanation:

Answer: B,C

Step-by-step explanation:

Elevator A: -4x+16

Elevator B: -3x +16

Answer:

Did u find the answer for this

Step-by-step explanation:

The triangle GJH is congruent to the triangle KLM. The correct option is A.

In geometry, two figures or objects are said to be congruent if their shapes and sizes match, or if one is the mirror image of the other. The meaning of congruency is that the two shapes are similar as well as equal in size.

Given that, on a coordinate plane, there are different triangles.

The triangle GJH is congruent to the triangle KLM because the sides of the triangle are exactly equal.

KL = HJ

KM = HG

ML = JH

Therefore, the triangle GJH is congruent to the triangle KLM. The correct option is A.

To know more about congruency follow

brainly.com/question/2938476

#SPJ5

Answer:

7.5 mph

Step-by-step explanation:

i hope this is what you needed , if so, please mark brainliest

Answer:

7.5 miles per hour

Step-by-step explanation:

An hour=60 mins

6×10=60

3/4×10=7.5

Answer:

I go for I and IV....................