FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) thank you very much!!! (22pts)

Answer:

4√2/7

Step-by-step explanation:

Suppose cos(x)=-1/3, where pi/2≤x≤ pi

tan(2x) = sin(2x)/cos(2x)

Since sin2x = 2sinx cosx

cos 2x = 2cos²x-1

Substitute

tan(2x) = 2sinx cosx/ 2cos²x-1

Given cosx = -1/3

adjacent = -1

hyp = 3

opp = √3²-(-1)²

opp = √9-1

opp = √8

sinx = opp/hyp

sinx = √8/3

tan(2x) = 2sinx cosx/ 2cos²x-1

tan(2x) = 2(√8/3)(-1/3)/ 2(-1/3)²-1

tan2x= (-2√8/9 )÷ (2/9 - 1)

tan2x = -4√2/9 * 9/-7

tan 2x = 4√2/7

Answer:23 - 3 = 20 + 3 = 23

Step-by-step explanation:

Answer:

2.44 pints of white

Step-by-step explanation:

Answer:30

Step-by-step explanation:

30 times he can expect to spin a number less than 5.

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.

The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

The degree to which something is likely to happen is basically what probability means.

Given:

A spinner with six section numbered from 1 to 6.

total number of times spins = 150

So, the number of times the number comes less than 5 is

= 150 x 1/5

= 150/5

= 30

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Answer:

isme me kyaaa help kree question to puchho dhang se....yrr

Answer:

D. not necessarily congruent

I got it right

Answer:

14

.......⋋✿ ⁰ o ⁰ ✿⋌

Answer:

n = 14

Step-by-step explanation:

ΔABC was dilated by a scale factor of 2.

Answer:

Step-by-step explanation:

a)

30=20+0.2m

10=0.2m

50=m

So after sending 20 messages the plans would cost the same.

b)

Obviously from the first part that the unlimited plan is cheaper when sending 200 messages, but the costs numerically would be.

Unlimited plan costs $30 while the other plan costs

20+0.2(200)=$60

Answer:

2 sides re equal

and 2 base angles are equal

Mark it as the brainliest answer

please thanks

Answer:

Hello! :) have a good day!

It would be D. 405

Answer:

h= -10

Step-by-step explanation:

Basically you’re finding out what h is equal to because h can’t be a real number i guess i would say. It is but it also isn’t if that makes sense. Basically just subtract 8 on both sides ands you get your answer. Hope this helped :)

Answer:

(2x+6)/10 = (x+6)/8

10(x+6) = 8(2x+6)

10x + 60 = 16x  + 48

6x = 12

x = 2

so

AE = 2(2) +6

AE = 4 + 6

AE = 10

Answer:

y = 40x + 20

Step-by-step explanation:

Answer:

y = 40x + 20

Step-by-step explanation:

Slope Intercept Form :-

> y = mx + c

Here y Intercept is 20 as it passes through (0,20) . And the slope will be ,

> m = 40 .

Therefore Equation :-

> y = 40x + 20

Step-by-step explanation:

if a rectangle has 4 sides and there are two lengths and two widths

then we could split 80 by 2 and minus 4 from the length and then split that into two.

then your answer would be  and 36 and 44

and the total answer would be half of each so the L=22 and L=22

and the W=18 and W= 18

sorry if this is wrong it least i tried :9

Answer:

2:3 (2 bikes for every 3 people)

Step-by-step explanation:

hope this helps

Answer:

1. x(x+8)

2. x(x−4)

3. (x−1)(x+2)

4.(x+3)(x−3)

5. (x+11)(x+11)

6. (x−4)(x−4)

Step-by-step explanation:

Answer:

cos 30=b/h=√3/2.......(1)

sin30=p/b=1/2.......(2)

we need b=?

h=2b/√3. h=2√2

now.....2b/√3=2√2

b=mBC=√6

Answer:

Sorry to say this... but neither of them have a solution of (2,1)

Step-by-step explanation:

The top one has a solution of (-2,-1). The one on the bottom has a solution of (-2,1). So... I'm not sure how this can help... but yeah...

Answer:

Step-by-step explanation:

Since 40% of the crew are men, which means n. 40=8 n=8/. 40 n=20 total number of crew 20 - 8=12 are women

Answer:

It would be A

Step-by-step explanation:

If you are minusing by 5 in the equation then that means that they graph has gone down by 5 units not up. and since 4x and is positive and -2x is negative the graph would flip over the years axis

Answer:

It's 10

Step-by-step explanation:

It's 10 because 7x is congruent to 70 and 7 times 10 equals 70 :))

Answer:

It's 10

Step-by-step explanation:

It's 10 buddy lol

Answer:

Step-by-step explanation:

height/A = tanA

height/40 = 3/4

height = 30 meters

Answer:

13

Step-by-step explanation:

Answer: x=8 angle BDC=77

Step-by-step explanation:

9x-12x=-19-5

-3x=-24

x=8

12x(8)-19

=77

(9x + 5) and (12x - 19) are one angle split equally.

(9x + 5) = (12x - 19)

The value of m∠BDC is 65°

It is a two-dimensional figure which has three sides and the sum of the three angles are equal to 180 degrees.

We have,

(9x + 5) and (12x - 19) are one angle split equally.

So,

9x + 5 = 12x - 19

We will solve for x.

9x + 5 = 12x - 19

Add 19 on both sides.

9x + 5 + 19 = 12x

Subtract 9x on both sides.

24 = 12x - 9x

24 = 3x

Divide both sides by 3.

24/3 = x

x = 7

Now,

The value of m∠BDC.

= 12x - 19

= 12 x 7 - 19

= 84 - 19

= 65°

Thus,

The value of m∠BDC is 65°

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Answer:

Need more info to answer your question!

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Step 1: Find your legth and width

Length = x + 5

Width = 3

Step 2: Use area formula to find area

l x w = A

(x + 5) x 3 = A

A = 3(x+5)

Step 3: Therefore Statement

Thereforethe answer to the question is C. 3(x+5)

Answer:

C. 3(x + 5)

Step-by-step explanation:

area of rectangle = length * width = width * length

A = area of largest rectangle

a1 = area of left rectangle

a2 = area of right triangle

The largest rectangle is made up of the the two smaller rectangles.

A = a1 + a2

Left rectangle: a1 = WL = 3x

Right rectangle: a2 = WL = 3 * 5

Total area of the two small rectangles:

A = a1 + a2 = 3x + 3 * 5

Apply the distributive property in reverse to 3x + 3 * 5 by factoring out a 3:

A = 3x + 3 * 5 = 3(x + 5)

The area of the largest rectangle is 3(x + 5)

We can also find an expression for the area of the largest rectangle directly by looking at its length and width.

The length of the largest rectangle is x + 5.

The width of the largest rectangle is 3.

A = WL

Substitute 3 for W, the width.

Substitute x + 5 for L, the length.

A = 3(x + 5)

Answer: C. 3(x + 5)

Answer:

x=10

Step-by-step explanation:

see picture for explanation