Please please help!!!

Answer:

x=3

Step-by-step explanation:

2x+2=8

2x=6

x=3

Answer:

x=3, y=2

Step-by-step explanation:

y=2

substitute 2 for y

2x+2=8

x=3

Answer:

The airplane is 100.4 flying at an altitude of 30,000 feet. AB = 210,000 feet. At what angle is the plane descending (the angle of depression)?. Above is a picture of astronauts ...

7 pages·477 KB

The straight line distance between the submarine and the airplane is 4000 feet.

Trigonometric ratio is used to show the relationship between the sides and angles of a right angled triangle.

Let d represent the straight line distance between the submarine and the airplane. Hence:

sin(30) = 2000/d

d = 4000 feet

The straight line distance between the submarine and the airplane is 4000 feet.

Find out more on trigonometric ratio at: https://brainly.com/question/24349828

Answer:

Explanation:

64 = 32×2

32 = 16×2

16 = 8×2

8 = 4×2

(so 128 is the next number)

Answer:

c by multiplying 64 by 2

Step-by-step explanation:

in the sequence we can see that 4×2=8 8×2=16 16×2=32 32×2=64 64×2=128

Answer:

Plzzz guys help me ;( F(x)-mx+ b, f(-2)=3 and f(4)=1 , what is the value of m and

Answer:

50,645.82

Step-by-step explanation:

[tex]30000 \sqrt{2.85} [/tex] =50,645.82

Answer: change 9x and 5x

Step-by-step explanation:

Answer:

the volume of the hemisphere is 1970.2 cubic inches.

Step-by-step explanation:

The given is,

                  Radius of hemisphere is 9.8 inches.

Step:1

                 Formula of volume of hemisphere is,

                             ..................(1)

                 Where,

                           r - Radius of hemisphere

Step:2

                 From the given,

                          r = 9.8 inches

                 Equation (1) becomes,

                                                 =  

                                                 =                    

                                                 = (0.66666666)(3.1415)(942.192)  

                                                 = 1971.23

          Volume of hemisphere = 1971.23 cubic inches

Result:is 1970.2 cubic inches.

Answer:

1971.2

Step-by-step explanation:

I just did it and got it right, it's not 1970.2, trust me

Answer:

Answer is in the link below- jkjk

Step-by-step explanation:

It's a right angle so it can only add to 90 degrees, not 180

Answer:

D

Step-by-step explanation:

The equation for the sequence turns out to be 2([tex]3^{n-1}[/tex]) where n is the nth.

Plugging in 19 you get 2([tex]3^{18}[/tex]), or  774,840,978

Answer:

No

Step-by-step explanation:

It is not equel

Answer:

a. True

b. True

c. False

d. False

e. False

f. True

g. True

h. True

i. True

j. True

Step-by-step explanation:

When the integer divides the two number then their sum is also divisible by that integer. This is also the case in the subtraction when two number are divisible then their difference is also divisible. When there is division by 5 the number not necessarily can be 5 or -5. This statement is not correct.

80m, you kind of distribute so 8 times 10m is 80m

Answer:

63

Step-by-step explanation:

×+15+102=180

×=180-102-15

×=64

Answer

It would be C

Step-by-step explanation:

Answer:

The square root of Pi is approximately 1.77245.

Step-by-step explanation:

Answer:

Answer:

First, if we have a set of K elements, such that are ordered as:

{x₁, x₂, ...}

The total number of permutations for the K elements can be found in the next way.

For the first element in the set, we have K options.

For the second element in the set, we have (K - 1) options (because we already choose one)

For the third element we have (K - 2) options, and so on.

The total number of permutation is equal to the product between the numbers of options for each position's element, then the number of permutations for K elements is:

permutations = K*(K - 1)*(K - 2)*....*2*1 = K!

Now suppose that we have a set of N elements, and we want to make groups of K elements.

The total number of different combinations of K elements is given by the equation:

[tex]C(N, K) = \frac{N!}{(N - K)!*K!}[/tex]

In this case we have 15 objects (then  N = 15) and we take 7 at the time (Then K = 7)

Where we need to take in account the number of combinations and also the permutations for each combination.

Then the total number of different sets is:

C(15*7)*7!

First, the total number of combinations will be:

[tex]C(15,7) = \frac{15!}{(15 - 7)!7!} = \frac{15!}{8!*7!} = \frac{15*14*13*12*11*10*9}{7*6*5*4*3*2*1} = 6,435[/tex]

So we have 6,436 combinations, and each one of these combinations has 7! permutations.

permutations = 7! = 7*6*5*4*3*2*1 = 5,040

if we combine these we get:

Combinations*Permutations = 6,435*5,040 = 32,432,400

Answer:

7

Step-by-step explanation:

Answer:

A, C, D.

Step-by-step explanation:

Answer:

umm none the above cuz 5^-2 = 1/25 and 5^-4 = 625, 625*25 = 15625 so 1/15625 bru

Step-by-step explanation:

Answer:

3/10

Step-by-step explanation:

Answer:

$1.12

Step-by-step explanation:

7% of 16 is 1.12

Answer:

9 times 2 because of the 2 sides meaning... the answer is... 18 but also had to round it up to 20 because it's higher than 5 its 2 left but if necessary i think you need to add 9 more on the other side with the 9 across and do the same with the 2 mi!

Step-by-step explanation:

Hope i helped! Your welcome! Have a great week!

Answer:

Karen,  this type of question is such a tricky question, there is a lot of things that you just have to remember for these.  Also, this type of question is asked a lot on brainly,  you are in good company :P   This also makes me wonder if math teachers are just REALLY BAD at teaching this.. hmmm   Something is up with this type of problem b/c I have answer 100s of these type on here.. they are tricky.  soooo...

Step-by-step explanation:

1st ,

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

with the above info,  we can solve your triangle  :P  not meant to sound "wrong"  .. anyway

look for the info you are given and what you want to find... and match that to one of the 3 formulas.  after  you've done this a few 100 times.. you'll just remember the above formulas.  :D

sooo I see that we want to find that angle ∅ and we know two of the sides and that this is a right triangle.. which means we can use the above formulas on this triangle.  So we know the adjacent side and the opposite side, to the angle,  soo lets use TOA

Tan(∅) = Opp / Adj

Tan(∅) = 4 / 13

now the algebra gets a little tricky here.. but it's just using the inverse function of the Tan to find the angle .. it's just going  backwards with the function is all.. nothing to see here... move along.. :D

take the inverse Tan function ( arcTan)  on both sides... sooo

∅ = arcTan( 4 /13 )      ( this will find the angle, but make sure your calculator is set to degrees.. and not radians )

∅ = 17.1027...°

So, now we know that angle ∅

SOH CAH TOA is super helpful for this kind of triangle problem :)

Answer:

-21/2 <-5/2 < - 2 < - 1.75 <-1 <1.75 <9/4

Answer:

You add up all the things it tells you... do a little more work... solve... adding up.... doing equation... The things in parenthesis you have to add up with whatever solves for X so Your answer will be... -15

The answer is... 15?!

P.s, B helps with the equation!

My first answer is 15 if i change my mind or come back and change it to solve which i will it may be different!

Tell me if i'm right!

Step-by-step explanation:

Your welcome!

Have a great week!

Byes!

-Sincerely, The Brainliest <3 :)

Answer:

-200 represents the price it orignally cost??

Step-by-step explanation:

Answer: 4.5

Step-by-step explanation:

You add all the number and divide them by the amout

of numbers there are for example here you add them all and get 45 and since there are 10 you divide 45 by 10 and get 4.5

Answer:

6

Step-by-step explanation:

Answer:

x > -4

Step-by-step explanation:

I just looked it up

But I know this is it

Answer:

Inequality Form:

x  >  − 4

Interval Notation:

(-4,∞)

Step-by-step explanation: