8 x ÷ 4 = 100 What is the value of x in the equation?
5
A. 5
B. 25
C. 50

D. 200

Answer:

sin2x = [tex]\frac{4\sqrt{21} }{25}[/tex]

Step-by-step explanation:

Given sinx = [tex]\frac{2}{5}[/tex] = [tex]\frac{opposite}{hypotenuse}[/tex]

Then the third side, the adjacent is found using Pythagoras' identity, that is

adj² + opp² = hyp²

adj² + 2² = 5²

adj² + 4 = 25 ( subtract 4 from both sides )

adj² = 21 ( take the square root of both sides )

adj = [tex]\sqrt{21}[/tex] , then

cosx = [tex]\frac{adj}{hyp}[/tex] = [tex]\frac{\sqrt{21} }{5}[/tex]

Using the double angle identity

sin2x = 2sinxcosx

         = 2 × [tex]\frac{2}{5}[/tex] × [tex]\frac{\sqrt{21} }{5}[/tex]

         = [tex]\frac{4\sqrt{21} }{25}[/tex]

Answer:

145°

Step-by-step explanation:

upper left angle inside triangle is 180-137, or 43°

lower right angle inside triangle is 180-(43 + 102) or 35°

'?' measures 180 - 35 which is 145°

Answer:

If you are doing subtraction with fractions you need to make a common denominator and subtract the numerators from each other

ex. 1/2 - 1/3

make a common denominator (or find the least common multiple)

3/6 - 2/6

subtract the numerators

take 2 from 3 and put that on top.

Solution 1/2-1/3= 3/6-2/6= 1/6

Answer:

2.5

Step-by-step explanation:

it's the midpoint of XZ

Answer:

x = -5/9

Step-by-step explanation:

5/x = -9

multiply by x on both sides

5 = -9/x

multiply by 1/-9 on both sides

-1/9*5 = -1/9 *-9/x

-5/9 = x

The number of different groups of 6 that can be formed from the 13 volunteers is; 1716

This is a combination question that follows that formula;

nCr = n!/(r!(n - r)!)

We are told that the blood bank needs 6 people to help with a blood drive and that 13 have already volunteered.

Thus, number of different groups of 6 that can be formed from the 13 volunteers is;

¹³C₆ = 1716

Read more about Combinations at; https://brainly.com/question/16152577

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Answer: 48

Step-by-step explanation:

Each is 8x? So 8x1, 8x2 so on, then you get 48!

Answer:

The second one and the last one

Step-by-step explanation:

The third quadrant is of all negitive. The reason it is, is because it is on the left side of the x axis which makes it go lower like subtracting and dividing, then it is on the bottom half of the y axis which again is the same reason

i hope i helped and have a great day!

Answer:

B and D

Step-by-step explanation:

because in the 3rd quadrant both the x and y will be negative

1st quadrant all x and y are positive

2nd quadrant y are positive but x are negative

and in 4th quadrant x are positive and y are negative.

if brainiest is earned its greatly appreciated

Answer:

8.91

Step-by-step explanation: I hope this helps, I used my calculator to solve this for you, it is too complicated to explain.

Answer:

Step-by-step explanation:

((4x2.76)-1)÷2=5.02

Answer:

x = -7

-30 = 5(x + 1)

5(x + 1) = -30

5(x + 1)/5 = -30/5

x + 1 = -6

x + 1 - 1 = -6 -1

x = -7

its either a or d but positive its a

Answer:

100

Step-by-step explanation:

3+7=10

-90+180=90

10+90=100

Step-by-step explanation:

25m + 10b = 400

not enough info to solve for m or b. but that's the equation you would use.

Answer

100+340=440

Step-by-step explanation:

Answer:

(5,0)=x1,y1

(0,3)=x2,y2

so the range will be x1-x2/

Answer:

6

Step-by-step explanation:

-(-6)=6

D is the correct answer:)

Answer:If shoes are for all games in row,  P = 2 + 3 g   If not,  P = 5 g  ,with g the number of games

Explanation: The price depends:if shoes are included for the whole games, you just have to pay them once and then you have to pay  

g g a m e s , so  P ( g ) = 2 + 3 g   Else, you have to pay  g s h o e s  and  g b o w l p a r t y ,so  

P ( g ) = 2g + 3 g⇔ P ( g ) = 5 g

Answer:

she made a profit of 18$

50*1.2=60-42=18

Step-by-step explanation:

Answer:

The probability is A 6/36

Step-by-step explanation:

Two 6 sided dice = 12  

Answer:

5 feet

Step-by-step explanation:

Answer:

q122a

Step-by-step explanation:

The simple interest for a deposit of $ 5,000 at 3 % rate of interest for 1 year would be $ 150

What is Simple Interest?

Simple interest is a method of calculating interest that ignores the impact of compounding. While interest frequently compounds throughout the course of a loan's set periods, simple interest does not. Simple interest is calculated by multiplying the principal amount by the interest rate, times the number of periods.

Simple Interest = ( Principal Amount x Rate x Time Period ) / 100

Given data ,

Let the simple interest be represented as S

Now , the value of S is

The principal amount = $ 5,000

The rate of interest R = 3 %

The time period T = 1 year

So , the Simple Interest is given by the equation

Simple Interest = ( Principal Amount x Rate x Time Period ) / 100

Substituting the values in the equation , we get

Simple Interest S = ( 5000 x 3 x 1 ) / 100

On simplifying the equation , we get

Simple Interest S = 150000 / 100

Simple Interest S = $ 150

Therefore , the value of S is $ 150

Hence , the simple interest for the deposit is $ 150

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Answer:

52 sq mm

Step-by-step explanation:

you can break it into a long rectangle in the middle with dimensions of 2(6+8) or 2(14) = 28 sq mm

the triangle on the bottom has a base of (8-4) x height of 3, which gives 6 sq mm (you have to divide by 2)

the upper left rectangle is 6 x 3 = 18 sq mm

add: 28 + 6 + 18 = 52

Answer:

hello! if you're talking about x², then 2 is what we call: B. Exponent.

Answer:

Option B  (4/9)

Step-by-step explanation:

Probability is the number of outcomes that you would want to happen over the number of all outcomes that are possible. On each dice, there are 4 numbers less than five. Now we need to find all possible combinations of these numbers and we do that by mulitply 4 x 4.

4 x 4 = 16

Now we just find the number of all possible outcomes and that would be...

6 x 6 = 36

Now 16 over 36 will be...

16/36 = 4/9

Answer:

5

Step-by-step explanation: