Help!! I will give brainlest

Answer:

This is an inverse variation, and the constant of variation is k = 2.

Step-by-step explanation:

Direct variation is something like:

y = k*x

Where k is the constant of variation.

So as x increases also increases y.

Inverse variation is something like:

y = k/x

k is the constant of variation.

In this case, if x increases, y decreases.

Now let's look at the equation:

-10 + 15*x*y = 20

Let's isolate y in one side of the equation:

15*x*y = 20 + 10 = 30

15*x*y = 30

y = 30/(15*x) = (30/15)/x = 2/x

y = 2/x

Then we can conclude that this is an inverse variation, with a constant of variation equal to 2.

Answer:

AB=3

Step-by-step explanation:

tell me if you want detailed proof

Answer:

13

Step-by-step explanation:

f(2) = 2² = 4

g(4) = 3(4) + 1 which is 13

Answer:

D) [tex]6+2\sqrt{6}[/tex]

Step-by-step explanation:

[tex]2\sqrt{3} *(\sqrt{2} +\sqrt{3} )\\\\6+2\sqrt{6}[/tex]

Answer:

Answer:

m<A = 35

m<B = 55

Step-by-step explanation:

Complementary angles mean the 2 angles add up to 90 so:

y - 16 + y + 4 = 90

2y - 12 = 90

2y = 102

y = 51

m<A:

y - 16

51 - 16

35

m<B:

y + 4

51 + 4

55

Answer:

x = 80 degrees

Step-by-step explanation:

it says right there

9514 1404 393

Answer:

  x = 80°

Step-by-step explanation:

The measure of an arc is the same as the measure of the central angle it subtends.

  x = 80°

Answer:

5 and 6

Step-by-step explanation:

-5 x 6 = -30

-5 + (6) = 1

x2 + 1x - 30 = 0

(X - 5 ) (X + 6)

To summarize, since -5 and 6 multiply to -30 and add up 1, you know that the following is true:

x2 + 1x - 30 = (X - 5 ) (X + 6)

Answer: 11

Step-by-step explanation:

Let the 5 numbers be x,x+1,x+2,x+3 and x+4.

Therefore,

x + x+1 + x+2 + x+3 + x+4 = 65

5x + 10 = 65

5x = 65 - 10

5x = 55

x = 55/5

x = 11

Therefore, the 5 numbers are 11, 12, 13, 14 and 15.

The first number is 11

Answer:

/12 = 24: d = 288 songs downloaded.

Hope this helps. :)

The equation that represents the given situation is x/12 = 24 and the number of songs downloaded by Oliver is 288.

Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.

This relationship is illustrated by the left and right expressions being equal. The left-hand side equals the right-hand side is a basic, straightforward equation.

As per the instructions given in the question,

Assume that the number of songs downloaded by Oliver in a year is x.

Then, it is divided by 12 and equal to 24.

So, the equation will be,

x/12 = 24

And, the number of songs downloaded by him will be,

x = 24 × 12

x = 288 songs.

To know more about equation:

https://brainly.com/question/29657983

#SPJ2

Answer:

x = 5, Y = 4

Step-by-step explanation:

3x -2y = 7

-3x +9y = 21. (multiple the whole thing by 3 to get the xs to cancel)

7y = 28

y = 4

substitute y to find x

3x - 2(4) = 7

3x -8 = 7

3x = 15

x = 5

Answer:

Ryan has 5 crisps

Step-by-step explanation:

If ben has 7 times more than ryan

therfore 35/7= ryan crisps

hence ryan has 5 crisps

Mark as brainliest

Answer:

-3a + 11b + 2c

Step-by-step explanation:

Answer:

a) additive property of equality

Step-by-step explanation:

You canceled the addition of 21 to help simplify the equation.

I hope this helps you

Answer:

Jess dug 2.4 inches deep on Wednesday.

Step-by-step explanation:

9.7-7.3=2.4 9 . 7

-

7 . 3

___

2 . 4

Answer:

2.4 inches

Step-by-step explanation:

i did the assignment :)

Answer:

(2,1)

Step-by-step explanation:

Answer:

Given vertices:

Plot the points.

We see the diagonals are:

The midpoint of any diagonal is the intersection of the diagonals.

Use midpoint formula to find the coordinates:

The point is (2, 1)

Answer:

5120

Step-by-step explanation:

5 20 80 320 1280 5120

it multiplies by 4 each time.

Answer:

C

Step-by-step explanation:

Answer:

Step-by-step explanation:

You can solve it using the calculator that came with windows -- as far back as windows 7. It probably goes back even further, but that's all I can guarantee. Your phone might be able to do it as well.

y = 25000 * 0.007^5

y = 25000 * 1.6807 *10^-11

y = 0.00000042 is what my calculator gives.

Windows can probably do better.

Answer:

Well Ima put the link, hope it works!

jkjk

The answer here is 240 in^3

Step-by-step explanation:

Well You have a triangular prism which all you need is the base. The base cna be found by finding the area of the surface triangle.

Triangle area formula: 1/2(bh)

Well base is 4 height is 10, 4*10=40. 40/2= 20

Now the heighth given or (h) is 12. TO find the volume jsut multiply the height by the base

20*12=240

Plus don’t click the links, their viruses.

Answer:

31

Step-by-step explanation:

a + (n-1)d  where a = first term;  n = which number we want;  d = common difference.

=> 4 + (10 - 1)3

=> 4 + (9)*3

=> 4 + 27

=> 31

Answer:

1 hour

Step-by-step explanation:

The time it takes to travel to a destination varies inversely as its speed

T= k/S

K= TS

Time= 2 hours

Speed= 40mph

K= 2×40

= 80

Therefore if the average speed changes to 80mph then the new travel time can be calculated as follows

T= 80/80

= 1 hour

Hence the new travel time is 1 hour

Answer:

125°

Step-by-step explanation:

......ur welcome.........

Answer:

Step-by-step explanation:

Answer is in the picture. I promise its not a bad picture.

Answer:

Same I'll help you all if you guys try to help me with my recent question.

Step-by-step explanation:

Answer:

5 trips

Step-by-step explanation:

The volume of bed of dump truck :

From the dimension given in the attached picture ;

Volume of bed = 4 ft * 8 ft * 6 ft = 192 ft³

This means dump truck can convey 192 ft³ of salt per trip

Number of trips required to convey 800 ft³ of salt :

800 ft³ / 192 ft³

= 4.166

= 5 trips