4x−3y=8<br> 4x−y=−8<br> work out x and y

Hey...

CaHeK987 [17]

Answer:

$375000000$

Step-by-step explanation:

~Kandy~
Hope this helped!
Brainliest please!

5 0

2 years ago

Read 2 more answers

Bill has 4 times as much money as Ted. If Ted spends $100 and Ted spends 75, Bill will have 5 times as much money as ted. How mu

Dima020 [189]

<h3><u>Question:</u></h3>

Bill has four times as much money as Ted. If Ted spends $100 and Bill spends $75, Bill will have five times as much money as Ted. How much money do Bill and Ted have before and after spending money?

<h3><u>Answer:</u></h3>

Before spending money, Bill has $1700 and Ted has $425

After spending money, Bill has $ 1625 and Ted has $ 325

<h3><u>Solution:</u></h3>

Let the amount of money Bill has be "b"

Let the amount of money Ted has be "t"

Bill has 4 times as much money as Ted, we can say the following:

b = 4t ---------- eqn 1

If Ted spends $100 and Ted spends 75, Bill will have 5 times as much money as ted.

b - 75 = 5 ( t - 100 ) ----- eqn 2

Let us solve eqn 1 and eqn 2

Substitute eqn 1 in eqn 2

4t - 75 = 5( t - 100 )

4t - 75 = 5t - 500

5t - 4t = 500 - 75

From eqn 1,

b = 4(425) = 1700

So, before spending money, Bill has $1700 and Ted has $425.

<u><em>After spending money:</em></u>

Bill = b - 75 = 1700 - 75 = $ 1625

Ted = t - 100 = 425 - 100 = $ 325

8 0

3 years ago

A right circular cylinder has a height of 19 3/4 ft and a diameter 1 2/5 times its height.

Y_Kistochka [10]

Height of cylinder = $19\frac{3}{4} =19.75$ ft

Diameter of cylinder = $1\frac{2}{5}$ times its height = $1.4 * 19.75=27.65$ ft

Now Radius = half of diameter = $\frac{27.65}{2} =13.825$ ft

Now we have to find the Volume of cylinder

formula for Volume of cylinder is

Volume of cylinder = $\pi r^2 h$

let's plug the values

Volume of cylinder = $(3.14)*(13.825)^2 *(19.75)$

Plug the values in calculator

= 11852.9657 cubic feet

Round off the answer to two decimal places(i.e. hundredth)

= 11852.97 cubic feet

4 0

3 years ago

Read 2 more answers

Find the orthocenter for the triangle described by each set of vertices.

givi [52]

Answer:

The orthocentre of the given vertices ( 2 , -3.5)

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

The orthocentre is the intersecting point for all the altitudes of the triangle.

The point where the altitudes of a triangle meet is known as the orthocentre.

Given Points are K (3.-3), L (2,1), M (4,-3)

<em>The Altitudes are perpendicular line from one side of the triangle to the opposite vertex</em>

<em>The altitudes are MN , KO , LP</em>

<em> </em> Slope of the line

$KL = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-3)}{2-3} = -4$

The slope of MN =

The perpendicular slope of KL

= $\frac{-1}{m} = \frac{-1}{-4} = \frac{1}{4}$

The equation of the altitude

$y - y_{1} = m( x-x_{1} )$

$y - (-3) = \frac{1}{4} ( x-4 )$

4y +12 = x -4

x - 4 y -16 = 0 ...(i)

Step(iii):-

Slope of the line

$LM = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{-3-1}{4-2} = -2$

The slope of KO =

The perpendicular slope of LM

= $\frac{-1}{m} = \frac{-1}{-2} = \frac{1}{2}$

The equation of the altitude

$y - y_{1} = m( x-x_{1} )$

The equation of the line passing through the point K ( 3,-3) and slope

m = 1/2

$y - (-3) = \frac{1}{2} ( x-3 )$

2y +6 = x -3

x - 2y -9 =0 ....(ii)

Solving equation (i) and (ii) , we get

subtracting equation (i) and (ii) , we get

x - 4y -16 -( x-2y-9) =0

- 2y -7 =0

-2y = 7

y = - 3.5

Substitute y = -3.5 in equation x -4y-16=0

x - 4( -3.5) - 16 =0

x +14-16 =0

x -2 =0

x = 2

The orthocentre of the given vertices ( 2 , -3.5)

4 0

3 years ago

How is converting units from cups to pints like converting units to pounds? How is it different?

dedylja [7]

Because there all different worth different numbers just like stuff in the store

4 0

2 years ago

4x−3y=8 4x−y=−8 work out x and y