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2 years ago

Find coordinates for x+5y=10 and 3x+5y=0. I need to know how to do this plz explain.

Mathematics

2 answers:

maks197457 [2]2 years ago

4 0

Answer:

(-5,3)

Step-by-step explanation:

Method

There are several ways you can do this, but one of the best ways is to use a graphing coordinate calendar. The most popular one is Desmos Graphing Calculator. I've attached an image of my work below using the system.

Answer

As you can see, both equations intersect at a certain coordinate point. This coordinate point is the point you need for the answer. The intersection is (-5,3).

I hope this helps. If you have any more questions, please feel free to post them and someone will be able to help you, whether it's myself or others. Please leave a like, rating, and if possible, Brainliest. Have a great day!

Hitman42 [59]2 years ago

3 0

Answer:

x = -5

y = 3

Step-by-step explanation:

x+5y=10.........i

3x+5y=0........ii

From (i)

x = 10-5y.....iii

Substitute (iii) in equ(ii)

3(10-5y) + 5y =0

Expand the bracket

30 - 15y + 5y = 0

30 - 10y = 0

30 = 10y

30/10 = y

3 = y......(iv)

Substitute 3 for y in the first equation..

x+5y=10

x + (5×3) = 10

x = 10 - 15

= -5

x = -5 and y = 3

You might be interested in

g If a snowball melts so that its surface area decreases at a rate of 4 cm2/min, find the rate (in cm/min) at which the diameter

maks197457 [2]

Answer:

Rate of change of the diameter is equal to 0.053cm/min

Step-by-step explanation:

A snowball is of the shape of a sphere

Surface area of Sphere (S)= $4*pi*R^2$

Rate of change of surface area

dS/dt = -4 $cm^2/min$

the negative sign indicates the surface area is decreasing.

Radius = d/2 where d represents diameter

using this is the surface area equation

S = $4*pi*(d/2)^2$

= $pi*d^2$

dS/dt = 2*pi*d*d(d)/dt

4 = 2*pi*d*(d)/dt

d(d)/dt = 2/12*pi= $\frac{1}{6pi}$ cm/min

so the rate of change of the diameter is equal to 0.053cm/min

5 0

2 years ago

The total cost of an item including sales tax is directly proportional to its price. If the total cost of a $32 item is $33.60 ,

pav-90 [236]

Let the total cost of the item be represented by C and the price be represented by P, then given that the total cost of an item including sales tax is directly proportional to its price, thus

$C\propto P \\ \\ \Rightarrow C=kP$

where k is a constant.

Given that the total cost of a $32 item is $33.60, thus

$33.60=32k \\ \\ \Rightarrow k= \frac{33.60}{32} =1.05$

Therefore, the total cost on a $55 item is given by

$C=1.05\times55=\$57.75$