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Aleonysh [2.5K]
2 years ago
6

The school is selling potted plants as a fundraiser.Kara sold 12 ferns and 8 ivy plants for $260.Paul sold 15 ivy plants and 6 f

erns for $240.what is the selling price of each plant?
Mathematics
1 answer:
vovangra [49]2 years ago
8 0

x=ferns ; y=ivy

12x+8y=260

6x+15y=240

x=60 -(15/6)y

12(60+ (15/6)y + 8y = 260

x=60 -(15/6)y

720 - 30y + 8y = 260

x=60- (15/6)y

-30y +8y= 260-720 ==> -22y= -460

x=60 -(15/6)y

y= (-460)/(-22)= 20.9090909091

y=20.90

x=60 -(15/6)×20.90= 7.75

×(ferns)=7.75$

y(ivy)=20.90$

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Do #11 I need help pleae
ryzh [129]
330 page/(3/4 Hour):==> 330 : 3/4
To solve this division you have to MULTIPLY the 1st term by the reciprocal of the 2nd (the reciprocal of 3/4 is 4/3), so

330 x 4/3 = (330x4)/3 = 440
330 pages were read in 3/4 Hour (given)  & in 1 hour. could be read

3 0
2 years ago
Is the given point interior , exterior, or on the circle k (x+2)2 + (y-3)2 =18 P (8,4)
Mnenie [13.5K]
One way would be to find the distance from the point to the center of the circle and compare it to the radius

for
(x-h)^2+(y-k)^2=r^2
the center is (h,k) and the radius is r

and the distance formula is
distance between (x_1,y_1) and (x_2,y_2) is
D=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}


r=radius
D=distance form (8,4) to center

if r>D, then (8,4) is inside the circle
if r=D, then (8,4) is on the circle
if r<D, then (8,4) is outside the circle


so
(x+2)^2+(y-3)^2=18
(x-(-2))^2+(y-3)^2=(\sqrt{18})^2
(x-(-2))^2+(y-3)^2=(3\sqrt{2})^2

the radius is 3\sqrt{2}
center is (-2,3)

find distance between (8,4) and (-2,3)

D=\sqrt{(8-(-2))^2+(4-3)^2}
D=\sqrt{(8+2)^2+(1)^2}
D=\sqrt{10^2+1}
D=\sqrt{100+1}
D=\sqrt{101}




r=3\sqrt{2}≈4.2
D=\sqrt{101}≈10.04

do r<D

(8,4) is outside the circle

6 0
3 years ago
Solve using any method 4x-y=20 and -2x-2y=10
dsp73

Answer:

if you're trying to find the slope, it is (3, -8) were you looking for the slope?

Step-by-step explanation:

i hope this helps, have a great day:)

7 0
2 years ago
Read 2 more answers
write the equation In point slope form of the line with slope 2/5 and passing through the point (-8,1)
Dominik [7]
Point-slope:

y-y1= m(x-x1)

Plug in what you know. 

y1= 1 and x1= -8

y-1= 2/5(x-(-8)
y-1= 2/5(x+8)

Distribute. 

y-1=.4x+ 3.2 <- that is the final answer

I hope this helps!
~kaikers


5 0
2 years ago
Use complete sentences to describe why for any set B, that the empty set would be a subset of it.
ella [17]
Because empty set has no element which automatically make it a subset of every set. 

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
6 0
3 years ago
Read 2 more answers
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