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nadezda [96]
3 years ago
6

The value of y is inversely proportional to the value of x. When y=40, x=5. What is the value of y when x=8

Mathematics
1 answer:
CaHeK987 [17]3 years ago
5 0
Since x and y are inversely proportional:

xy = c, where c is a constant

when y = 40 and x = 5 -> c = 40*5 = 200

So xy = 200

Then, when x = 8, y = 200/8 = 25
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Someone please help?
3241004551 [841]
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7 0
3 years ago
Consider A (-9, 4) and B (11, 17), find the coordinates for point P that partition A to B in a 3: 5 ratio.
Talja [164]

Answer:

C. (-1.5, 8.875)

Step-by-step explanation:

on a coordinate plane if point(x1,y1) and (x2,y2) is divided by a point p in ratio of m:n then coordinate of point p is given by

p = (nx1 + mx2/ m+n, ny1+my2/m+n)

_______________________________________________

Given point

A (-9, 4) and B (11, 17)

ratio 3:5

m:n = 3:5

m+n = 3+5 = 8

coordinate of point p that partition AB

x = (5*-9 + 3*11) / 5+3                   y =    (5*4 + 3*17) / 5+3

x = (-45 + 33) / 8                          y =    (20 + 51) / 8

x = (-12) / 8                                     y =    (71) / 8

x = -3 / 2 = -1.5                                    y =    8.875

Thus, coordinate of point p is (-1.5, 8.875).

7 0
3 years ago
4(x+5)+4x+8
kvasek [131]
B.) 8(x+4) is the best choice
6 0
3 years ago
Read 2 more answers
If f (x)=x^2, then f (4) = 4^2= 16
inn [45]

Answer: t^2

Step-by-step explanation:

if f(x)=x^2

then f(t)=t^2

4 0
3 years ago
Please I’m struggling
insens350 [35]

Answer:

1080cm²

Step-by-step explanation:

surface area=sum of the area of all the shapes

area of triangle=1/2*base*height

1/2*24*10=120*2(because there are two triangles)=240cm²

10*14=140cm²

24*14=336cm²

Area of slanting figure=26*14=364cm²

add all the results

240+140+336+364=1080cm²

6 0
3 years ago
Read 2 more answers
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