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Advocard [28]
2 years ago
11

Kady and Scott both invest £800.

Mathematics
1 answer:
tresset_1 [31]2 years ago
6 0

Answer:we smoking fredoooooooooo

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Can anyone help me with this problem??
Arlecino [84]

9514 1404 393

Answer:

  (a)  4/3

  (b)  y -3 = 4/3(x -1)

  (c)  y -3 = -3/4(x -1)

  (d)  r = 5

Step-by-step explanation:

a) The slope is given by the slope formula:

  m = (y2 -y1)/(x2 -x1)

  m = (7 -3)/(4 -1) = 4/3

__

b) The radius is normal to the circle. The point-slope form of the equation for a line can be useful here:

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

For slope 4/3, the line through point (1, 3) will have the equation ...

  y -3 = 4/3(x -1) . . . . point-slope equation of the normal

__

c) The tangent is perpendicular to the radius. It will have a slope that is the opposite reciprocal of the slope of the radius: -1/(4/3) = -3/4.

  y -3 = -3/4(x -1) . . . . point-slope equation of the tangent

__

d) The radius can be found from the distance formula.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((4 -1)² +(7 -3)²) = √(3² +4²) = √25 = 5

The radius of the circle is 5.

4 0
3 years ago
A store is having a sale where school supplies are 30% off the original price a backpack is on sale for $11.20 what was the orig
adelina 88 [10]
The answer to this quesion will be $16.00

5 0
3 years ago
A skateboard halfpipe is being designed for a competition. The halfpipe will be in the shape of a parabola and will be positione
levacccp [35]

Answer:

Option A , (0, 20); y equals one over eighty times x squared plus 20

Step-by-step explanation:

 

The equation of parabola is given by  

(X-h)^2 = 4p(Y-k)^2

In this case h = 0  

So we get  

Y = X^2/4P +k

Focus point is (h, p+k) , p+k = 40  

Hence h, k = (0,20)

P = 40-k = 20

Equation Y = X^2/80 +20  

Hence, option A is correct

6 0
3 years ago
What are the slope and the y-intercept of the linear function that is represented by the table? x y –1 0 0 3 The slope is –3, an
tiny-mole [99]

Answer:

The y intercept is 3

Step-by-step explanation: The y interception ocurrs when X=0,so in the x,y pais you have (0,3), indicating that when X=0, Y=3. Also, according to the information, the linear equation would be: y=mx+b being m=slope and b the interception of the y axis, so the equation would be: y =-3x+3.

6 0
4 years ago
YALL THIS IS DUE
slamgirl [31]
Start with the bottom surface area, 7x7=49

then go to the triangles, base times height divided by 2, so (7x14)/2=49
and since there are 4 triangles, multiply 49 by 4 = 196 and add the area of the bottom, which all adds up to 245
8 0
4 years ago
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