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mezya [45]
4 years ago
15

F(x)=√(10-3x) find the formula

Mathematics
1 answer:
Otrada [13]4 years ago
8 0
Let y=f(x)
y=sqrt(10-3x)
you want to make x the subject

square both sides
y²=10-3x
3x=10-y²
x=(10-y²)/3

now replace y with x
f^-1(x)=(10-x²)/3
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Determine whether quantities vary directly or inversely and find the constant of variation. If 5 bushels of wheat weigh 136 kg,
pentagon [3]

Let the bushels of wheat is b and weight of the wheat is w.

We can say that more the bushels of wheat more will be the weight of the wheat.

Hence, the quantities  vary directly.

Therefore, we have

b=kw,  where k is the constant of variation.

Now, we have been given that 5 bushels of wheat weigh 136 kg. Thus, we have

5=136k\\
\\
k=\frac{5}{136}

Thus, the constant of variation is  \frac{5}{136}

Now, we have been given 3.5 bushels of wheat. Hence, we have

3.5=\frac{5}{136} w\\
\\
w=\frac{136\times 3.5}{5} \\
\\
w=95.2

Therefore, 3.5 bushels of wheat weigh 95.2 kg


4 0
4 years ago
Read 2 more answers
Please help me with 7 and 9 I’m really confused and I really need help!!
Margarita [4]

Answer:

  7) K'(1, 1), N'(4, 0), Q'(4, 4)

  9) F'(4, 2), W'(4, 5), K'(3, 2)

Step-by-step explanation:

When you are not sure about reflections and rotations, it can be useful to actually draw a graph. The line of reflection is the perpendicular bisector of the segment connecting a point with its image. That is, the image is the same distance from the line on the other side. A point that is <em>on</em> the line of reflection is "invariant," it doesn't move.

__

7) Reflecting across the x-axis changes the sign of the y-coordinate. That is all. Any point on the x-axis (y=0) is unchanged. The transformation is ...

  (x, y) ⇒ (x, -y)

__

9) Reflecting across a vertical line changes the x-coordinate. The new value of x will be ...

  x' = 6 - x

The "6" is double the x-coordinate of the vertical line. The transformation is ...

  (x, y) ⇒ (6-x, y)

_____

<em>Derivation of the formula for reflection on x=3</em>

In general if M is the midpoint of a point (A) and its reflection (A'), then we have ...

  M = (A +A')/2

  2M = A + A'

  2M -A = A'

When a point is reflected across a vertical line, all of the y-coordinate values remain unchanged. So, for A=(x, y) and M=(3, y), we have ...

  A' = 2(3, y) -(x, y) = (6-x, 2y-y)

  A' = (6 -x, y)

So, the reflection transformation across the line x = 3 is ...

  (x, y) ⇒ (6-x, y)

6 0
3 years ago
Find the value of Y for the given value of x
LUCKY_DIMON [66]
Y=-4x+6 x=1
y=-4(1)+6
y=-4+6
y=2


6 0
3 years ago
cow is tied to a tree on grazing land with a 9 -meter rope What is the longest distance around that it can cover ?​
Sholpan [36]
Radius = 9m
Diameter = 18 m
Area = 254.34 squared m
Circumference = 56.52 m

I’m guessing is asking for the circumference because it says around
3 0
3 years ago
a cylindrical vase has a diameter of 6 inches at the bottom of the vase there are 9 marbles each of diameter 3 inches the vase i
KiRa [710]

Answer:

<h2>The volume of water in the vase is 339.33 in^3</h2>

Step-by-step explanation:

To calculate the volume of water in the vase we need the following parameters

1. the diameter/radius of the vase

2. the height /level of water in the vase

Given data

diameter d= 6 in

radius = d/2= 6/2 = 3 in

height of water h= 12 in

we know that the expression for the volume of a cylinder is given as

volume=  \pi r^2h

Inserting our data we have

volume= 3.142*3^2*12\\\volume= 3.142*9*12\\\volume= 339.33 in^3

3 0
3 years ago
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