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3 years ago

State whether every point on the graph is a solution of the equation. Explain why or why not.

Mathematics

1 answer:

k0ka [10]3 years ago

8 0

<span>Every point shown on the graph is not a solution of the equation because when the coordinates of the points are substituted into the equation, the equation is not true for all the points.
[the third point (3, 2) is not a solution to the point]
</span>

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blagie [28]

Answer:

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3 years ago

Find the sum and product of the roots. 3x^<br> 2 - 4x - 7 = 0

victus00 [196]

Given the quadratic function, to get the roots we factorize:
3x²-4x-7=0

3x²+3x-7x-7=0
3x(x+1)-7(x+1)=0
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thus the roots are
x=-1 or x=3/7
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3 years ago

Let V be the volume of a right circular cone of height h=14 whose base is a circle of radius R=2. An illustration a right circul

Alla [95]

Answer:

The area of a horizontal cross section at a height is $\pi\times(2-\dfrac{y}{7})^2$

Step-by-step explanation:

Given that,

Height = 14 m

Radius = 2 m

Let V be the volume of a right circular cone

We need to calculate the value of R

Using given data

$\dfrac{h}{r}=\dfrac{h-y}{R}$

Put the value into the formula

$\dfrac{14}{2}=\dfrac{14-y}{R}$

$7R=14-y$

$R=2-\dfrac{y}{7}$

We need to calculate the area of a horizontal cross section at a height y

Using formula of area

$A=\pi R^2$

Put the value into the formula

$A=\pi\times(2-\dfrac{y}{7})^2$

Hence, The area of a horizontal cross section at a height is $\pi\times(2-\dfrac{y}{7})^2$

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3 years ago

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tangare [24]

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tangare [24]

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2 years ago