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3 years ago

Does the point (2,3) lie on the graph of y=3x-4

Mathematics

2 answers:

Paul [167]3 years ago

8 0

Use substitution to find out

x=2
y=3

so
3=3(2)-4
3=6-4
3≠2

no, this point does NOT lie on the graph of y=3x-4

Lina20 [59]3 years ago

5 0

Answer:

(2,3) does not lie on the graph of y=3x-4

Step-by-step explanation:

For any point to lie on the graph of a function it must satisfy the function.

So, (2,3) lies on the graph of function y=3x-4 if it satisfies it

i.e. at x=2 ,y=3

Putting x=2 in y=3x-4,we get

y=3×2-4

=6-4

Hence, when x=2,y≠3

so, (2,3) does not lie on the graph of y=3x-4

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marishachu [46]

Answer:

Step-by-step explanation:

You multipy 5 by 3 by 2

8 0

2 years ago

Use simpson's rule with n = 10 to approximate the area of the surface obtained by rotating the curve about the x-axis. compare y

Lubov Fominskaja [6]

y = ln x , 1 <= x <= 3, about x axis and n = 10, dy/dx = 1/ x

S = (b a) ∫ 2π y √( 1 + (dy/dx) ^2) dx

so our f(x) is 2π y √( 1 + (dy/dx) ^2)

(b - a) / n = / 3 = (3-1) / 30 = 1/15

x0 = 1 , x1 = 1.2, x2 = 1.4, x3 = 1.6 ....... x(10) = 3

So we have , using Simpsons rule:-

S10 = (1/15) ( f(x0) + 4 f(x1) + 2 f)x2) +.... + f(x10) )

= (1/15) f(1) + f(3) + 4(f(1.2) + f(1.6) + f(2) + f(2.4) + f(2.8)) + 2(f(1.4) + f(1.8) + f(2.2) + f(2.6) )

( Note f(1) = 2 * π * ln 1 * √(1 + (1/1)^2) = 0 and f(3) = 2π ln3√(1+(1/3^2) = 7,276)

so we have S(10)

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5 0

3 years ago

What percent of 180 is 30?

Ratling [72]

Answer:

16.67

Step-by-step explanation:

30: 180÷100 =

( 30÷00): 180 =

3000: 180 = 16.67

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3 years ago

What is the sun of 185 and h

Ksenya-84 [330]

Answer:

185 + h

Step-by-step explanation:

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Sum means the answer to an addition problem, so we need to add.

185 + h

This expression can not be simplified any further, so 185 + h is your answer.

Hope this helps :)

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2 years ago

Solve x2-8x=3 by completing the square. which is the solution set of the equation

Mazyrski [523]

we have

$x^{2}-8x=3$

Complete the square. Remember to balance the equation by adding the same constants to each side

$x^{2}-8x+16=3+16$

$x^{2}-8x+16=19$

Rewrite as perfect squares

$(x-4)^{2}=19$

$(x-4)^{2}=19\\ (x-4)=(+/-)\sqrt{19} \\ \\ x1=4+\sqrt{19} =8.359\\ x2=4-\sqrt{19} =-0.359$

therefore

the answer is

$x1=4+\sqrt{19} =8.359\\x2=4-\sqrt{19} =-0.359$

5 0

3 years ago

Read 2 more answers