3 years ago

Eleanor was looking to save money and make her home more energy efficient. She heard about LED

Mathematics

1 answer:

faust18 [17]3 years ago

8 0

It’s going be 200 per hour and 70 min

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Find r(x + 1) if r(x) = x3 + x + 1

suter [353]

Substitute x + 1 as x in the equation of the function:

$r(x)=x^3+x+1\\\\r(x+1)=(x+1)^3+(x+1)+1=x^3+3(x^2)(1)+3(x)(1^2)+1^3+x+1+1\\\\=x^3+3x^2+3x+x+2=x^3+3x^2+4x+2$

Used

$(a+b)^3=a^3+3a^3b+3ab^3+b^3$

7 0

3 years ago

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Choose the point slope form of the equation below that represents the line passing through the point (-6,4) and (2,0)

nirvana33 [79]

The point slope form or the equation of a line is :

y - y1 = m(x - x1)

First find the slope between the two coordinates:

m = y2-y1/x2-x1

m = 0-4 / 2-(-6)

m = -4 / 8

m = - 1/2

Now create the point slope form / equation of a line:

y - 4 = - 1/2(x - (-6))

y - 4 = - 1/2(x + 6)

OR you can have

y - 0 = - 1/2(x - 2)

8 0

4 years ago

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What is 4 + 15 × 7 =

il63 [147K]

Answer:

109

Step-by-step explanation:

$4 + 15 \times 7 \\ = 4 + 105 \\ = 109$