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2 years ago

(x+1)(x+2) = K(3x+7)

Mathematics

2 answers:

Sati [7]2 years ago

4 0

Hope it helps you friend

ehidna [41]2 years ago

3 0

K = (x + 1) (x + 2) /3x + 7

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Select all of the following that are quadratic equations.

kifflom [539]

A quadratic equation is one in which the highest exponent of x is 2.
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3 years ago

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kaheart [24]

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2 years ago

What is the volume of the figure down below?

11111nata11111 [884]

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3 years ago

A solid lies between planes perpendicular to the x-axis at x = -2 and x = 2. The cross-sections perpendicular to the x-axis b

icang [17]

Answer:

V = 128π/3 vu

Step-by-step explanation:

we have that: f(x)₁ = √(4 - x²); f(x)₂ = -√(4 - x²)

knowing that the volume of a solid is V=πR²h, where R² (f(x)₁-f(x)₂) and h=dx, then

dV=π(√(4 - x²)+√(4 - x²))²dx; =π(2√(4 - x²))²dx ⇒

dV= 4π(4-x²)dx , Integrating in both sides

∫dv=4π∫(4-x²)dx , we take ∫(4-x²)dx and we solve

4∫dx-∫x²dx = 4x-(x³/3) evaluated -2≤x≤2 or too 2 (0≤x≤2) , also

∫dv=8π∫(4-x²)dx evaluated 0≤x≤2

V=8π(4x-(x³/3)) = 8π(4.2-(2³/3)) = 8π(8-(8/3)) =(8π/3)(24-8) ⇒

V = 128π/3 vu

8 0

3 years ago

Choose the smallest fraction? 3/4 1/5 3/10 1/7

Evgesh-ka [11]

Answer:

Hey there!

3/4= 0.75

1/5=0.2

3/10=0.3

1/7=0.14

Thus, 1/7 is the smallest fraction.

Hope this helps :)

5 0

2 years ago

(x+1)(x+2) = K(3x+7)​

(x+1)(x+2) = K(3x+7)