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KatRina [158]
3 years ago
9

Solve for x pls help

Mathematics
1 answer:
zepelin [54]3 years ago
5 0

Your answer would be

A) 20.3

i am not sure about this but yeah also can i have brainliest

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A rectangular solid with a square base has a volume of 4096 cubic inches - determine the dimensions that yield the minimum surfa
Bumek [7]

Answer:

side of base, a = 10.1 inches, height, h = 40.1 inches

Step-by-step explanation:

Volume of rectangular solid, V = 4096 cubic inches

Let the side of base is a and the height is h.

V = a^2h\\\\4096 = a^2 h ..... (1)

surface area of the solid  

S = 2a^2 + 4 ah \\\\S = 2a^2 + 4 \times a \times \frac{4096}{a^2}    from (1)\\\S = 2a^2 + \frac{4096}{a}\\\\\frac{dS}{da}= 4 a - \frac{4096}{a^2}\\\\4 a - \frac{4096}{a^2} = 0 \\\\a^3 = 1024\\\\a =10.1 inches

So, h = 40.2 inches

5 0
2 years ago
LIAM GRAPHS HOW FAR HE BIKES EACH DAY. WHAT IS THE CONSTANT OF PROPORTIONALITY BETWEEN THE MILES HE BIKES AND THE DAY
Dvinal [7]
I will have to see it in numbers
3 0
3 years ago
What is the inverse of f(x)= cube root of x +2.
DiKsa [7]
F(x)=\sqrt[3]{x+2}
to solve for the inverse of a function you do 4 steps:
1. subsitute f(x) with y
2. switch y and x places
3. solve for y
4. subsitute y with f⁻¹(x)

so we have
f(x)=\sqrt[3]{x+2}
subsitute f(x) with y
y=\sqrt[3]{x+2}
switch x and y
x=\sqrt[3]{y+2}
solve for y

x=\sqrt[3]{y+2}
cube both sides
x^{3}=y+2
subtract 2 from both sides
x^{3}-2=y

subsitute y with f⁻¹(x)
f⁻¹(x)=x^{3}-2



the answer is f⁻¹(x)=x^{3}-2



8 0
3 years ago
Help me please !!!! I need to make sure I am correct with my thinking
Lana71 [14]
1.  Use the Pythagoras theorem
13^2 = x^2 + 5^2
solve for x and youll get the height of the roof.

2.  let x = length of the rpoe)-

x^2 = 9^2 + 12^2

3. Pythagoras again 
20^2 = x^2 + 12^2
7 0
3 years ago
Read 2 more answers
On peux m'aider svp
Alona [7]

Answer hey i dunno if you still need this but if you did could you translate to english

3 0
2 years ago
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