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3 years ago

Hey can I please get some help?

Mathematics

1 answer:

Leokris [45]3 years ago

8 0

Answer:

the anwcer is b

Step-by-step explanation:

HOPE THIS HELPS NOT 100% sure im like 98% sure

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madam [21]

With what? I need a picture or type the answer

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3 years ago

Read 2 more answers

12 stamps increased by 125 percent equals

PolarNik [594]

130 stamps is the answer you are looking for

6 0

3 years ago

The grid map shows the location of the houses of some of Kendra's friends. Which friend lives at

jenyasd209 [6]

Answer:

there is no picture and i think something is messed up because the choices dont make any sence

Step-by-step explanation:

6 0

3 years ago

Verizon [17]

Answer:

Step-by-step explanation:

The vertex form of an equation of the parabola:

f(x) = a(x - p)² + q

vertex is (2, 4) so p = 2, q = 4

so:

f(x) = a(x - 2)² + 4

the parabola goes through the point (-5, 2) so x=-5, f(x)=2

2 = a(-5-2)² + 4

- 2 = a(49)

a = -²/₄₉

Therefore the equation of the parabola in vertex form:

f(x) = -²/₄₉(x - 2)² + 4

6 0

4 years ago

A box with a square base and closed top is required to have a volume of 27,000 cm3

julia-pushkina [17]

Answer:

h=30cm

Base sides, x=30cm

Step-by-step explanation:

Let x be the dimension of the sides and h the dimension of height;

$V=x^2h$

#Material used is directly proportional to surface area. Minimizing surface area will minimize the amount of material used.

$Area=2x^2+4xh$

Find area as a function of x:

$V=x^2h=27000\\\\h=\frac{27000}{x^2}\\\\Area=2x^2+4x(\frac{27000}{x^2})\\\\=2x^2+\frac{108000}{x}$

To minimize Area, we find the first derivative of Area:

$A=2x^2+\frac{108000}{x}\\\\A\prime=4x+\frac{108000}{x^2}=0\\\\\frac{4x^3-108000}{x^2}=0\\\\4x^3=108000\\\\x=30$

#find the second derivative to verify the minimum:

$A\prime=4x+\frac{108000}{x^2}\\A\prime\prime=4x+\frac{108000}{x^3}=124, x=30$

Substitute x in the volume equation to find h:

$h=\frac{27000}{x^2}\\\\=\frac{27000}{30^2}\\\\h=30$

Hence, the dimensions of the box that minimize the amount of material used h=30cm and x=30cm

8 0

4 years ago