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4 years ago

Algebra Question Please help question and answer choices are in the picture

Mathematics

2 answers:

ziro4ka [17]4 years ago

3 0

The answer is 3n9 units. So the second one

musickatia [10]4 years ago

3 0

Well a cube has equal sides so the volume is side^3
To find a side you would find the cube root of 27n^27
Cube root of 27 is 3
Cube root of n^27 is (1\3) * 27 = 9
so the answer is
3n^9 units so B

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A company wishes to manufacture a box with a volume of 2424 cubic feet that is open on top and is twice as long as it is wide. f

olganol [36]

Let x = the width
Let 2x = the length
Let h = the height
then vol = x*2x*h. So we have 2x^2*h = 24
h=24/(2*x^2)=12/x^2
Surface area: two ends + 1 bottom + 2 sides (no top)
S.A. = 2(x*h) + 1(2x*x) + 2(2x*h)
S.A. = 2xh + 2x^2 + 4xh S.A. = 2x^2 + 6xh
Replace h with 12/x^2
S.A = 2x^2 + 6x(12/x^2)
S.A = 2x^2 + 6(12/x)
S.A = 2x^2 + (72/x)
Graph this equation to find the value of x for minimum material
Min surface area when x = 3.0 is the width then
2(3) = 6 is the length
Find the height:
h=12/(3.0)^2
h=1.33
Box dimensions for min surface area: 3.0 by 6 by 1.33; much better numbers
Check the vol of these dimensions: 3.0*6*1.33 ~ 24
graphic attachment

3 0

3 years ago

Solve this two column proof! (25 pts!)

ahrayia [7]

Answer:

1.) Given

2.)Given

3.)Angle bisector

4.)Perp. Segments

5.)substitution

6.)Reflexive

7.)ASA postulate

8.)CPCTC

9.)Def of isosceles triangle

Step-by-step explanation:

6 0

3 years ago

Help Please I hate Geometry

Alex

Answer:

Total area: 314 km

Area of the 90 arc: 78.5 km

Step-by-step explanation:

total area/4

314/4=78.5 exactly

5 0

4 years ago

Read 2 more answers

Please help! Brainliest to correct

vivado [14]

Answer:

Step-by-step explanation:

x +3 I x⁴ + 0x³ - 6x² + 0x -28 I x³ - 3x² + 3x - 9

x⁴ + 3x³

- -

-3x³ - 6x²

-3x³ - 9x²

+ +

3x² + 0x

3x² + 9x

- -

-9x -28

-9x - 27

+ +

-1

P(x) =(x +3)* (x³ - 3x² + 3x - 9) + (-1)

7 0

3 years ago

Help on 3 algebra questions please !!!***

madam [21]

Answer:

19) The domain is (12 , ∞) ⇒ answer C

17) The radical notation is $\sqrt[7]{18y^{2} }$

10) The definition of number i is √(-1) ⇒ answer C

Step-by-step explanation:

19)

* Lets explain the meaning of the domain of the function

- The domain of any function is the values of x which makes the

function defined

- Examples:

# In the fraction the denominator con not be zero, then if the function

is a rational fraction then the domain is all the values of x except

the values whose make the denominator = 0

# In the even roots we can not put negative numbers under the radical

because there is no even roots for the negative number belonges to

the real numbers, then the domain is all the values of x except the

values whose make the quantity under the radical negative

* Now lets solve the question

∵ f(x) = 3 √(x - 12)

- To find the domain let (x - 12) greater than zero because there is

no square root for negative value

∵ x - 12 > 0 ⇒ add 12 to both sides

∴ x ≥ 12

∴ The domain is all values of x greater than 12

* The domain is (12 , ∞)

17)

* Lets talk about the radical notation

- The radical notation for the fraction power is:

the denominator of the power will be the radical and the numerator

of the power will be the power of the base

- Ex: $x^{\frac{a}{b}}=\sqrt[b]{x^{a}}$

* Lets solve the problem

∵ (18 y²)^(1/7)

- The power 1/7 will be the radical over (18 y²)

∴ $(18y^{2})^{\frac{1}{7}}=\sqrt[7]{18y^{2}}$

* The radical notation is $\sqrt[7]{18y^{2} }$

10)

* Lets talk about the imaginary number

- Because there is no even root for negative number, the imaginary

numbers founded to solve this problem

- It is a complex number that can be written as a real number multiplied

by the imaginary unit i, which is defined by i = √(-1) or i² = -1

- Ex: √(-5) = √[-1 × 5] = i√5

* The definition of number i is √(-1)

3 0

4 years ago