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Flura [38]
3 years ago
8

If 445 to base n is equal to 173,find the value of n​

Mathematics
1 answer:
Troyanec [42]3 years ago
6 0

Answer:

6

(4×n²) + (4×n¹) + (5×n^0) = 173

4n² + 4n + 5 = 173

4n² + 4n = 168

divide through by 4

n² + n - 42 = 0

n² + 7n - 6n - 42= 0

(n + 7)(n - 6) = 0

n = -7 or 6

but the solution is 6 since base is not negative.

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fredd [130]
96 sq units and 460 pi cm2
6 0
4 years ago
A sphere and a cylinder have the same radius and height. The volume of the cylinder is 27 pi feet cubed.
LenaWriter [7]

Answer:

C. V = two-thirds (27)

Step-by-step explanation:

Given

Solid Shapes: Cylinder and Sphere

Volume of Cylinder = 27π ft³

Required

Volume of the sphere.

From the question,

<u>We have that</u>

1.  The volume of the sphere is the same as the volume of the cylinder

2. The height of the sphere is the same as the height of the cylinder.

From (2) above;

This means that the height of the cylinder equals the diameter of the sphere.

Let h represent the height of the sphere and d represent the diameter of sphere.

Mathematical, d = h

Recall that radius, r = r = \frac{d}{2}

Substitute h for d in the above expression

r = \frac{h}{2}. ----- (take note of this)

Calculating the volume of a cylinder.

V = πr²h

Recall that  V = 27; This gives us

27 = πr²h

Divide both sides by h

\pi r^2 = \frac{27}{h}

-------------------

Calculating the volume of a sphere

V = \frac{4}{3}\pi r^3

Expand the above expression

V = \frac{4}{3}\pi r^2 * r

Substitute \pi r^2 = \frac{27}{h}

V = \frac{4}{3} * \frac{27}{h} * r

Recall that r = \frac{h}{2}

So,

V = \frac{4}{3} * \frac{27}{h} * \frac{h}{2}

V = \frac{4}{3} * \frac{27}{2}

V = \frac{2}{3} * 27

V = \frac{2}{3} (27)

V = two-third (27)

4 0
3 years ago
Explain how to write 5/3 as a product of a whoke number and a unit fraction​
KIM [24]

Answer:

1 \frac{2}{3\\}

Step-by-step explanation:

5/3 = 3/3 * 2/3

3/3 = 1

So the answer is 1 \frac{2}{3\\}

5 0
4 years ago
Someone please help I need this ASAP Please.
ExtremeBDS [4]

Answer:

i think 2. is :   1and 3. is

Step-by-step explanation:

5 0
3 years ago
many villages have water tanks that they use for farming .jeffs village has a cylinder shaped water tank that has a 4 m radius a
andreev551 [17]
The volume is: 452.16 m

3 0
3 years ago
Read 2 more answers
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