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2 years ago

3m - 3 divided by 3 for m=8

Mathematics

2 answers:

KengaRu [80]2 years ago

6 0

Answer:

Either 7 or 23 - read note

Step-by-step explanation:

Substitute m for 8.

*Note: I'm not sure if anything is in parentheses so there are two possible answers depending on whether you want it done left to right or by order of operations*

Left to Right:

3(8) - 3 ÷ 3

24 - 3 ÷ 3

21 ÷ 3

Order of Operations:

3(8) - 3 ÷ 3

24 - 3 ÷ 3

24 - 1

xxMikexx [17]2 years ago

5 0

For m = 8

3m - 3/3
3(8) - 3/3
24 - 1
= 23

3/3 is the same thing as 1

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Answer:

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Step-by-step explanation:

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2 years ago

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Find the volume of the solid where the cone and half sphere are hollow. Use 3.14 for П ; height is 19 in; radius is 5 in. Round

Vera_Pavlovna [14]

Volume of Solids

The volume of the solid is 758.83 in³

Step-by-step explanation:

Given that the cone and half sphere is hollow

The volume of the cone = $1/3 \pi r^{2} h\\$

The Volume of the sphere = $4/3 \pi r^{3}$

So the Volume of the half sphere = $2/3\pi r^{3}$

The volume of solid = volume of cone + volume of the half sphere

$V = V_{1} + V_{2}$

Given

height h = 19 in

radius r = 5 in

$V_{1\\}$ = $1/3 \pi r^{2} h$

= 1/3 × 3.14 × 5 × 5 × 19

= 497.16 in³

$V_{2} = 2/3 \pi r^{3}$

= 2/3 × 3.14 × 5 × 5 × 5

= 261.67 in³

V = 497.16 in³ + 261.67 in³

= 758.83 in³

Hence the volume of the solid is 758.83 in³

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3 years ago

What is the value of the expression 4/2^-2?<br> a. ½<br> b. 1<br> c. 8<br> d. 16

Alexus [3.1K]

$2^{-2} = \frac{1}{2^{2} } = \frac{1}{4}$

$\frac{4}{2^{-2} } = \frac{4}{ \frac{1}{4} } = 4$ ÷ $\frac{1}{4} = 4*4= 16$

The answer is D. 16

8 0

2 years ago