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3 years ago

What's the formula for a cylinder?

2 answers:

6 0

Area: ( $\pi r^{2}$ + $\pi dh$ where d is diameter h is height and the r is radius)
Volume: Base x height: $\pi r^{2}$ $*h$

Phoenix [80]3 years ago

6 0

volume= pie times radius squared times height

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X - 4y = 12 X - 5y = 15 PLS HELP ME SOLVE USING ELIMINATION

balu736 [363]

Answer:

(0, -3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

x - 4y = 12

x - 5y = 15

Step 2: Solve for y

Elimination

Subtract 2 equations: y = -3

Step 3: Solve for x

Define original equation: x - 4y = 12
Substitute in y: x - 4(-3) = 12
Multiply: x + 12 = 12
Subtract 12 on both sides: x = 0

7 0

2 years ago

You and your friend split a restaurant bill and lave a tip. You pay half plus 5$ your friend pays half of the bill plus 25% oh h

SIZIF [17.4K]

Well the other guy had 20% but then he got five dollars now it is 25% so what is 25% +25%

6 0

3 years ago

Symbols The difference in speeds of El Toro and T Express is 5 miles per hour. If El Toro has the greater speed, write and solve

Maslowich

Let the speed of El Toro be x mph and that of T Express be y mph.

Given : Speed of El Toro > Speed of T Express

i.e, x > y

Also, the difference in the speeds of El Toro and T Express is 5 mph.

So, the required equation is

x - y = 5

To determine the speed of a train, the speed of other is required.

The speed of El Toro = Speed of T Express + 5

The speed of T Express = Speed of El Toro - 5

5 0

3 years ago

Read 2 more answers

What is 2h+3 when h=6

erica [24]

Answer:

Step-by-step explanation:

After plugging in the 6, multiply 2 and 6 and then add 3. This equals 15.

7 0

3 years ago

Read 2 more answers

If the length of side a is 12 centimeters, measure of angle B = 36 degrees and measure of angle C = 75 degrees , what is the len

Fofino [41]

The length of side b is 7.61 m.

Here's how the length was calculated:

Let:

length of side a = 12 centimeters
B = 36 degrees
C = 75 degrees

In order to solve an AAS triangle, use the three angles, add to 180 degrees to find the other angle, then, use The Law of Sines to find each of the other two sides.

A = 180 - (36 + 75) = 69 degrees

by using the law of sines:

a / sin A = b / sin B = c/ sin C

we will substitute the given values:

12 / sin (69) = b / sin (36)

b = unknown

12 / 0.93 = b / 0.59

12.9 = b / 0.59

b = 12.9 * 0.59

b =7.61 cm (length of side b)

6 0

3 years ago