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3 years ago

Given that a trapezoid has the following dimensions, find the area. Area = ________ units2

1 answer:

8 0

The formula for the area of a trapezoid is A = a+b/2 * h. So just plug in the dimensions.
A = 5 + 3/2 * 5
A = 8/2 * 5
A = 4 * 5
A = 20 units²
I hope this helps love! :)

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1. Your long distance telephone provider offers two plans. Plan A has a monthly fee of $15 and $0.25 per minute. Plan B has a mo

OLga [1]

1. 0.25x + 15 = 0.05x + 20
0.20x = 5
x = 25

2. 1/3x = x-22
-2/3x = -22
x = 33

3 0

4 years ago

? Don't Send links, don't Write random things and get the points for free.

alekssr [168]

Answer:

$V = 1847.26\ ft^3$

Step-by-step explanation:

Step 1: Determine the volume

$V=\pi r^2h$

$V = \pi *(7\ ft)^2 * (12\ ft)$

$V = \pi *49\ ft^2 * 12\ ft$

$V = \pi * 588\ ft^3$

$V = 1847.26\ ft^3$

Answer: $V = 1847.26\ ft^3$

6 0

2 years ago

What do I need to do for 10,11,12.

vlabodo [156]

You must divide the cost in 2011 by 1955 for each item and round your answer to the nearest hundredth after.

Hope that helps!

5 0

3 years ago

Tanya wants to test the theory that the exterior angles of a

PilotLPTM [1.2K]

Answer:

$f + e + d = 360^o$

Step-by-step explanation:

The question is incomplete, as what is required is not stated and the triangle is not given.

So, I will solve generally.

The proof is as follows (see attachment for triangle)

From the attachment, we have:

$a + f = 180$

$b + e = 180$

$c + d = 180$

Make f, e and d the subject

$f = 180 - a$

$e = 180 - b$

$d = 180 - c$

Add up the equations

$f + e + d = 180 -a + 180 - b + 180- c$

Collect like terms

$f + e + d = 180 + 180+ 180-a- b - c$

$f + e + d = 540-a- b - c$

We have:

$f + e + d = 540-(a+ b + c)$

$a + b + c \to 180$ --- angles in a triangle

So, we have:

$f + e + d = 540-180$

$f + e + d = 360^o$ --- proved

6 0

3 years ago

four 3 megawatt wind turbines can supply enough electricity to power 3000 homes. How many turbines would be required to power 55

fiasKO [112]

Answer:

The number of turbines is 74

Step-by-step explanation:

* Lets explain how to solve the problem

- Four 3 megawatt wind turbines can supply enough electricity

to power 3000 homes

∴ The number of turbines is 4

∵ Each turbine give 3 megawatt

∴ The four turbines give ⇒ 4 × 3 = 12 megawatt

- This quantity give enough electricity to power 3000 homes

∴ The number of homes for the 12 megawatt is 3000

- We need to find how many turbines can cover enough electricity

to power 55,000 homes, so we must to know the quantity of

electricity that be enough to power 55,000 homes

* <em>Lets use the cross multiplication to solve the problem</em>

∵ megawatt : number of homes

12 : 3,000

? : 55,000

- <em>By using cross multiplication</em>

∴ $?=\frac{(55,000)(12)}{3,000}=\frac{660,000}{3000}=220$

∴ The enough electricity to power 3000 homes = 220 megawatt

∵ Each turbine gives 3 megawatt

- Find the number of turbines divides the total megawatt by the the

megawatt of one turbine

∴ The number of turbines = 220 ÷ 3 = 73.3

- If we take 73 only the electricity will not be enough to cover all

homes, so we must to take 74 turbines

∴ The number of turbines is 74

5 0

4 years ago