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3 years ago

12

When sandra walk through the house she saw that 18 lights are on and only one third of the lights were off how many lights were

off?

1 answer:

vovangra [49]3 years ago

4 0

Don't mind the length I used. It's just so you understand the answer clearly. Once you know how to do it, you will be able to do it in seconds.

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como calcular la cantidad de horas por proyecto si un contratista tiene 5,000 horas-hombres y el costo es de $10 y $12 por proye

Tju [1.3M]

Answer:

Each project has 2.500 man-hours

Step-by-step explanation:

Available man hours: 5000

For two projects Costs $

X: project A 10

Y: project B 12

Approach:

X + Y = 5000 => X = 5000 - Y

10 * X + 12 * Y = 55000

replacing:

10 * (5000 - Y) + 12 * Y = 55000

50000 - 10 * Y + 12 * Y = 55000

2 * Y = 55000 - 50000

Y = 5000/2

Y = 2500

For X:

X = 5000 - 2500

X = 2500

The number of hours available for each project are:

Projects Man hours

X: project A 2500

Y: project B 2500

6 0

3 years ago

Sam and Paul started a business. Their investments were in the ratio 6 : 7, respectively. How much did Paul invest if Sam's inve

salantis [7]

Answer:

$966

Step-by-step explanation:

6/7 = 828/x

Write a proportion.

6x = 7(828) Use cross products.

6x = 5796 Multiply.

x = 966 Divide both sides by 6.

Paul's investment was $966.

4 0

2 years ago

What is the degree measure of arc UTR

Paladinen [302]

Answer:

212°

Step-by-step explanation:

arc UTR = 180+32 = 212°

3 0

3 years ago

Each square on the grid represents 1 ft². What is the approximate area of this patch of grass? A. about 35 ft² B. about 40 ft² C

larisa [96]

A. about 35 ft I hope this helps you

5 0

3 years ago

Read 2 more answers

Desiree created a website with separate pages for videos, games, photos and poems. She made the table below to

dusya [7]

Answer: 3 to 2

Step-by-step explanation:

You simplify the ratio :)

3 0

3 years ago