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3 years ago

Three electrical appliances each have power ratings of

Mathematics

2 answers:

Natasha_Volkova [10]3 years ago

7 0

30+8/5=31.6 you have to break the whole question down to get the answer.

olga55 [171]3 years ago

7 0

3 x 1 7/8 = 5 5/8
2 x 4 3/4 = 9 1/2

5 5/8 + 9 1/2
= 5 5/8 + 9 4/8
= 14 9/8
= 15 1/8

The answer is 15 1/8 watts

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1.3.2 - Harry has a 14 foot pole. He cuts off 4 1/2 feet of it and then cuts off

Evgen [1.6K]

Answer:

9.31 is what I got

So 9.31 feet

Step-by-step explanation:

8 0

2 years ago

9mph in still water it takes 5hrs longer to travel 74 miles upstream than downstream find the rate of current and round to neare

prohojiy [21]

Answer:

The rate of current is 2.5 mph.

Step-by-step explanation:

The speed in the water when current is absent is 9 mph.

If the speed of the current is v mph then the upstream speed is (9 - v) mph and the downstream speed is (9 + v) mph.

Now, it takes 5 hours longer to travel 74 miles upstream than down stream, then we can write the equation as

$\frac{74}{9 - v} - \frac{74}{9 + v} = 5$

⇒ $\frac{2v}{81 - v^{2} } = \frac{5}{74}$

⇒ 148v = 405 - 5v²

⇒ 5v² + 148v - 405 = 0

Applying Sridhar Acharya's formula we can write

$v = \frac{-148 + \sqrt{148^{2} - 4(5)(-405) } }{2(5)}$ (Neglecting the negative root)

⇒ $v = \frac{- 148 + 173.2166}{10} = 2.5$ mph (Rounded to the nearest 10th) (Answer)

7 0

3 years ago

Use the table to locate the location with the greatest amount of rain and the location with the least amount of rain. What is th

Alisiya [41]

Answer:

can you show us the table?

Step-by-step explanation:

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2 years ago

C-28 how do you solve this problem

Jobisdone [24]

Answer:

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2 years ago

What property is (3x5)x2=5x(2x3)

Anettt [7]

(3x5)X2=5x(2x3)
15x2=5x6
30=30

7 0

3 years ago