3 years ago

What is the probability of picking the Ace of Spades or the Jack of Diamonds?

Mathematics

1 answer:

kow [346]3 years ago

4 0

1/52 because theres 52 cares in a deck

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a garden table and a bench cost 806 combined. The garden table costs 44 less than the bench What is the cost of the bench?

Alexandra [31]

806 - 44 = 762.
762 divided by 2 = 381.
381 + 44 = 425. Hope it helps! :)

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4 years ago

how much mg of a metal containing 4% silver must be combined with 11 mg of a metal containing 38% silver to form an alloy contai

Eddi Din [679]

Answer:

6 mg of the metal needs to be added.

Step-by-step explanation:

Let the amount (in mg) of metal that needs to be added by y.

Therefore, the amount of silver in the above metal is 0.04y.

Prior to mixing, 11 mg of a metal contained 38% of silver (Given).

Therefore, the amount of silver before= $\frac{38}{100}*11$ = 4.18 mg

The total amount of silver after mixing, 4.18 + 0.04y mg

The total amount of metal after mixing, 11 + y mg

New percentage of silver = 26% .

Thus, $\frac{4.18+0.04y}{11+y}*100= 26$

$(4.18 +0.04 y) * 100 = 26 *(11 +y)$

$418+4y=286+26y$

$132=22y$

y=6 mg

Therefore, the amount of metal that needs to be added is 6 mg.

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3 years ago

A PS4 uses 8.8 watts in stand by mode. How much electricity would be used if you have the PS4 on stand by for 12 hours a day for

noname [10]

The total number of hours on stand by is 12 x 3 x 7 = 252 hrs.
The energy used would be (252 x 8.8)/1000 = 2.22 kW-hours.

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4 years ago

Slove step-by-step (5+4)×2+6-(2×2)-1

Sladkaya [172]

1. (5 + 4) x 2 + 6 - (2 x 2) - 1
2. 9 x 2 + 6 - 4 - 1
3. 18 + 6 - 4 - 1
4. 24 - 4 - 1
5. 20 - 1
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3 years ago

What is 6 multiplied by 7

ELEN [110]

Answer:

Hope this helps ;)

Step-by-step explanation:

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3 years ago

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