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3 years ago

It’s a test!!! I only have 20 minutes left!!! Please help me!!!

Mathematics

1 answer:

Wewaii [24]3 years ago

8 0

Answer:it would be 5.5.

Step-by-step explanation:

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Round 275,608 to the nearest thousand

Lilit [14]

The answer is 276,000.

Hope that helps :]

4 0

3 years ago

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Consider an experiment with a deck of 52 playing cards, in which there are 13 cards in each suit, two suits are black, and two s

lakkis [162]

Answer:

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Number of playing cards = 52

Number of suits = 4

Number of cards per suit = 13

Number of black suits = 2

Number of red suits = 2

2. Suppose E1 = the outcome is a red card and E2 = the outcome is a face card (K, Q, J). Determine P(E1 or E2).

P (E1) = Number of red cards/Total of playing cards

P (E1) = 26/52 = 1/2 = 50%

P (E2) = Number of face cards/Total of playing cards

P (E2) = 12/52 = 3/13 = 23%

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3 years ago

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Miss Angelino made 2 pans of lasagna and cut each pan into twelfths. Her family ate 1 1/12 pans of lasagna for dinner. How many

Jlenok [28]

1/2 because, if you have a total of 2 and you take away (or subtract in other words) 1 1/2 which is what they ate you get 1/2.

2= 2/1+ 4/2
4/2-1/2=1/2

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3 years ago

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0.21212121... as a fraction

Romashka [77]

Answer : 21212121/ 100000000

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3 years ago

17) Solve the system as matrix equations using inverses. 17) A company produces three models of MP3 players, models A, B, and C.

Vinvika [58]

Answer:

Model A=30, Model B: 20, Model C: 45

Step-by-step explanation:

Let x be the amount of type A mp3 produced, and the amount of model B mp3's produced and z the amount of model C mp3 produced.

Since in total there are 303 hours for electronics work, then:

$3.2x+5.4y+2.2z=303$

Since in total there are 393 hours for assembly, then:

$2.8x+2.4y+5.8z=393$

Since in total there are 416 hours for quality assurance, then:

$4.4x+3.4y+4.8z=416$

Then, the linear system associated to the problem is

$3.2x+5.4y+2.2z=303\\2.8x+2.4y+5.8z=393\\4.4x+3.4y+4.8z=416$

with coefficient matrix $A=\left[\begin{array}{ccc}3.2&5.4&2.2\\2.8&2.4&5.8\\4.4&3.4&4.8\end{array}\right]$ and vector of constant terms $b=\left[\begin{array}{ccc}303\\393\\416\end{array}\right]$