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pashok25 [27]
3 years ago
7

One card is randomly selected from a deck of cards. Find the odds: in favor of getting a spade.

Mathematics
2 answers:
n200080 [17]3 years ago
6 0

Answer:

1/4

Step-by-step explanation:

In a deck of cards, there are 52 cards (not including jokers)

and there are 13 cards that are spades, so it's simply just 13/52 which simplifies to 1/4

Monica [59]3 years ago
3 0

Answer:

1/4 chance or 0.25 or 25%

Step-by-step explanation:

One forth of cards in a deck are spades

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Ben says that n=5 is the solution of the equation 7n=45. How can you check whether Ben is correct?
GalinKa [24]

Answer:

Its not. 45 would have to be 35 for n to be 5.

Step-by-step explanation:

7(5)=45

3 0
3 years ago
Multiply. Write your answer as a fraction in simplest form 9/10 x 2/3
Oduvanchick [21]

Answer:

3/5

Step-by-step explanation:

9/10 and 2/3 can cross cancel

3 goes into 9, 3 times

2 goes into 10, 5 times

they both go into themselves once

our new fractions are 3/5 and 1/1 which equals 3/5

8 0
3 years ago
Read 2 more answers
Solve the equation 7/z-1 = 9/z+4
algol [13]

Answer:

z is equal to 18.5

Step-by-step explanation:

When an equation is in the format a/b = c/d, the quickest way to simplify it is to cross multiply.  Each side is multiplied by the other sides denominator, eliminating the division:

\frac{7}{z-1} = \frac{9}{z + 4}\\7(z + 4) = 9(z - 1)\\7z + 28 = 9z - 9\\7z - 9z = -9 - 28\\-2z = -37\\z = 37/2\\z = 18.5

So z is equal to 18.5

3 0
3 years ago
What is Pi dumbed down?
Delvig [45]

Answer:

Dumbing down is the deliberate oversimplification of intellectual content in education, literature, and cinema, news, video games and culture.

3 0
3 years ago
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A marketing representative wants to estimate the proportion of people in a state who like the new design on the packaging of a c
Effectus [21]

Answer:

The correct option is;

(B) Yes, because sampling distributions of population proportions are modeled with a normal model.

Step-by-step explanation:

Here we have the condition for normality being that where we have a population with a given mean and standard deviation, while a sufficiently large sample is drawn from the population while being replaced, the distribution of the sample mean p will be distributed normally according to central limit theorem.

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3 years ago
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