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3 years ago

The probability of drawing jacks from a deck of cards in ten different trials where cards are replaced after each trial

1 answer:

4 0

Sample space={52 cards} = All possible outcomes
Favorable event {4 Jacks}
Important info: CARD is replaced after each trial

P(drawing Jack) = 4/52 = 1/13 = 0.0769
It will always be 0.0769 whatever the number of trials

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Math, please help! Picking Brainliest.

arsen [322]

B. They are similar triangles, and so the hypotenuses of the two triangles will be different sizes of the same line.

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3 years ago

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Insturctions to care for a plant say to water it with 3/4 cup of water every day.The plant has been getting 25% too much water.

disa [49]

For this case we propose a rule of three. We assume that the excess water received was in one day. So:

$\frac {3} {4}$ cup ------> 100%

x ----------------------------> 25%

Where "x" represents excess water.

$x = \frac {25 * \frac {3} {4}} {100}\\x = \frac {\frac {75} {4}} {100}\\x = \frac {75} {400}\\x = \frac {15} {80}\\x = \frac {3} {16}$

Thus, the excess water is $\frac {3} {16}$ cups.

Then, in one day you receive in total:

$\frac {3} {4} + \frac {3} {16} = \frac {16 * 3 + 4 * 3} {16 * 4} = \frac {48 + 12} {64} = \frac {60 } {64} = \frac {15} {4}$ cups of water.

Answer:

$\frac {15} {4}$ cups of water

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3 years ago

Marquetta makes necklaces. Her cost for materials is $4.50 per necklace. She charges that plus a 64% markup. How much does Marqu

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Step-by-step explanation:

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3 years ago

What is 3-2x>-5 in an inequality form

Annette [7]

Answer:

$\displaystyle 4 > x$

Step-by-step explanation:

3 - 2x > −5

- 3 - 3

_________

$\displaystyle \frac{-2x}{-2} > \frac{-8}{-2} \\ \\ x < 4$

Whenever you divide\multiply by a negative, you reverse the inequality symbol.

** The above answer is written in reverse, which is the exact same result.

I am joyous to assist you anytime.

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3 years ago

Given a system of linear equations; explain your strategy for solving the system, show the math required to solve the problem, a

labwork [276]

The solution is (x, y) = (2, 3)

<em><u>Solution:</u></em>

<em><u>Given equations are:</u></em>

y = 3x - 3 ------- eqn 1

y = 2x - 1 ---------- eqn 2

We can solve the equations by substitution method

In eqn 1, we have y equals 3x - 3

If we substitute this in place of y in eqn 2, we can get value of "x"

Substitute eqn 1 in eqn 2

3x - 3 = 2x - 1

Move the variables to one side and constants to other side

3x - 2x = -1 + 3

Substitute x = 2 in eqn 1

y = 3(2) - 3

y = 6 - 3

Thus the solution is (x, y) = (2, 3)

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4 years ago