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Mkey [24]
3 years ago
8

Greg has four different colored cards in a box. Yellow, red, blue, and green. He randomly selects one card, records the color, a

nd then replaces the card into the box. If Greg does this 300 times, how many yellow cards should he expect to select?
Mathematics
1 answer:
Veronika [31]3 years ago
6 0

Answer:

He should expect to select 75 yellow cards.

Step-by-step explanation:

Since there is replacement, for each trial, we have:

1 yellow card

1 red card

1 blue card

1 green card.

If Greg does this 300 times, how many yellow cards should he expect to select?

Each trial, there are 4 cards, one of which is yellow. So 1/4 = 0.25 probability of selecting a yellow card.

Over 300 trials

0.25*300 = 75

He should expect to select 75 yellow cards.

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Here are some prices customers paid for different items at a farmer’s market. Find the cost for 1 pound of each item.
posledela

Answer:

  • 1 pounds of apples = \1·25
  • 1 pounds of cheese = \7
  • 1 pounds of coffee beans = \5·5
  • 1 pounds of fudge = \9
  • 1 pounds of pumpkin = \0·88

Step-by-step explanation:

Unit Rate is the ratio between two different quantities with different units

The ratio of cost per items is

=  \frac{dollars}{pounds}

4 pounds of apples  = \5

4 pounds = \5

Divided 4 both the side

1 pounds of apples = \1·25

\frac{1}{2} pounds of cheese = \3·50

\frac{1}{2} pounds = \3·50

Divided \frac{1}{2} both the side

1 pounds of cheese = \7

\frac{3}{2} pounds of coffe beans = \8·25

\frac{3}{2} pounds = \8·25

Divided \frac{3}{2} both the side

1 pounds of coffee beans = \5·5

\frac{3}{4} pounds of fudge = \6·75

\frac{3}{4} pounds = \6·75

Divided \frac{3}{4} both the side

1 pounds of fudge = \9

\frac{25}{4} pounds of pumpkin is = \5·50

\frac{25}{4} pounds = \5·50

Divided \frac{25}{4} both the side

1 pounds of pumpkin = \0·88

8 0
3 years ago
What is the answer to 10g=4/6
Yanka [14]
10g = 4/6....divide both sides by 10
g = (4/6) / 10
g = 4/6 * 1/10
g = 4/60 which reduces to 1/15 <==
5 0
3 years ago
Read 2 more answers
What is f–1(8)??<br><br> Please select the best answer
notka56 [123]

Answer:

f^{-1}(8)=\frac{3}{2}

Step-by-step explanation:

Given f(x)=2x+5

We have to find f^{-1}(8)

In order to find f^{-1}(x) we have to make x as the subject of the formula

Let us assume f(x)=y

⇒2x+5=y

Subtracting both sides by 5

2x+5-5=y-5

2x=y-5

Dividing both sides by 2

\frac{2x}{2}=\frac{y-5}{2}

⇒x=\frac{y-5}{2}

Now substituting y with x

we have f^{-1}(x)=\frac{x-5}{2}

Now f^{-1}(8)=\frac{8-5}{2}

=\frac{3}{2}

So option (ii) is correct


5 0
2 years ago
Read 2 more answers
Which of the following numbers are written correctly in expanded form? Select TWO that apply.
ivolga24 [154]

Answer:

C is correct, D might be correct if you forgot 000 at the end of the question.

Step-by-step explanation:

005  = 5x1  so A is incorrect

945 = 9x100 +  4x10 +   5x1 so B is incorrect

15.859 = 1x10 +  5x1 +  8/10 +  5/100 +  9/1000 +  so C is correct

973.001 = 9x100 + 7x10 + 2x1 + 1/1000 so D is incorrect

3 0
2 years ago
4x-3&gt;12x+4<br>Need help solving.
Vika [28.1K]
-3 - 4 > 12 x - 4x

-7 > 8x

-7/8 > x

x < -7/8
4 0
3 years ago
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