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trasher [3.6K]
3 years ago
14

Grade 5 plz help. Greg has four different coloured cards in a box: yellow,red,blue, and green. He randomly selects one card, rec

ords the color, and then replaces the card in the box. If Greg does this 300 times, how many yellow cards should he expect to select?
Mathematics
1 answer:
Semmy [17]3 years ago
6 0
Greg would get 75 yellow cards
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This is 15 points for whoever answers.
zalisa [80]

Answer:

Y = 40

Step-by-step explanation:

First, find the slope-intercept of the table

Slope-intercept form: y = mx + b

m=\frac{y_2-y_1}{x_2-x_1}

(3, 1) and (6,2)

m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{2-1}{6-3}\\\\m=\frac{1}{3}

y=mx+b

y=\frac{1}{3}x+b

Find b using (6,2):

y=\frac{1}{3}x+b\\\\2=\frac{1}{3}(6)+b\\\\2=\frac{6}{3}+b\\\\2=2+b\\\\-2\ -2\\\\0=b

y=\frac{1}{3}x+b== > y=\frac{1}{3}x+0== > y=\frac{1}{3}x

y=\frac{1}{3}x

What will be the value of Y when X = 120?

Substitute 120 for x into y=\frac{1}{3}x

y=\frac{1}{3}x\\\\y=\frac{1}{3}(120)\\\\y=\frac{120}{3}\\\\y=40

(120, 40)

Therefore, when X = 120, Y = 40

Hope this helps!

7 0
2 years ago
PLEASE PLEASE HELP IVE BEEN STUCK ON THIS FOR TOO LONG
stellarik [79]

Answer:

10

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
2. Chaleah deposited 700$ in a new account that earns 5% simple interest. After 4 years,
Oxana [17]

Answer:

Interest earned: $150.85

Total amount: $850.86

Step-by-step explanation:

Y=700(1.05)^4

Put the right side of the equation into a calculator and get

850.85 that's your total, so to get the amount earned subtract the original 700 from it and get 150.85

5 0
3 years ago
The probability of obtaining nine heads in a row when flipping a coin is
Gelneren [198K]
Answer: The probability is about 0.2%.

The probability of flipping heads one time is 0.5, 50% or 1/2.

To flip heads 9 times in a row, we have to multiply 1/2 by itself 9 times.

(1/2)^9 = 1/512 or about 0.2%

It should only happen once every 512 times.
7 0
3 years ago
The sum of two numbers is 56. The smaller number is 12 less than the larger number. What are the numbers?
Serga [27]
56/2 = 28 + 28

28 + 6 = 34
28 - 6 = 22

34 + 22 = 56

34 - 22 = 12


Your numbers are 34 and 22
6 0
3 years ago
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