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nikitadnepr [17]
3 years ago
6

A local blood drive predicts 40% of its donors will have Type O blood.Which simulation could be used to model the number of dono

rs will have Type O blood?......................
A.) spin two spinners with 6 equal sections......................:::......::::::............B.) Draw one marble from a bag containing 4 white marbles and 10 purple marbles...................................C.)Flip a coin and roll a die 4 times.............D.)Select one card from a set containing 4 red cards and 6 black cards
Mathematics
1 answer:
Sati [7]3 years ago
4 0
The answer is D because 4+6 equals 10 or 100% and 40% are o blood so 60% are not
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The equation that you must use is y=15x+15
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8 0
3 years ago
Evaluate the exponent expression 3x–4 ⋅ xy2 for x = –1 and y = 2.
ddd [48]

Answer:

48

Step-by-step explanation:

Given,

x = - 1

y = 2

To find : The value of 3x - 4 ⋅ xy² ?

Substitute the given values of x and y in the expression 3x - 4 ⋅ xy².

3x - 4 ⋅ xy²

= 3 ( - 1 ) - 4 ⋅ ( - 1 ) ( 2 )²

= - 3 - 4 ⋅ - 1 ( 4 )

= - 12 ⋅ - 4

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Note : -

When a negative number gets multiplied with a negative, the resulted number is a positive number.

8 0
3 years ago
What is the median for the set of data 3.5 1 3 4​
yawa3891 [41]

Answer:

3.5

Step-by-step explanation:

Test Scores

1, 1, 2, 3, 3, 4, 4, 5, 5, 5

median(middle #)

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6 0
3 years ago
Read 2 more answers
Two years ago, Rita was three times older than Cheryl. In 3 years, Rita will be twice older than Cheryl. How old are the girls n
Brrunno [24]

Answer:

Cheryl's age = x = 7 years

Rita's age = y = 17 years

Step-by-step explanation:

Let

Cheryl's age = x

Rita's age = y

Two years ago, Rita was three times older than Cheryl

(y - 2) = 3(x - 2)

y - 2 = 3x - 6

y = 3x - 6 + 2

= 3x - 4

y = 3x - 4

In 3 years, Rita will be twice older than Cheryl

(y + 3) = 2(x + 3)

y + 3 = 2x + 6

y = 2x + 6 - 3

= 2x + 3

y = 2x + 3

Equate both equations

3x - 4 = 2x + 3

Collect like terms

3x - 2x = 3 + 4

x = 7 years

Substitute x = 7 into

y = 2x + 3

= 2(7) + 3

= 14 + 3

= 17

y = 17 years

Cheryl's age = x = 7 years

Rita's age = y = 17 years

5 0
3 years ago
Halle had 15 pounds of sand to give to 6 of her friends for an art project. How many pounds of sand did each friend receive if H
zubka84 [21]
Each friend received 2 1/2 pounds of sand
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3 years ago
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