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Akimi4 [234]
2 years ago
12

A researcher is studying whether babies are able to identify a color accurately when given four choices. She wants to build a mo

del that
simulates the results of the study, assuming the baby is guessing and has a 25% chance of choosing the correct color.
Which model could be used to simulate the baby guessing the correct color?
Mathematics
1 answer:
34kurt2 years ago
6 0

Answer:

Spin a spinner divided into four equal sections. Landing on section 1 indicates a correct guess.

Step-by-step explanation:

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Shirley is going to have her home painted. Tim"s painting charges $250 plus $14 per hour. Colorful paints charges $22 per hour.
Advocard [28]

It would take greater than 31.25 hours for Tim's price to be better. So in terms of whole hours it would take at least 32 hours of work for Tim's price to be better.

5 0
2 years ago
A farmer fills his field proportionately with soybeans and corn. Last year he planted 200 acres of corn and 50 acres of soybeans
malfutka [58]

Answer:

Part A)  Is a directly proportional

Part B) The constant of proportionality is k=0.25

Part C) The equation is y=0.25x

Part D) 62.5  acres of soybeans

Step-by-step explanation:

Part A) Are the number of acres of corn and the number of acres of soybeans directly proportional or inversely proportional?

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k

Let

x-----> the number of acres of corn

y---->  the number of acres of soybeans

so

y/x=k  

if the number of acres of corn increases then the number of acres of soybeans increases

if the number of acres of corn decreases then the number of acres of soybeans decreases

therefore

The relationship is a directly proportional

Part B) What is the constant of proportionality?

we have that

For x=200, y=50

substitute

y/x=k

k=50/200

k=0.25

Part C) Let x equal the number of acres of corn and y equal the number of acres of soybeans. Write an equation to show this relationship.

The linear equation that represent the direct variation is equal to

y/x=k

we have

k=0.25

substitute

y/x=0.25

y=0.25x

Part D) How many acres of soybeans can the farmer plant this year if he plants 250 acres of corn?

For x=250

Find the value of y

substitute in the linear equation the value of x and solve for y

y=0.25(250)=62.5 -----> acres of soybeans

7 0
3 years ago
Please help me oh me a lot to me and you get a lot of points I think
Andrei [34K]

Answer:

A. 0.2, 0.25, 0.2

B. the scores are a quarter of the whole

3 0
2 years ago
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If the radius of a circle is 18 yd, then the diameter of the circle is 9 yd.
scZoUnD [109]

Answer:

false radius would be the 9 yds. and diameter would be 18 yds

8 0
3 years ago
HELP QUICK THIS IS DUE IN FIVE MINUTES!!!!!
Komok [63]
2 x (5-2)^3
2 x (3)^3
2 x 27
54
8 0
2 years ago
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