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melomori [17]
3 years ago
5

A teacher surveys a sample of students from Lake Middle School. He asks the students where they’d like to go for a field trip. H

e records these results: 80 choose the aquarium. 60 choose the science center. 30 choose the planetarium. 40 choose the farm. The teacher wants to figure out the relative frequency of a student choosing the aquarium. He will then estimate how many students out of all 1000 at the school are likely to choose the aquarium. Answer the questions to solve the problem. 1. How many students did the teacher survey? Write your answer in the space below. 2. What is the relative frequency of a student choosing the aquarium? Give your answer as a decimal rounded to the nearest hundredth. Show your work. Write your answer in the space below. 3. Suppose the teacher surveys one student at random. Based on the survey results, what is the estimated probability that the student chooses the aquarium? Write your answer in the space below. 4) Write and solve a proportion that the teacher can use to estimate how many students in the whole school would choose the aquarium. Show your work. Write your answer in the space below.
Mathematics
1 answer:
monitta3 years ago
6 0

Answer:

https://brainly.in/question/30560329

Step-by-step explanation:

Those are the answers I found on brainly

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7nadin3 [17]

Answer:

7x+y>18

Step-by-step explanation:

7x is 7 dollars times the amount of burritos

y is 1 dollar times the amount of tacos

> because the final price has to be more than the gift card

18 the money on the gift card

7 0
3 years ago
Josh invested $12,000 in mutual funds and received a sum of $20,000 at the end of the investment period. Calculate the ROI.
tresset_1 [31]

Answer:

ROI = 66.67%

Step-by-step explanation:

Given:

josh investment= $12,000

Received sum= $20,000

ROI=?

ROI is the return on investment that gives the loss or gain in any investment and is calculated by the following formula:

ROI= (interest/investment) x 100

Finding interest:

interests= received sum- investment

              = 20,000-12,000

              =8000

Putting values in ROI formula we get:

ROI= (8000/12000) x 100

      = 66.67%

Hence the return on investment is 66.67%!

3 0
3 years ago
Find the points of Intersection of these graphs
geniusboy [140]

Answer:

the line crosses the parabola at (-2,4) and (3,9)

Step-by-step explanation:

y=x^2

y=x+6

set them equal to each other

x^2=x+6, now set it equal to zero

x^2-x-6=0, now find the root

(x+2)(x-3)=0, the x=-2, and x=3; now substitute into any of the equation to find the points where graphs intercept

at x= -2, y=(-2)^2=4, so one point is (-2,4)

at x=3, y=(3)^2=9, so other point is (3,9)

the line crosses the parabola at (-2,4) and (3,9)

8 0
3 years ago
Help Please<br><br><br> thats my image
Alenkasestr [34]

Answer:

\frac{5}{6}

Step-by-step explanation:

The total number of squares is 36, and only 6 of them are shaded therefore, the remaining 30 are not shaded. The probability that a randomly selected square is not shaded would therefore be:

\frac{30}{36}  =  \frac{10}{12}  \\ =   \frac{5}{6}

3 0
1 year ago
Read 2 more answers
Work out the value of (2^3)^2​
aniked [119]

Answer:

2^6

64

Step-by-step explanation:

7 0
3 years ago
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