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3 years ago

15 bottles of foundation

Mathematics

1 answer:

aivan3 [116]3 years ago

4 0

Answer:

147 bottles

Step-by-step explanation:

each day is an increment of 3 bottles day 10 was 42 bottles

day 20 was 72

safe to assume every 10 days is 30 bottles sold so day 30 is 102 and day 40 is 132 bottles

then add 3 for the remaining 5 days

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The pet store has 8790 clownfish. they keep 6 fish in one tank . how many tanks do they have?

Gnoma [55]

Answer:

8790 / 6=1465

Step-by-step explanation:

From this question we know that there are a total of 8790 fish, with 6 of them being kept in one tank, and we want to know how many tanks there are. So we do 8790 / 6 which gives us 1465.

8 0

3 years ago

According to the document Current Population Survey, published by the U.S. Census Bureau, 30.4% of U.S. adults 25 years old or o

Marizza181 [45]

Answer:

0.0803 = 8.03% probability that the number who have a high school degree as their highest educational level is exactly 32.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they have a high school degree as their highest educational level, or they do not. The probability of an adult having it is independent of any other adult. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

30.4% of U.S. adults 25 years old or older have a high school degree as their highest educational level.

This means that $p = 0.304$

100 such adults

This means that $n = 100$

Determine the probability that the number who have a high school degree as their highest educational level is a. Exactly 32

This is P(X = 32).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 32) = C_{100,32}.(0.304)^{32}.(0.696)^{68} = 0.0803$

0.0803 = 8.03% probability that the number who have a high school degree as their highest educational level is exactly 32.

7 0

3 years ago

The sum of 2 numbers is 55 and the difference is 1. what are the numbers

Scrat [10]

First no. = x
Second no. = y

Equation Formation
x + y = 55..........equation (i)
x - y = 1..............equation (i)

x = 1+y

1 + y + y = 55
1 + 2 y = 55
2 y = 55-1
2 y = 54
y = 27

x=27 + 1
x =28

Answer = 28 , 27

7 0

3 years ago

Write the equation of the line that passes through the points (-9,2) and (-2,8).

tresset_1 [31]

Answer:

y = 6/7x + 68/7

Step-by-step explanation:

5 0

3 years ago

Area of a Square

Slav-nsk [51]

The description of the area of a square is (c) as the length of the side increases, the area increases.

<h3>How to describe the area of a square?</h3>

The table of values is given as:

<u>Side Length (cm) Area (cm²)</u>

1 1

2 4

3 9

4 16

5 25

In the above table, we can see that:

As length increases, the area also increases

Hence, the description of the area is (c) as the length of the side increases, the area increases.