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frez [133]
3 years ago
11

I NEED HELP PLEASE ASAP! :)

Mathematics
1 answer:
SOVA2 [1]3 years ago
4 0

Exact answer as a fraction = 1/3

Approximate answer in decimal form = 0.333

Approximate answer as a percentage = 33.3%

=====================================================

Explanation:

Check out the attached image below. It shows the various dice sums that add to either 4, 5 or 6. We have 12 occurrences total out of 6*6 = 36 overall giving 12/36 = 1/3 as the probability. This is in fraction form. As a decimal, 1/3 = 0.333 approximately which covers over to 33.3%

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Write the inverse of the function: f (x) = 2x+3
34kurt

Answer:

y = \frac{x - 3}{2}

Step-by-step explanation:

To find the inverse of a function, simply 'switch' the x and y's and solve for y. y = 2x + 3 becomes x = 2y + 3. Now, solving for y, we get y = \frac{x - 3}{2}.

hope this helped! :)

6 0
2 years ago
In a class of 30 students (x+10) study algebra, (10x+3) study statistics, 4 study both algebra and statistics. 2x study only alg
Vladimir [108]

Answer:

1. The Venn diagrams are attached

2. When the statistics students number = 10·x + 3, we have;

The number of students that study

a. Algebra = 128/11

b. Statistic = 213/11

When the statistics students number = 2·x + 3, we have;

The number of students that study

a. Algebra = 16

b. Statistic = 15

Step-by-step explanation:

The parameters given are;

Total number of students = 30

Number of students that study algebra n(A) = x + 10

Number of students that study statistics n(B) = 10·x + 3

Number of student that study both algebra and statistics n(A∩B) = 4

Number of student that study only algebra n(A\B) = 2·x

Number of students that study neither algebra or statistics n(A∪B)' = 3

Therefore;

The number of students that study either algebra or statistics = n(A∪B)

From set theory we have;

n(A∪B) = n(A) + n(B) - n(A∩B)

n(A∪B) = 30 - 3 = 27

Therefore, we have;

n(A∪B) = x + 10 + 10·x + 3 - 4 = 27

11·x+13 = 27 + 4 = 31

11·x = 18

x = 18/11

The number of students that study

a. Algebra

n(A) = 18/11 + 10 = 128/11

b. Statistic

n(B) = 213/11

Hence, we have;

n(A - B) = n(A) - n(A∩B) = 128/11 - 4 = 84/11

Similarly, we have;

n(B - A) = n(B) - n(A∩B) = 213/11 - 4 = 169/11

However, assuming n(B) = (2·x + 3), we have;

n(A∪B) = n(A) + n(B) - n(A∩B)

n(A∪B) = 30 - 3 = 27

Therefore, we have;

n(A∪B) = x + 10 + 2·x + 3 - 4 = 27

2·x+3 + x + 10= 27 + 4 = 31

3·x = 18

x = 6

Therefore, the number of students that study

a. Algebra

n(A) = 16

b. Statistics

n(B) = 15

Hence, we have;

n(A - B) = n(A) - n(A∩B) = 16 - 4 = 12

Similarly, we have;

n(B - A) = n(B) - n(A∩B) = 15 - 4 = 11

The Venn diagrams can be presented as follows;

6 0
3 years ago
Is 2/5 equivalent to 0.25
notsponge [240]
No it isn't because 2/5=0.4 

3 0
3 years ago
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Please hw due at 4:55 help
stiv31 [10]
The answer is c. Thank you
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3 years ago
Mr. Lee bought rock to landscape around his house. He bought seven ton of rock for $151.13. How much did the rock cost per ton?
Mazyrski [523]

Answer:

A. $21.59

Step-by-step explanation:

$151.13 ÷ 7 tons= $21.59 each per ton

8 0
3 years ago
Read 2 more answers
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