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svet-max [94.6K]
4 years ago
13

Last weekend Mandy collected 4 times as many shells as Cameron. Together they collected 40 shells. How many shells did Mandy col

lect?
Mathematics
1 answer:
TiliK225 [7]4 years ago
5 0
10 because you multiply 10 times 4 which=40

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Statistics... Help!
Leokris [45]

Answer:

a) 0.5233 = 52.33% probability of picking someone who has the disease.

b) 0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

a) What is the probability of picking someone who has the disease.

132 + 25 = 157 people have the disease

132 + 25 + 13 + 130 = 300 people total

157/300 = 0.5233

0.5233 = 52.33% probability of picking someone who has the disease.

b) What is the probability of picking someone who tests negative, given that he/she did not have the disease?

143 people did not have the disease.

130 tested negative. So

130/143 = 0.9091

0.9091 = 90.91% probability of picking someone who tests negative, given that he/she did not have the disease

4 0
3 years ago
To which subset of real numbers does -3 belong?
inessss [21]
<h3>Answer: C) integers and rational numbers</h3>

Explanation:

The set of integers is {..., -3, -2, -1, 0, 1, 2, 3, ...} basically any number that does not have a decimal or fractional part to it. We can say that this set is composed of positive and negative whole numbers along with 0. So this is why -3 is in the set of integers.

The value -3 is not in the set of whole numbers because the set of whole numbers is {0, 1, 2, 3, 4, 5, 6, ...}, so this rules out choice D.

Choice B is also eliminated because -3 is a rational number. We can write -3 as a fraction of two integers, example: -3 = -3/1. Any rational number is not irrational, and vice versa.

Choice A is ruled out because it's not the most complete answer (though its technically true).

8 0
3 years ago
Work out the sum of the interior angles of any quadrilateral
Igoryamba

Answer:

The sum of the interior angles of any quadrilateral is 360°.

8 0
2 years ago
Read 2 more answers
David is filling five-3/4 quart bottles with a sport drink.His measuring cup only hold 1/4 quart.How many times will David need
elena-s [515]
He will need to fill the measuring cup 15 times
3 0
4 years ago
The school has 1600 students but the club members are not sure how many tamales to make one day during lunch the club asked rand
nadezda [96]

300 tamales is what i got

let me know if its wrong

8 0
3 years ago
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