2 years ago

I don't understand this at all

Mathematics

1 answer:

Alecsey [184]2 years ago

7 0

Pretty sure what the question means idrk sorry

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What is all of the factors of 13

Yuri [45]

There are only 1 and 13 bc it is a prime number

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2 years ago

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Daniel had $57 to spend on gifts he spent $10.51 on a gift for Isaac $8.73 on a gift for madison and $8.47 on a gift for Abigail

mina [271]

57-10.51=46.49
46.49-8.73=37.76
37.76-8.47=29.29
Therefore Daniel has $29.29 left.

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3 years ago

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If ADAB ACBA,<br> ZD = 132° and ZC = x + 18

d1i1m1o1n [39]

Answer:

x = 114

Step-by-step explanation:

since the triangles are congruent then corresponding angles are congruent, then

∠ C = ∠ D , that is

x + 18 = 132 ( subtract 18 from both sides )

x = 114

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2 years ago

What is 6 1/3 - 4 2/3 = ?

kenny6666 [7]

Answer:

3 1/4 + 2 1/3 = 67 / 12 = 57 1/2

Step-by-step explanation:

Conversion a mixed number to a improper fraction: 3 1/4 = 3 · 4 + 1

= 13

Conversion a mixed number to a improper fraction: 2 1/3 = 2 · 3 + 1

= 7

Add: 13

+ 7

= 13 · 3

4 · 3

+ 7 · 4

3 · 4

= 39

+ 28

= 39 + 28

= 67

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3 years ago

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g Disco Fever is randomly found in one half of one percent of the general population. Testing a swatch of clothing for the prese

Marizza181 [45]

Answer:

The probability that the result is positive is P=0.04475=4.475%.

Step-by-step explanation:

We have the events:

D: disease present

ND: disease not present

P: test positive

F: test false

Then, the information we have is:

P(D)=0.005

P(P | D)=0.99

P(P | ND)=0.04

The total amount of positive test are the sum of the positive when the disease is present and the false positives (positive tests when the disease is not present).

$P(P)=P(P | D)*P(D)+P(P | ND)*(1-P(D))\\\\P(P)=0.99*0.005+0.04*0.995\\\\P(P)=0.00495+0.0398=0.04475$

The probability that the result is positive is P=0.04475.

5 0

4 years ago