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olga55 [171]
3 years ago
13

Which options could be the next step in simplifying this expression?   (18 + 23) + 7   Choose exactly two answers that are corre

ct.   A. 41 + 7 (use order of operations)   B. 30 + 25 (use the commutative property)   C. 18 + 30 (use the associative property)   D. 25 + 30 (use the distributive property)
Mathematics
1 answer:
Kazeer [188]3 years ago
4 0
A is the correct answer
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Someone who actually knows what they doing please ‍♀️
mariarad [96]

Answer:

5/9 (F-32) = 25

Step-by-step explanation:

5/9 (F-32) = C

Multiply each side by 9/5

5/9 * 9/5 (F-32) =9/5 C

F -32 = 9/5 C

Add 32

F -32 +32 = 9/5 C +32

F = 9/5 C +32

We want 25 C to Fahrenheit

F = 9/5 *25 +32

F = 9*5 +32

F = 45+32

F = 77

5 0
3 years ago
Which of the following place value tables shows 40,833?
jolli1 [7]

40,833 has...

4 Ten Thousands

8 Hundreds

3 Tens

3 Ones

6 0
3 years ago
Please answer this correctly
LekaFEV [45]

Answer:

Mean

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
HELP ME PLS<br> Which of these figures has rotational symmetry?
Vlada [557]

Answer:

A

Step-by-step explanation:

When you rotate the shape it will be the same as it was before .

3 0
3 years ago
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Bad gums may mean a bad heart. Researchers discovered that 82% of people who have suffered a heart attack had periodontal diseas
saveliy_v [14]

Answer:

37.27% probability that he or she will have a heart attack.

Step-by-step explanation:

Bayes Theorem:

Two events, A and B.

P(B|A) = \frac{P(B)*P(A|B)}{P(A)}

In which P(B|A) is the probability of B happening when A has happened and P(A|B) is the probability of A happening when B has happened.

In this question:

Event A: Periodontal disease

Event B: Heart attack

Researchers discovered that 82% of people who have suffered a heart attack had periodontal disease, an inflammation of the gums.

This means that P(A|B) = 0.82

Only 33% of healthy people have this disease.

This means that P(A) = 0.33

Suppose that in a certain community heart attacks are quite rare, occurring with only 15% probability.

This means that P(B) = 0.15

If someone has periodontal disease, what is the probability that he or she will have a heart attack

P(B|A) = \frac{0.15*0.82}{0.33} = 0.3727

37.27% probability that he or she will have a heart attack.

6 0
3 years ago
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