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Lelechka [254]
3 years ago
14

Godel is asked to perform the addition problem below. Godel believes that because there are more negative numbers, the answer wi

ll be negative. Part a: Explain if his reasoning is correct.Part b :Solve -7+12-3+9+(-5)
Mathematics
1 answer:
dem82 [27]3 years ago
6 0

Answer:

-7+12-3+9+(-5)=6

Godbel is wrong in the reasoning as the answer does not depend on the number of negative numbers in the expression. Instead it depends on the value of the sum of positive terms and the value of the sum of negative terms. If the values of sum of positive terms is greater than the value of the sum of negative terms then the answer will be a positive and vice versa.

Step-by-step explanation:

Given expression:

-7+12-3+9+(-5)

To evaluate the expression.

Solution:

We have: -7+12-3+9+(-5)

Removing parenthesis first as a positive and negative multiply to give a negative.

⇒ -7+12-3+9-5

Then we can group the positives and negatives together.

⇒ 12+9-7-3-5

⇒ 21-7-3-5

Since the negatives combine by getting added up with the sum being negative, so we have:

⇒ 21-15

As, we can see the positive value (21) is greater than the negative value  (15) and hence the answer would be a positive.

⇒ 6

Godbel is wrong in the reasoning as the answer does not depend on the number of negative numbers in the expression. Instead it depends on the value of the sum of positive terms and the value of the sum of negative terms. If the values of sum of positive terms is greater than the value of the sum of negative terms then the answer will be a positive and vice versa.

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garik1379 [7]

Answer:

9 pack

Step-by-step explanation:

11.49/4=$2.87 per ball

16.70/6=$2.78 per ball

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4 0
3 years ago
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United Blood Services is a blood bank that serves more than 500 hospitals in 18 states. According to their website, a person wit
Anna11 [10]

Answer:

a) 0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b) 0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

Step-by-step explanation:

I am going to solve this question treating these events as Venn probabilities.

I am going to say that:

Event A: Person has type A blood.

Event B: Person has Rh- factor.

43% of people have type O blood

This means that P(A) = 0.43

15% of people have Rh- factor

This means that P(B) = 0.15

52% of people have type O or Rh- factor.

This means that P(A \cup B) = 0.52

a. Find the probability that a person has both type O blood and the Rh- factor.

This is

P(A \cap B) = P(A) + P(B) - P(A \cup B)

With what we have

P(A \cap B) = 0.43 + 0.15 - 0.52 = 0.06

0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b. Find the probability that a person does NOT have both type O blood and the Rh- factor.

1 - 0.06 = 0.94

0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

6 0
2 years ago
Find the product (x-y)(6x+4y)
Mazyrski [523]
The product means you multiply, so:
-y × 6x = -6xy
-y × 4y = -4y²

x × 6x = 6x²
x × 4y = 4xy


= -2xy - 4y² + 6x

I hope this helps!
7 0
3 years ago
What is the solution to this equation x/5=15<br> a.x=75<br> b.x=20<br> c.x=3<br> d.x=10
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\dfrac{x}{5}=15\ \ \ \ |\cdot5\\\\\not5\cdot\dfrac{x}{\not5}=5\cdot15\\\\x=75

Answer: a. x = 75

8 0
3 years ago
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Answer: 38 degrees equal 68 degrees which is equal 38 percent is 56% is half of 68% so the answer is 24

Step-by-step explanation:

7 0
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