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solong [7]
2 years ago
15

9+(-4)-(-2)-(7×0)=the answer​

Mathematics
2 answers:
N76 [4]2 years ago
4 0

Answer: 7

Step-by-step explanation:

Remember PEMDAS. Parentheses, exponents, multiplication & division (left to right), addition & subtraction (left to right). Also remember to switch the sign when working with negative numbers [ex. 2 - (-2) switches to 2 + 2, 2 + (-2) switches to 2 - 2), etc]

So:

9 + (-4) - (-2) - (7 × 0)

9 - 4 + 2 - 0

5 + 2

7

Crank2 years ago
3 0
<h3>- - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - </h3>

➷ You need to know these rules to do this:

Two different signs next to each other, make a negative sign

Two signs that are the same, make a plus

The answer = 7

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

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Seventy percent of kids who visit a doctor have a fever and 21% of kids have fever and sore throats . what is the probability th
Neko [114]

The probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>. Computed using conditional probability.

The probability of any event A given that event B has already taken place is found using the formula P(A|B) = P(A ∩ B)/P(B). This is known as conditional probability, where P(A ∩ B) is the probability of events A and B, and P(B) is the probability of event B.

In the question, we are given that 70% of kids who visit a doctor have a fever and 21% of kids have a fever and sore throats.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever.

We suppose the event of going to the doctor while having a fever to be B, and going to a doctor while having a sore throat to be A.

We are given that 70% of kids who visit a doctor have a fever, that is, the probability of event B, P(B) = 70% = 0.7.

We are given that 21% of kids who visit a doctor have a fever and sore throats, that is, the probability of event A and event B, P(A ∩ B) = 21% = 0.21.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever, that is, we are asked to find the conditional probability of event A, when event B has already taken place, that is, P(A|B).

By formula, we know that:

P(A|B) = P(A ∩ B)/P(B) = 0.21/0.70 = 0.30.

Thus, the probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>.

Learn more about conditional probability at

brainly.com/question/10739997

#SPJ4

3 0
1 year ago
What 2 numbets add up to get 10 and multiply to get -39
kenny6666 [7]
13 and -3

13+-3=10
13x-3=-39
3 0
3 years ago
6 decimeters to millimeters?
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5 0
3 years ago
Read 2 more answers
A shop owner can buy two televisions and three DVD players for $1750 or four televisions and one DVD players for $1250. Find the
Alenkasestr [34]

Answer:

Television = $200 and DVD player = $450

Step-by-step explanation:

→ Make 2 equations

Televisions = t and DVD players = d

2t + 3d = 1750

4t + d = 1250

→ Multiply the bottom equation by 3 to make the same variable of d

2t + 3d = 1750

12t + 3d = 3750

→ Minus the two equations to isolate the d variable

-10t = -2000

→ Divide both sides by -10 to find the cost of one television

t = 200

→ Substitute t = 200 back into 4t + d = 1250

800 + d = 1250

→ Minus 800 from both sides to isolate d

d = 450

7 0
2 years ago
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