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CaHeK987 [17]
3 years ago
8

I NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
8 0

Answer:

LOL HAHAHAHAHA

answer: 2

marin [14]3 years ago
5 0

Answer: 2

Step-by-step explanation:

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-4-7=? I dont really understand
Anit [1.1K]

-4 + -7= -11

When adding  negative numbers if the are both negative then you add them. When you have a negative and a positive you subtract.  In this problem they just took out the plus sign.

5 0
3 years ago
A special 8-sided die is marked with the numbers 1 to 8. It is rolled 20 times with these outcomes: 3 4 5 2 7 1 3 7 2 6 2 1 7 3
Greeley [361]
The prime numbers on the dice are 1,2,3,5 and 7 , the theoretical  probability is 
\frac{5}{8}, which is 62.5%, the number of prime numbers in the outcome is 15, so the experimental probability is \frac{3}{4}, which is 75%, the difference between the experimental probability and the <span>theoretical probability is 12.5%.</span>
3 0
3 years ago
Read 2 more answers
More solving quadratic equations: the quadratic formula again, what we've all been waiting for. the quadratic formula is pretty
kirill [66]
You don't have a question in there but I can tell you that the quadratic formula that is shown is not quite correct.
<span>x = -b ± √b2 - 4ac 2a
For one thing, the first 3 terms should ALL be divided by 2a
The square root symbol should be extended from b^2 through 4ac
The division symbol is missing.
So the quadratic formula SHOULD read:
x = [-b +- sq root (b^2 - 4ac) ] / 2a
Also I have attached a graphic of the quadratic formula.



</span>

5 0
3 years ago
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
Arlecino [84]

Step-by-step explanation:

try to factor them anx than set each bracket to 0 the negative one would not work

4 0
3 years ago
Ivan said that if a number end in 0 both 2 and 5 are factors of the number. Is he correct?why or why not
Nady [450]
This is true. All numbers that end in zero or five are divisible by 5, and a number that ends in zero is even, and all even numbers are divisible by two.
4 0
3 years ago
Read 2 more answers
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