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Temka [501]
3 years ago
9

(-9) x 7? Can't figure it out​

Mathematics
1 answer:
mihalych1998 [28]3 years ago
3 0
-56

Explain 9x7 is 56 then you add a negative. Please thanks and brainliest if correct!
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Let the universal set, s, have 66 elements. a and b are subsets of s. set a contains 19 elements and set b contains 34 elements.
Otrada [13]

The cardinality of the union between two sets is given by

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

In fact, if an element is in both A and B, it is counted in both N(A) and N(B), so we're counting it twice. By subtracting the cardinality of the interserction, we're taking back one of these "extra-counted" element, and the count is correct. In your case, the numbers are

N(A \cup B) = 19+34-10 = 43

This means that the two sets cover, without repetitions, 43 of the 66 elements in the sets. So, there are

66-43 = 23

elements which are in neither A nor B

5 0
3 years ago
300 is 5% of what number
Ber [7]
At first I learned to do these equations as Part÷Whole=Percent÷100
Part(The portion)=300
Whole=X
Percent=5
So now you have
300÷X=5÷100
Set this up as a fraction and cross multiply.
Now you have 30,000=5x
Now divide both sides by 5 and you get x=6,000
6,000 is your answer.
8 0
3 years ago
Read 2 more answers
how do you put 10,000,000 years in word form? (like a century, decade, millennium, myriad, etc) I will give you the brainiest an
Darya [45]

Answer:

Ten Million!

Step-by-step explanation:

sorry bahahaha i didnt realize what you were asking for.

6 0
3 years ago
Read 2 more answers
Please someone answer urgent will give thanks and mark brainliest
ANTONII [103]
Which rug is which? I need to know before I can give the correct answer
4 0
4 years ago
Help me with this circle question
leva [86]

Answer:

50.265482457436 inches

Step-by-step explanation:

radius = 8 inches

C = 2×pi×r

= 2×pi×8

C = 50.265482457436 inches

4 0
3 years ago
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