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3 years ago

Where do percentages and negative numbers under the readucal fall in the subsets of real numbers

1 answer:

3 0

Ok so here it is
natural numbers: counting numbers like 1,2,3,4,5...
whole numbers: counting numbesr and 0, so 0,1,2,3,4
integers: negative counting numbers and 0, so -3,-2,-1,0,1,2,3...
ratioal numbers, things that can be represented in a/b

percent means parts out of 100 so
x%=x/100
that is a ratioal number

negatives are integers

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In a class of 47 students, the number of males is 7 less than twice the number of females. How many females and how many males a

Rom4ik [11]

X=number of females
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# of males is 2*(number of females)-7:
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add x to both sides:
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add 7 to both sides:
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divide both sides by 3:
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Show that if u+v and u-v are orthognal, then the vectors u and v must have the same length.

pashok25 [27]

Answer with Step-by-step explanation:

We are given that

u+ v and u-v are orthogonal

We have to prove that u and v must have the same length.

When two vector a and b are orthogonal then

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By using the property

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We know that

$(a+b)\cdot (a-b)=\mid a\mid^2-\mid b\mid^2$

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4 years ago

What's -8 + (-1 1/8)

gogolik [260]

I think the answer is 9.375 if it needs to be in decimal form. If it needs to be in fraction form it would be improper, 9 3/8 would be the fraction. Hope it helps!

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