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Lorico [155]
3 years ago
13

Can someone please help me with this

Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
You should’ve listened in class dummy
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-40) No
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8 0
3 years ago
The mass of the sun is 2.13525×1030 kilograms. The mass of Mercury is 3.285×1023 kilograms. How many times greater is the mass o
Helga [31]
<span>6.5 x 10^6 To answer this question, you need to divide the mass of the sun by the mass of mercury. So 2.13525 x 10^30 / 3.285 x 10^23 = ? To do the division, divide the mantissas in the normal fashion 2.13525 / 3.285 = 0.65 And subtract the exponents. 30 - 23 = 7 So you get 0.65 x 10^7 Unless the mantissa is zero, the mantissa must be greater than or equal to 0 and less than 10. So multiply the mantissa by 10 and then subtract 1 from the exponent, giving 6.5 x 10^6 So the sun is 6.5 x 10^6 times as massive as mercury.</span>
8 0
3 years ago
Read 2 more answers
Hannah has 8 over 9 of a pound of birdseed. She put 2 over 3 of a pound of birdseed into her bird feeders. How much birdseed doe
Reptile [31]
8/9 - 2/3 = 8/9 - 6/9 = 2/9 of a pound left

She  had 8/9 of a pound of birdseed to begin with.  She used 2/3 of a pound of birdseed into her feeders.  You have to get a common denominator, would be 9 and when you subtract what she used from what she had you get 2/9 of a pound of birdseed left.
8 0
3 years ago
(i’ll mark brainliest if it’s correct )
morpeh [17]
25 x 60 = 1500
10 x 60 = 600
The answer is 600
4 0
3 years ago
19. The numerator of a fraction is 1 less than the denominator.
yulyashka [42]

Let the original fraction be

\dfrac{n-1}{n}

Now let's increase both numerator and denominator by 2:

\dfrac{n+1}{n+2}

This produces a 1/12 increase:

\dfrac{n+1}{n+2}-\dfrac{n-1}{n}=\dfrac{1}{12}

The left hand side can be rearranged as

\dfrac{2}{n^2+2n}=\dfrac{1}{12}

Invert both sides:

\dfrac{n^2+2n}{2}=12 \iff n^2+2n=24

Solve the quadratic equation:

n^2+2n-24=0 \iff n=-6 \lor n=4

So, in the first case, the original fraction is

\dfrac{n-1}{n}=\dfrac{-6-1}{-6}=\dfrac{7}{6}

In the second case, we have

\dfrac{n-1}{n}=\dfrac{4-1}{4}=\dfrac{3}{4}

5 0
3 years ago
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