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Irina-Kira [14]
3 years ago
6

A teacher grades her students test using the formula :

Mathematics
2 answers:
Mariana [72]3 years ago
7 0

To find the answer you need to do 7 divided by 8.

0.875

.....also known as 87.5%

Troyanec [42]3 years ago
6 0

Answer:

0.875

Step-by-step explanation:

divide 7 by 8 to get the answer

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How to differentiate y=x^n using the first principle. In this question, I cannot use the rule of differentiation. I have to do t
Zarrin [17]

By first principles, the derivative is

\displaystyle\lim_{h\to0}\frac{(x+h)^n-x^n}h

Use the binomial theorem to expand the numerator:

(x+h)^n=\displaystyle\sum_{i=0}^n\binom nix^{n-i}h^i=\binom n0x^n+\binom n1x^{n-1}h+\cdots+\binom nnh^n

(x+h)^n=x^n+nx^{n-1}h+\dfrac{n(n-1)}2x^{n-2}h^2+\cdots+nxh^{n-1}+h^n

where

\dbinom nk=\dfrac{n!}{k!(n-k)!}

The first term is eliminated, and the limit is

\displaystyle\lim_{h\to0}\frac{nx^{n-1}h+\dfrac{n(n-1)}2x^{n-2}h^2+\cdots+nxh^{n-1}+h^n}h

A power of h in every term of the numerator cancels with h in the denominator:

\displaystyle\lim_{h\to0}\left(nx^{n-1}+\dfrac{n(n-1)}2x^{n-2}h+\cdots+nxh^{n-2}+h^{n-1}\right)

Finally, each term containing h approaches 0 as h\to0, and the derivative is

y=x^n\implies y'=nx^{n-1}

4 0
3 years ago
Investment of $3000 at 16% simple interest for two years.
Yanka [14]
I=PRT
r=rat
P=present amount
I=interst
t=time in yeare

2 years
16%
3000
I=2*3000*0.16
I=$960

3 0
4 years ago
Read 2 more answers
WILL MARK BRAINLIEST HELP ASAP ASAP
Alina [70]

Answer:

B

Step-by-step explanation:

I got this answer correct on a test

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3 years ago
Attendance at the big game was only 80% of last years attendance, but that still means 12,000 people showed up. how many people
astraxan [27]
12000*100/80=15000 coz 12000 is 80% that's why you divide by 80 and multiply by 100
8 0
3 years ago
The median of the data set is 81. What number is missing?<br><br> 82, 87, _, 77, 70, 80, 88
mina [271]
Median is the middle number.
Rearrange the numbers to smallest to biggest.
70, 77, 80, _, 82, 87, 88
If the median of the data set is 81 the middle number needs to be 81.
So the missing number is 81.
70, 77, 80, 81, 82, 87, 88
7 0
3 years ago
Read 2 more answers
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