Plz help me I am bad at math
2 answers:
Answer:
52
Step-by-step explanation:
C. 52
156-104=52
208-156=52
so there an increment of 52 words per minute meaning the first minute he had to type 52 words
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.25^4 + 1.25^3
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Answer:
the answer is B.
Step-by-step explanation:
PLZZ MARK BRAINLIEST
Answer:
m
Step-by-step explanation:
m
![\bf \stackrel{\textit{perimeter of a rectangle}}{P=2(L+w)}~~ \begin{cases} L=length\\ w=width\\ \cline{1-1} P=66 \end{cases}\implies 66=2(L+w) \\\\\\ 33=L+w\implies \boxed{33-w=L} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{area of a rectangle}}{A=Lw}\qquad \implies 216=Lw\implies 216=(33-w)w \\\\\\ 216=33w-w^2\implies w^2-33w+216=0 \\\\\\ (w-24)(w-9)=0\implies w= \begin{cases} 24\\ 9 \end{cases}](https://tex.z-dn.net/?f=%5Cbf%20%5Cstackrel%7B%5Ctextit%7Bperimeter%20of%20a%20rectangle%7D%7D%7BP%3D2%28L%2Bw%29%7D~~%20%5Cbegin%7Bcases%7D%20L%3Dlength%5C%5C%20w%3Dwidth%5C%5C%20%5Ccline%7B1-1%7D%20P%3D66%20%5Cend%7Bcases%7D%5Cimplies%2066%3D2%28L%2Bw%29%20%5C%5C%5C%5C%5C%5C%2033%3DL%2Bw%5Cimplies%20%5Cboxed%7B33-w%3DL%7D%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%5Cstackrel%7B%5Ctextit%7Barea%20of%20a%20rectangle%7D%7D%7BA%3DLw%7D%5Cqquad%20%5Cimplies%20216%3DLw%5Cimplies%20216%3D%2833-w%29w%20%5C%5C%5C%5C%5C%5C%20216%3D33w-w%5E2%5Cimplies%20w%5E2-33w%2B216%3D0%20%5C%5C%5C%5C%5C%5C%20%28w-24%29%28w-9%29%3D0%5Cimplies%20w%3D%20%5Cbegin%7Bcases%7D%2024%5C%5C%209%20%5Cend%7Bcases%7D)
now, both values are valid, so if "w" is either one, "L" is the other.
?x3=24
8x3=24
So the length = 8 inches
