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slavikrds [6]
3 years ago
13

(8b+7)+(6×-4)+(5c+8)

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0
+ 8b + 11 + 6x + 5c <span> is the answer</span>
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Solve the system of equations.<br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%3D220x-160%7D%20%5Catop%20%7By%3
Leni [432]

\begin{cases} y=220x-160\\ y=20x^2-400 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\textit{\Large y}}{220x-160}~~ = ~~20x^2-400} \\\\\\ -160=20x^2-220x-400\implies 0=20x^2-220x-240 \\\\\\ 0=20(x^2-11x-12)\implies 0=x^2-11x-12 \\\\\\ 0=(x-12)(x+1)\implies x= \begin{cases} 12\\ -1 \end{cases}

\dotfill\\\\ x=12\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(12)-160}\implies y=2480 \\\\\\ x=-1\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(-1)-160}\implies y=-380 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (12~~,~~2480)\qquad (-1~~,~~-380)~\hfill

4 0
2 years ago
The hawaiian language has 12 letters: five vowels and seven consonants. each of the 12 hawaiian letters are written on a slip of
miskamm [114]
1. There are12 total letters 5 vowels and 7 consonants in the hawaiin alphabet.

2. probability of 1st letter being a vowel is 5/12
3. probability of 2nd letter being a vowel is 5/12
4. probability of both occurring is (5/12 * 5/12) = 25/144 ←
5 0
3 years ago
Read 2 more answers
Triangle ABC has the following properties: Angle A measures 120°; AB ≅ AC. What is the classification of triangle ABC by angles
Flura [38]
The answer is C <<<=====
It can't be anything else. It is not a right angle. A>90
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8 0
3 years ago
Sue has $2.10 in dimes and nickels. If she has 12 more dimes than nickels, how many of each coin does she have?
Andreas93 [3]
Sue would have 21 dimes and 12 less of 21 is 9, so sue has 9 nickels

dimes: 21
nickels: 9
8 0
3 years ago
The volume of a cube is 1,728 cubic units. What is the length of one side?
nalin [4]
The volume of a rectangular prism is always LWH=V, the cube is a special prism in that L=W=H are all equal so:

V=s^3  where s is the length of all sides...

s^3=1728

s=1728^(1/3)

s=12 units
5 0
3 years ago
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