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Eddi Din [679]
2 years ago
12

20 POINTS!! What would be the first step to solve this equation?

Mathematics
1 answer:
Anettt [7]2 years ago
7 0

Answer:

C. Add 13 to both sides of the equation.

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, m. Add 13 to both sides of the equation:

m - 13 = 24

m - 13 (+13) = 24 (+13)

m = 24 + 13

m = 37

~

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2/4 - 2/7 in simplest form
prisoha [69]

2/4  = 1/2  

1/2 - 2/7   LCD of 2 and 7 is 14

7/14 - 4/14  = 3/14   

thats the answer
7 0
3 years ago
Find the expansions of sin⁡5θ and cos⁡5θ in terms of sin⁡θ and cos⁡θ.
qwelly [4]
\bf \textit{quad-angle identities}\\\\\\

cos(4\theta)=8cos^4(\theta)-8cos^2(\theta)+1
\\\\\\
sin(4\theta)=
\begin{cases}
8sin(\theta)cos^3(\theta)-4sin(\theta)cos(\theta)\\\\
4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)
\end{cases}\\\\
-----------------------------\\\\


\bf sin(5\theta)\iff sin(4\theta + \theta)
\\\\\\
sin(4\theta)cos(\theta)+cos(4\theta)sin(\theta)
\\\\\\\
[4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)]cos(\theta)\\\\ + [8cos^4(\theta)-8cos^2(\theta)+1]sin(\theta)

\bf -----------------------------\\\\
cos(5\theta)\iff cos(4\theta + \theta)
\\\\\\
cos(4\theta)cos(\theta)-sin(4\theta)sin(\theta)\\\\\\\
[8cos^4(\theta)-8cos^2(\theta)+1]cos(\theta)\\\\
-
[4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)]sin(\theta)

distribute... and simplify :)

4 0
3 years ago
Margo drove for 3.85 hours at an average speed of 61.4 miles per hour. Estimate the total distance that she drove. Explain your
lubasha [3.4K]
It is 236.39. Explanation if Margo is driving 61.4 miles per hour he will go that many miles an hour, tip (don't think of it as speed in math). If 3.85 hours pass multiply that against 61.4 miles an hour. Getting you 236.39. Here is an explanation. His amount of distance he covers per hour is 61.4 so every hour that number adds up and to get this just multiply against 3.85 hours. Do you get it now?
8 0
3 years ago
There are two numbers whose sum is 496 . One number is thrice the other . what are the numbers?
alexdok [17]
X + 3x = 496
x = 496/4
X = 124

Another Number equal to 496-124 equal to 372
5 0
3 years ago
You are a NASCAR fan that collects cars that are 1:64 scale to the original car. If your collection has cars that are 3 inches i
Fudgin [204]

Since we know that the ratio of the model car to the real car is 1:64, therefore we use this to solve this true length of the real NASCAR vehicle, let us call this us X, so that:

1 : 64 = 3 inches : X

1 / 64 = 3 inches / X

X = 192 inches

<span>
The true length is 192 inches</span>

3 0
3 years ago
Read 2 more answers
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