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Ronch [10]
3 years ago
5

Question three..................

Mathematics
1 answer:
Sophie [7]3 years ago
7 0
A car can go 5 miles with 2 gallons of gas because 5 times 10 is 50, so do the same with 2. 2 times 10 equals 20. Now, to find how much gasoline it take for 60 miles, you must divide 60 by 5, which is 12, so, now multiply 12 by 20 (gallons of gasoline you need in order to go 5 miles), which is 240. 
Therefore, it take 240 gallons of gasoline to drive 60 miles.

Hope this helped :)
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3 years ago
Read 2 more answers
option 1 drop down are: even-odd identity, quotient identity, Pythagorean identity, double-number identity.option 2 drop down ar
motikmotik

Answer:

The equation is given below as

\frac{\cos2x}{\cos x}=\cos x-\sin x\tan x

Step 1:

We will work on the left-hand side, we will have

\begin{gathered} \cos x-\sin x\tan x \\ \text{recall that,} \\ Quoitent\text{ identity is} \\ \tan x=\frac{\sin x}{\cos x} \end{gathered}

By substituting the identity above, we will have

\begin{gathered} \cos x-\sin x\tan x=\cos x-\frac{\sin x.\sin x}{\cos x}=\cos x-\frac{\sin^2x}{\cos x} \\  \end{gathered}

Here, we will make use of the quotient identity

Step 2:

By writings an expression, we will have

\begin{gathered} \cos x-\sin x\tan x=\cos x-\frac{\sin x.\sin x}{\cos x} \\ \cos x-\sin x\tan x=\frac{\cos^2x-\sin^2x}{\cos x} \end{gathered}

Here, we will use the definition of subtraction

\cos x-\frac{\sin^2x}{\cos x}

Step 3:

We will apply the double number identity given below

\begin{gathered} \cos 2\theta=\cos (\theta+\theta)=\cos ^2\theta-\sin ^2\theta \\ \cos 2x=cos(x+x)=\cos ^2x-\sin ^2x \end{gathered}

By applying this, we will have

\frac{\cos^2x-\sin^2x}{\cos x}=\frac{\cos2x}{\cos x}

Here, we will use the double number identity

\frac{\cos^2x-\sin^2x}{\cos x}

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Step-by-step explanation:

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Step-by-step explanation:

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A

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Kiki wants to know how wide or how much space of her wall her window is taking up therefore the answer is A
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