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lina2011 [118]
3 years ago
12

Cheyanne is saving for a car. The amount she has saved for the car, f(x), can be represented by the function f(x) = 65x + 750, w

here x is the number of weeks she has saved. Suppose 750 changed to 700. What does this mean in the context of the problem?
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
6 0
She initially had $700 saved before working
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The answer is 6 btw it’s wrong!
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What is the value of the expression? 92÷(−3)0<br> −27<br><br> 3<br><br> ​27​<br><br> 81
yulyashka [42]
For this case we have the following expression:
 \frac{9^2}{(-3)^0} &#10;
 The first thing you should know for this case, is that by power properties we have:
 Every number raised to zero is equal to unity.
 We then have to rewrite the expression:
 \frac{81}{1}
 81
 Answer:
 
The given expression is equal to:
 
81
 option 4.

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Question 2 of 10
ratelena [41]

Answer:

Sorry

Step-by-step explanation:

Sorry i need the points.

3 0
3 years ago
I need help proving this ASAP
Ket [755]

Answer:

See explanation

Step-by-step explanation:

We want to show that:

\tan(x +  \frac{3\pi}{2} )  =  -   \cot \: x

One way is to use the basic double angle formula:

\frac{ \sin(x +  \frac{3\pi}{2} ) }{\cos(x +  \frac{3\pi}{2} )}  =  \frac{ \sin(x)  \cos( \frac{3\pi}{2} )  +   \cos(x)  \sin( \frac{3\pi}{2}) }{\cos(x)  \cos( \frac{3\pi}{2} )   -    \sin(x)  \sin( \frac{3\pi}{2}) }

\frac{ \sin(x +  \frac{3\pi}{2} ) }{\cos(x +  \frac{3\pi}{2} )}  =  \frac{ \sin(x) ( 0)  +   \cos(x) (  - 1) }{\cos(x) (0)   -    \sin(x) (  - 1) }

We simplify further to get:

\frac{ \sin(x +  \frac{3\pi}{2} ) }{\cos(x +  \frac{3\pi}{2} )}  =  \frac{ 0  -   \cos(x) }{0 +    \sin(x) }

We simplify again to get;

\frac{ \sin(x +  \frac{3\pi}{2} ) }{\cos(x +  \frac{3\pi}{2} )}  =  \frac{- \cos(x) }{ \sin(x) }

This finally gives:

\frac{ \sin(x +  \frac{3\pi}{2} ) }{\cos(x +  \frac{3\pi}{2} )}  =  -  \cot(x)

6 0
4 years ago
Audrey and her family are discussing how to pay for her college
Elan Coil [88]

Answer:

$137.50

Step-by-step explanation:

11,000 x .15 (100-.85)=$1.650 amount she will have to pay annually.

$1,650/12months = $137.50 is minimum to save monthly.

4 0
3 years ago
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