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attashe74 [19]
3 years ago
12

Evaluate the following function for f(x)=−3 f(x)=2x+5

Mathematics
2 answers:
Masja [62]3 years ago
6 0

Answer:

x = -4

Step-by-step explanation:

Step 1: Write out given

f(x) = -3

f(x) = 2x + 5

Step 2: Substitute f(x)

-3 = 2x + 5

Step 3: Solve for <em>x</em>

-3 - 5 = 2x + 5 - 5

-8 = 2x

-8/2 = 2x/2

-4 = x

Setler [38]3 years ago
6 0

Answer:

<h2>x = - 4</h2>

Step-by-step explanation:

f(x)=2x+5

To find f(x)=−3 equate f(x) to - 3 and evaluate

That's

2x + 5 = - 3

Subtract 5 from both sides

That's

2x + 5 - 5 = - 3 - 5

2x = - 8

Divide both sides by 2

\frac{2x}{2}  =  -  \frac{8}{2}

We have the final answer as

<h3>x = - 4</h3>

Hope this helps you

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Answer:

1/6

Step-by-step

8 0
3 years ago
A random sample of 18 fields of barley has a mean yield of 36.4 bushels per acre and standard deviation of 7.37 bushels per acre
dexar [7]

Answer:

So, the confidence interval is [34.08, 38.72].

Step-by-step explanation:

We know that a  random sample of 18 fields of barley has a mean yield of 36.4 bushels per acre and standard deviation of 7.37 bushels per acre.  

We have :

n=18\\\\\mu=36.4\\\\\sigma=7.37\\\\c=80\%

We use the Appendix: Critical Values Tables, and we get that:

t_{\frac{\alpha}{2}}=1.333

We calculate the margin of error:

E=t_{\frac{\alpha}{2}}\cdot \frac{\sigma}{\sqrt{n}}=1.333\cdot \frac{7.37}{\sqrt{18}}=2.32

We get the boundaries of the confidence interval:

\mu-E=36.4-2.32=34.08\\\\\mu+E=36.4+2.32=38.72\\

So, the confidence interval is [34.08, 38.72].

6 0
4 years ago
My question is below ​
inysia [295]
The equation is y=-10x-6
7 0
4 years ago
Divide. (-5w^10+10w^8+5w^6)/(5w^5)
Veronika [31]
<span>(-5w^10+10w^8+5w^6)/(5w^5)
to divide we can factor out 5w^5 from the numerator
=[5w^5(-w^5+2w^3+w)]/(5w^5)
5w^5 will cancel out to have
=(-w^5+2w^3+w)
Hence
 Answer:</span>(-w^5+2w^3+w)<span>

</span>
3 0
4 years ago
Read 2 more answers
Which of the following inequalities are correct?
Natali5045456 [20]

Answer:

A and B

Step-by-step explanation:

- 3/5 is less than -1/5 because it is farther away from 0 on a number line (also, when it comes to figure out which inequality is true with negative number, the smaller one is going to be greater because it is closer to 0 on a number line)

3/5 is greater than 1/5 because they are both positive and 3/5 is the bigger number

-1/5 is not less than -3/5 because if A is true, than this cannot be true because it is saying the exact opposite.

6 0
3 years ago
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