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Svetach [21]
1 year ago
7

F(x) = 3x+2What is f(5)?

Mathematics
2 answers:
svetlana [45]1 year ago
7 0

Answer:

f(5)=17

Step-by-step explanation:

3(5)+2

15+2

17

Please mark brainliest hope this helps

Mamont248 [21]1 year ago
5 0
f(x)=3x+2

To find f(5) substitute in the equation the x by 5 and evaluate:

\begin{gathered} f(5)=3(5)+2 \\ f(5)=15+2 \\ f(5)=17 \end{gathered}Then, f(5) is 17
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Greeley [361]

Answer:

8.2+/-0.25

= ( 7.95, 8.45) years

the 95% confidence interval (a,b) = (7.95, 8.45) years

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean x = 8.2 years

Standard deviation r = 1.1 years

Number of samples n = 75

Confidence interval = 95%

z value(at 95% confidence) = 1.96

Substituting the values we have;

8.2+/-1.96(1.1/√75)

8.2+/-1.96(0.127017059221)

8.2+/-0.248953436074

8.2+/-0.25

= ( 7.95, 8.45)

Therefore the 95% confidence interval (a,b) = (7.95, 8.45) years

3 0
3 years ago
HURRY!! WILL MARK BRAINLIEST!!
Alisiya [41]

Answer:

2, the second number line.

Step-by-step explanation:

-1 x 1/2 = -0.5

6 0
3 years ago
A company is creating a box without a top from a piece of cardboard, but cutting out square corners with side length x.
Volgvan
Answer: Choice B) The expression (10-2x)(30-2x)x represents the volume of the box

----------------------------------------------------
----------------------------------------------------

The original width is 10 inches. The width reduces to 10-2x inches after we cut off the top two corners of the rectangle. We can think of it as taking 10 and subtracting off two copies of x like so: 10-x-x = 10-2x

Similarly, the length goes from 30 inches to 30-2x inches. This time we're taking off the top and bottom corners (focus on either side it doesn't matter). 

The height of the box is x inches due to this portion being folded up. 

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Note: the units for the answer are in cubic inches which can be written as "in^3" (inches cubed). 

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