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Gekata [30.6K]
3 years ago
8

Joe says there is a total of 40 students. Do you agree with Joe? Why or Why not?

Mathematics
2 answers:
brilliants [131]3 years ago
6 0

Joe is telling the truth because why would he lie about how many students were there?

mr Goodwill [35]3 years ago
3 0

Answer:

No.

Explanation:

I don't agree with Joe because if he is counting 40 students, then he has to count himself as well which will make 41 students.  

Hopefully, This helped out. :)

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Evaluate f(x) = 2|x – 5| for f(–5) and f(0).
Elanso [62]

Answer:

f(–5) = 20, f(0) = 10

Step-by-step explanation:

f(-5):

f(-5) = 2|-5 -5|

f(-5) = 2|-10|

f(-5) = 2(10)

f(-5) = 20

f(0):

f(0) = 2|0 - 5|

f(0) = 2|-5|

f(0) = 2(5)

f(0) = 10

7 0
3 years ago
What is the range of the following function?
Olin [163]
The range is the set of Y values. In this function it would be(-5,+5)
4 0
3 years ago
What is the result of 1/10 of 40?
WARRIOR [948]
This is not a difficult question and I will help you solve it :)

When calculating 1/10 from 40, what we have to do is this:

(1/10) * 40 = 4 

This means that we have to multiply 40 by 1 and divide by 10 :)

So the answer in this case is 4. 
6 0
3 years ago
Read 2 more answers
Can someone help me? Please show your work.
Allushta [10]
We know that the perimeter of a rectangle can be represented by the expression 2l +2w, where l represents the length of the rectangle and w represents the width of the rectangle.

If we substitute in the values given in this problem, we get the expression:
2(2x+6) + 2(x)

Another equivalent expression we can use to express the perimeter is w + w + l + l.

If we substitute in the values given in this problem into this expression, we get:

x + x + 2x + 6 + 2x + 6

Overall, we know that these expressions are equivalent and represent the same value (the perimeter of the rectangle), because if you combine like terms, both expressions simplify to 6x + 12.

Hope this helps!
3 0
3 years ago
What is the relative maximum value of the function f(x) = –x3 + 6x2 – 9x – 1?
Vlad [161]

Answer:

-1.

Step-by-step explanation:

First find the derivative of f(x):

f'(x) = -3x^2 + 12x - 9 = 0   for a maximum or minimum.

-3(x^2 - 4x + 3) = 0

(x - 1)(x - 3) = 0

x = 1, 3.

To find which gives a relative maximum we find the second derivative:

f"(x) = -6x + 12

When x = 1  f"(x) = 6,    positive.

when x = 3, f"(x) = -6,  negative.

So x = 3 gives a maximum value of f(x).

f(3) = -(3)^3  + 6*(3)^2  - 9(3) - 1 = -1 (answer).

7 0
3 years ago
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