(4.5+7.6)-8 ÷ 2.5 help me please


Answer 1

The simplified value of the expression  (4.5 + 7.6) - 8 ÷ 2.5 is 8.9.

What is the PEMDAS rule?

PEMDAS rule states the correct order of simplifying an expression is as follows -: Parenthesis, exponents, multiplications, divisions, additions, and, subtractions.

Given, An expression (4.5 + 7.6) - 8 ÷ 2.5.

First, we'll solve what's inside the parenthesis.

(4.5 + 7.6) - 8 ÷ 2.5.

= 12.1 - 8 ÷ 2.5.

= 12.1 - 3.2.

= 8.9.

learn more about the PEMDAS rule here :



Answer 2


The answer is 1.64

Step-by-step explanation:

4.5 + 7.6 = 12.1

12.1 - 8 = 4.1

4.1 ÷ 2.5 = 1.64

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x = 28

Step-by-step explanation:


6x - 4 = 164

6x = 164 + 4

6x = 168

x = 168/6

x = 28

Find the exact values of the numbers c that satisfy the conclusion of the Mean Value Theorem for the interval [−2, 2]. (Enter your answers as a comma-separated list.)



The answer is "\bold{c= \pm (2)/(√(3))}"

Step-by-step explanation:

If the function is:

\to f'(x) = 3x^2-2 \n\n\to f'(c) = 3c^2-2

points are:

\to  -2 \leq x \leq2

use the mean value theorem:

\to f'(c) = ( f(b)- f(a))/(b-a)

            = ( f(2)- f(-2))/(2-(-2))\n\n= (4-(-4) )/(4)\n\n= (8)/(4)\n\n= 2

\to 3c^2-2=2 \n\n\to 3c^2=4  \n\n\to c^2=(4)/(3) \n\nc= \pm (2)/(√(3))

Final answer:

The Mean Value Theorem states that for a continuous and differentiable function on a closed interval, there exists at least one 'c' within that interval where the average change rate equals the instantaneous rate at 'c'. In the given case of interval [-2,2], to find 'c', first calculate the average slope between the points (f(2)-f(-2))/4. Then equate this average slope to the derivative 'f'(c). The solution(s) to this equation are the c values for this problem.


The subject of this question pertains to the Mean Value Theorem in Calculus. According to this theorem, if a function f is continuous on a closed interval [a, b] and differentiable on the open interval (a, b), then there exists at least one number c in the open interval (a, b) such that the average rate of change over the interval equals the instantaneous rate of change at c.

In the given case, we're trying to find the 'c' value for the interval [-2,2]. First, we need to find the average slope between the two points. Assuming f is your function, that would be (f(2)-f(-2))/ (2 - -2). Subtract the function values of the two points and divide by the total interval length. Next, we need to see where this average slope equals the instantaneous slope 'f'(c), this entails solving the equation 'f'(c) = (f(2)-f(-2))/4. The solution to this equation will be the c values that satisfy the Mean value theorem within the provided interval.

Learn more about Mean Value Theorem here:





Answer: 12x^ 3 + 22x^ 2 +26x + 9

16x^2 +50x+21 is the answer to your question.

I dont know this please any help would be nice



  • C. Dependent


When events are independent the probability of one does not depend on the other.

Here the probability of liking peas overall is 39%, but the probability of liking peas if you're male is 42%. That is, the probabilities are not the same, so the events are dependent.


Comment on answer choices

Selections B and C are both "Dependent," so are correct in that aspect. However, the "reason" given for B has a bogus number (54%) for males liking peas. We have no idea where that number came from. C has the correct reason, so is the appropriate selection.

Choose the statement below that describes the relationship between a circles diameter and circumference. A. Circumference times diameter is always π. B. Diameter divided by circumference is always π. C. Circumference divided by diameter is always π. D. There is no relationship between circumference and diameter.​




Step-by-step explanation:

What is (6x10^6)(4x10^-1) ?



Step-by-step explanation:

Multiply the 6 and 4 together. 6*4 = 24

The next part is a bit tricky. Add the powers on the base 10. Keep the base 10.

10^(6 - 1) = 10^5

Now put the two parts together. 24 * 10^5

The number in front of the 10 must be between 1 and 10.

So 24 can be written as 24 = 2.4 * 10^1

2.4 * 10^1 * 10^5 = 2.4 * 10^(5 + 1) = 2.4 * 10^6