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lisabon 2012 [21]
3 years ago
6

If the area (in square units) of the region under the curve of the function f(x)=5 , on the interval from x=a to x=8 is 20 squar

e units, what is the value of a?
Answers: 4, 5, 6, 7, or 8?
Mathematics
2 answers:
weeeeeb [17]3 years ago
7 0

Answer:

a = 4

Step-by-step explanation:

The function y = f(x) = 5 is simply a horizontal straight line

the interval x=a and x= 8 represent vertical straight lines that intersect x = a and x = 8.

Hence the area above the x-axis that is bound by f(x) on the top and x=a & x=8 on the sides is simply a rectangle with height = 5 and length = ( 8 - a ), and its area is given by

area = height x length = 5 (8-a)

we are given that the area = 20,

hence

area = 20 = 5(8-a)

(8-a) = 20/5

8-a = 4

-a = 4 - 8

-a = -4

a = 4

ElenaW [278]3 years ago
6 0

Answer:

8.

Step-by-step explanation:

In the question it says x=a then says x=8 if you do the common process of elimination you can concluded the a=8.

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Citrus2011 [14]

Solution: The value of 4\times 754  is 3,016.

Explanation:

The first method of multiplication is given below:

Multiply the ones digit by the multiplier and write the ones digit of the result in the bottom line and add the tens digit to the next resultant, and same happens with the next number multiplied. This method show in given figure.

The second method of multiplication is given below:

Write the digits as the addition of their place values and then multiply those place value by multiplier individually after that add the results.

4\times 754=4\times (700+50+4)\\4\times 754=4\times700+4\times50+4\times4\\4\times754=2800+200+16\\4\times754=3016

Therefore, the value of 4\times 754  is 3,016.

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3 years ago
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aliya0001 [1]
Ok, so 11:9
11-9 = 2
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3 years ago
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Rashid [163]
If you would like to solve the inequation 4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8, you can do this using the following steps:

4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8
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The correct result would be x > 3.
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pochemuha

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Step-by-step explanation:

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