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alexandr402 [8]
2 years ago
10

I need help I’m bad at math

Mathematics
1 answer:
Alina [70]2 years ago
5 0
If you'd graph this function, you'd see that it's positive on [-1.5,0], and that it's possible to inscribe 3 rectangles on the intervals [-1.5,-1), (-1,-0.5), (-0.5, 1].

The width of each rect. is 1/2.

The heights of the 3 inscribed rect. are {-2.25+6, -1+6, -.25+6} = {3.75,5,5.75}.

The areas of these 3 inscribed rect. are (1/2)*{3.75,5,5.75}, which come out to:

{1.875, 2.5, 2.875}

Add these three areas together; you sum will represent the approx. area under the given curve on the given interval:  1.875+2.5+2.875 = ?
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Convert 7.82km to centimeters and 4871 mm to centimeters​
nasty-shy [4]

Answer:

7.82km = 782000cm

4871mm = 487.1

For the Millimeter one you divide the length value by 10 and for the kilometer one you multiply the length value by 100000.

4 0
2 years ago
Find the sum of the series using the formula
Gnom [1K]

Answer:

We have a1 = 27 and r = 3 (because 27:9 = 3; 9:3 = 3; 3:3 = 1);

Then s = 27 / (1 - 3) ;

Finally, s = - 27 / 2;

Step-by-step explanation:

8 0
2 years ago
Does anyone know what X equals to
Dmitrij [34]
 Best Answer

x means everything in algebra. It is a variable, which means that its meaning changes based on context. For example, x could be time, but it could also be cars. x is what all Mathematicians chase after and it is also the greatest tool at their disposal. x is generally called an independent variable because its value determines the output of a function. y, on the other hand, is the result of fooling around with x. It's a dependent variable, which means that y changes when x changes. 

8 0
3 years ago
Complete the table for the given rule. Rule: y= 3x
Ratling [72]

Answer:

x=5

y=30

x=15

Step-by-step explanation:

y=3x=15, then x=15/3, x=5

x=10, then y=3x=3*10=30

y=3x=45, then x=45/3, x=15

6 0
3 years ago
Solve 4x - 3 = 18. Round to the nearest thousandth.
lorasvet [3.4K]

Answer:

x=5.250

Step-by-step explanation:

We have been given an equation 4x-3=18. We are asked to solve our given equation.

First of all, we will add 3 to both sides of our equation.

4x-3+3=18+3

4x=21

Now, we will divide both sides of our equation by 4.

\frac{4x}{4}=\frac{21}{4}

x=5.25

Upon rounding our answer to nearest thousandth (3 places after decimal) we will get,

x=5.250

Therefore, the solution for our given equation is x=5.250.

6 0
3 years ago
Read 2 more answers
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