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satela [25.4K]
3 years ago
6

Converting with Decimals, Percent, and Fractions. Please help me ASAP!

Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

1 is 0.5 and 50%

2 is 0.2 and 20%

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Let f(x)=x^2f ( x ) = x 2. Find the Riemann sum for ff on the interval [0,2][ 0 , 2 ], using 4 subintervals of equal width and t
sladkih [1.3K]

Answer:

A_L=1.75

Step-by-step explanation:

We are given:

f(x)=x^2

interval = [a,b] = [0,2]

Since n = 4 ⇒ \Delta x = \frac{b-a}{n} = \frac{2-0}{4}=\frac{1}{2}

Riemann sum is area under the function given. And it is asked to find Riemann sum for the left endpoint.

A_L= \sum\limits^{n}_{i=1}\Delta xf(x_i) = \frac{1}{2}(0^2+(\frac{1}{2})^2+1^2+(\frac{3}{2})^2)=\frac{7}{4}=1.75

Note:

If it will be asked to find right endpoint too,

A_R=\sum\limits^{n}_{i=1}\Delta xf(x_i) =\frac{1}{2}((\frac{1}{2})^2+1^2+(\frac{3}{2})^2+2^2)=\frac{15}{4}=3.75

The average of left and right endpoint Riemann sums will give approximate result of the area under f(x)=x^2 and it can be compared with the result of integral of the same function in the interval given.

So, (A_R+A_L)/2 = (1.75+3.75)/2=2.25

\int^2_0x^2dx=x^3/3|^2_0=8/3=2.67

Result are close but not same, since one is approximate and one is exact; however, by increasing sample rates (subintervals), closer result to the exact value can be found.

3 0
3 years ago
HELP!!!!<br><br> I need an answer soon, please!!!<br><br> I will give Brainliest!!!!
sattari [20]

Answer:

180

Step-by-step explanation:

In this drawing I made, I added some variables. a and d are complimentary, meanwhile b and c are complimentary. A straight line is an angle of 180 degrees. Therefore, a + b = 180.

7 0
3 years ago
How many square feet of carpet will we need for this hole
Inessa05 [86]

Answer:

FIND THE HOLE SIZE IN THIS CASE THERE IS NO SIZE SO  ZERO IS THE AWNSER

pls can i have brainliest

3 0
3 years ago
Read 2 more answers
Now, consider a right triangle with legs of lengths 5 cm and 12 cm. what is the length c of the hypotenuse of this triangle?
Rufina [12.5K]
Hypotenuse^2=12^2+5^2=144+25=169

⇒ hypotenuse =V169=13 cm


8 0
3 years ago
Has anyone done this yet and can screenshot and show their answers?
beks73 [17]

No sorry. but if you have ro blox. friend me: Anime_reign123

and If you have discord, friend me: Loner.gurl.07#2244

(i think those are my numbers. try it and lemme know if it works!)

7 0
3 years ago
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