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2 years ago

(a) What is wrong with the following equation?

Mathematics

1 answer:

KengaRu [80]2 years ago

6 0

The numerator and denominator need parentheses for clarity.

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Find missing measure

Margaret [11]

Answer:

60°

Step-by-step explanation:

360 - ( 80+115+10) = 60°

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3 years ago

1. What was the second of two crucial events that increased U.S. concerns about the spread of

sineoko [7]

1. the answer is D
2. You are correct it is vietnam
3. the answer is 1947

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3 years ago

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Which expression is equivalent to 2(a+2b)-a-2b<br> o 3a+2b<br> o 3a-2b<br> o a-2b

lys-0071 [83]

Answer:

a -2b

Step-by-step explanation:

2(a+2b)-a-2b

Distribute

2a+4b -a-2b

Combine like terms

a -2b

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3 years ago

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.

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3 years ago

Which values are solutions to the inequality below?<br> Check all that apply

Masja [62]

Answer: b, c, e

Step-by-step explanation:

7 0

2 years ago

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