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2 years ago

Yeah i need help :) ...............

Mathematics

2 answers:

vovangra [49]2 years ago

8 0

Step-by-step explanation:

H=14 in.

B1=16in.

b2=9in

Area =(16+9)*14/2=175 inches²

Trava [24]2 years ago

7 0

Answer:

175 inch squared

Step-by-step explanation:

16+9=25

25/2=12.5

12.5x14=175

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larisa [96]

$\huge \bf༆ Answer ༄$

Let's solve this using unitary method ~

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$\sf1\: second= 63 \div 3 \: meters$

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Therefore , the ostrich will run 105 meters in 5 seconds.

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2 years ago

P(x)=x(2x+5)(x+1)What are the zeros of this polynomial

erastova [34]

Answer:

(0,-5/2,-1)

Step-by-step explanation:

x(2x+5)(×+1)=0

x=0 2x+5=0 x+1=0

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1 year ago

Determine which is greater, the length of a square whose area is 36 in squared or the height of a cube whose volume is 125 in cu

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2 years ago

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Leno4ka [110]

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Step-by-step explanation:

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2 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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2 years ago