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Lena [83]
3 years ago
15

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x)

between x = 4 and x = 6.
A 4, 4.5, 5, 5.5
B 4.5, 5, 5.5, 6
C 4.25, 4.75, 5.25, 5.75
D 4, 4.2, 5.4, 6
Mathematics
1 answer:
n200080 [17]3 years ago
4 0

Answer:

Option A. 4, 4.5, 5, 5.5

Step-by-step explanation:

Left point: a=x=4

Right point: b=x=6

Range: r=b-a→r=6-4→r=2

Width of each of the four equal intervals: w=2/4→w=0.5

The first left endpoint is x1=a→x1=4

The second left endpoint is x2=x1+w→x2=4+0.5→x2=4.5

The third left endpoint is x3=x2+w→x3=4.5+0.5→x3=5

The fourth left endpoint is x4=x3+w→x4=5+0.5→x4=5.5

Then, the list is: x1, x2, x3, x4 = 4, 4.5, 5, 5.5

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3 years ago
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3 years ago
If Colorado spring, Colorado, has 1.2 times as many days of sunshine as Boston, Massachusetts, how many days of sunshine does ea
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C = 1.2B
Substitute the known value of C from the second equation into the first
C + B = 464
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Divide each side by 2.2
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Verification
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