3 years ago

Please answer now question

Mathematics

1 answer:

dimaraw [331]3 years ago

7 0

Answer:

v=168

Step-by-step explanation:

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Tyler’s family spent 90 minutes on the trolley sightseeing tour. If they spent 36 minutes riding the trolley and about 9 minutes

e-lub [12.9K]

Removing the time spent on riding the trolley:
90-36=54
And the rest of the time on the sights
Then 54/9= 6
They stopped at 6 sights

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2 years ago

Which fraction shows a correct way to set up the slope formula for the line that passes through the points (4, -6) and (-2, 1)?

alexandr402 [8]

Y +6 = -7/6 (x-4)

Mark brainliest please

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3 years ago

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On a number line, show all points whose coordinates satisfy the following inequalities: |x−20|<5

VLD [36.1K]

Answer:

On the number line integers from 16 to 24 is the answer.

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3 years ago

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Estimate the integral ∫6,0 x^2dx by the midpoint estimate, n = 6

Anettt [7]

Splitting up the interval [0, 6] into 6 subintervals means we have

$[0,1]\cup[1,2]\cup[2,3]\cup\cdots\cup[5,6]$

and the respective midpoints are $\dfrac12,\dfrac32,\dfrac52,\ldots,\dfrac{11}2$ . We can write these sequentially as ${x_i}^*=\dfrac{2i+1}2$ where $0\le i\le5$ .

So the integral is approximately

$\displaystyle\int_0^6x^2\,\mathrm dx\approx\sum_{i=0}^5({x_i}^*)^2\Delta x_i=\frac{6-0}6\sum_{i=0}^5({x_i}^*)^2=\sum_{i=0}^5\left(\frac{2i+1}2\right)^2$

Recall that

$\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6$
$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$
$\displaystyle\sum_{i=1}^n1=n$

so our sum becomes

$\displaystyle\sum_{i=0}^5\left(\frac{2i+1}2\right)^2=\sum_{i=0}^5\left(i^2+i+\frac14\right)$
$=\displaystyle\frac{5(6)(11)}6+\frac{5(6)}2+\frac54=\frac{143}2$

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3 years ago

What is the sum of 2equal numbers

meriva

Let the number be x
The sum of 2 equal numbers is simply x+x or 2x.

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3 years ago