3 years ago

How do u do this (y–4)(4y+2)

2 answers:

6 0

This is binomial distributing, or at least that's what my teacher called it.

(y-4)(4y+2)

Use the FOIL method (First, Outside, Inside, Last)

Start with y(4y)

The rest is all up to you!

frutty [35]3 years ago

4 0

I hope this helped! :)

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The function c=6t+8 represents the cost(c) for the T-shirts(t) plus shipping.

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Answer:

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Step-by-step explanation:

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4 years ago

Y = 3x - 7

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3 years ago

I was wondering if i could get help on my geometry i’ve been struggling

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We need to count the units to go from A to A'

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1 year ago

Help...............??

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This is easy :D all you have to do is provide the square root of 9 which is 3

~ Hope This Helps :D ~

5 0

3 years ago

Read 2 more answers

(a) Find the Riemann sum for f(x) = 4 sin(x), 0 ≤ x ≤ 3π/2, with six terms, taking the sample points to be right endpoints. (Rou

miskamm [114]

Split up the integration interval into 6 subintervals:

$\left[0,\dfrac\pi4\right],\left[\dfrac\pi4,\dfrac\pi2\right],\ldots,\left[\dfrac{5\pi}4,\dfrac{3\pi}2\right]$

where the right endpoints are given by

$r_i=i\dfrac{\frac{3\pi}2-0}6=\dfrac{i\pi}4$

for $1\le i\le6$ . Then we approximate the integral

$\displaystyle\int_0^{3\pi/2}4\sin x\,\mathrm dx$

by the Riemann sum,

$\displaystyle\sum_{i=1}^6f(r_i)\frac{\frac{3\pi}2-0}6=\pi\sum_{i=1}^6\sin\frac{i\pi}4$

$=\pi\left(\dfrac1{\sqrt2}+1+\dfrac1{\sqrt2}+0-\dfrac1{\sqrt2}-1\right)=\dfrac\pi{\sqrt2}\approx\boxed{2.221441}$

Compare to the actual value of the integral, which is exactly 4.

5 0

4 years ago