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aleksandrvk [35]

4 years ago

15

URGENT! PLEASE HELP!

1 answer:

taurus [48]4 years ago

3 0

Answer:

780 miles :)

Step-by-step explanation:

Alright, so in one hour, the train goes 130 miles, right?

So, in 6 hours, the train would simply go 130 * 6 = 780 miles! :)

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How to derive: f(w)=ln(cos(w-1))

postnew [5]

The word you're looking for is "differentiate", not "derive".

$\dfrac{\mathrm d}{\mathrm dw}\ln(\cos(w-1))=\dfrac{\frac{\mathrm d}{\mathrm dw}\cos(w-1)}{\cos(w-1)}=\dfrac{-\sin(w-1)\frac{\mathrm d}{\mathrm dw}(w-1)}{\cos(w-1)}=-\dfrac{\sin(w-1)}{\cos(w-1)}=-\tan(w-1)$

3 0

4 years ago

Can someone help me solve this?

lesya [120]

Answer:

x=45

Step-by-step explanation:

2x+45+x=180 since it is on a straight line

3x+45=180

3x=135

x= 45

4 0

2 years ago

Read 2 more answers

How do the average rates of change for the functions f(x) = 2x2 and g(x) = 3x2 over the interval −3 ≤ x ≤ 4 compare?

DedPeter [7]

<h2>Answer with explanation:</h2>

The average rate of change for function f(x) over the interval a ≤ x ≤ b is given by :-

$\dfrac{f(b)-f(a)}{b-a}$

So, the rate of change for function $f(x)=2x^2$ over the interval −3 ≤ x ≤ 4 :

$=\dfrac{2(4)^2-2(-3)^2}{4-(-3)}=\dfrac{14}{7}=2$

The rate of change for function $g(x)=3x^2$ over the interval −3 ≤ x ≤ 4 :

$=\dfrac{3(4)^2-3(-3)^2}{4-(-3)}=\dfrac{21}{7}=3$

So, the rate of change for g(x) is greater than f(x) over the interval −3 ≤ x ≤ 4.

3 0

3 years ago

If 2x +y=-7 and 3x=6+4y are simultaneous equation, what is the value of x-y

Aleks04 [339]

Multiply by 48x+4y=28 3x-4y=6

7 0

3 years ago

The probability that is will rain today is 65%, and the probability that it will rain tomorrow is 25%.

son4ous [18]

Answer:

65%

Step-by-step explanation:

3 0

3 years ago