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4 years ago

Does anyone can help me to prove this too?? Thank you before ....

Mathematics

1 answer:

prohojiy [21]4 years ago

3 0

$\frac{1}{ cos^{2} \alpha } + \frac{1}{ sin^{2} \alpha } = \frac{ sin^{2} \alpha + cos^{2} \alpha }{ sin^{2} \alpha * cos^{2} \alpha } = \frac{1}{sin^{2} \alpha * cos^{2} \alpha}$

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Four different ways to withdrawal money out of a checking account?

GenaCL600 [577]

Answer:

physically withdrawl the money from inside the bank
ATM
move money between bank accounts
use a debit card at a grocery to get money back

Step-by-step explanation:

3 0

4 years ago

You are given a standard deck of 52 cards. Three cards are chosen at random with replacement. What is the probability of choosin

geniusboy [140]

Answer:

Probability = 0.23

Step-by-step explanation:

Probability of picking it choosen those at random without replacement =Pr(ace) + Pr(spade)+Pr(a four)

Probability = 4/52 + 4/52 + 4/52

Probability= 3(4/52)

Probability = 0.23

4 0

3 years ago

Read 2 more answers

Examine the system of equations.

MakcuM [25]

Answer:

$\boxed{\boxed{\sf x=-3}}$

Step-by-step explanation:

$\sf y = -3x - 2$

$\sf y=7$

We'll substitute y into the equation:

$\sf 7 = -3x - 2$

Switch sides:

$\sf -3x-2=7$

Add 2 to both sides

$\sf -3x-2+2=7+2$

$\sf -3x=9$

Divide both sides by -3:

$\sf \cfrac{-3x}{-3}=\cfrac{9}{-3}$

$\sf x=-3$

Therefore, the value of x/solution is -3

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8 0

3 years ago

Read 2 more answers

roberts middle school took 210 students on a school picnic at the picnic 60 students played vollyball what fraction of the stude

kumpel [21]

Answer:

I could be wrong but it's 2/7 (i think)

Step-by-step explanation:

I hope this helps :)

3 0

3 years ago

Convert the line integral to an ordinary integral with respect to the parameter and evaluate it. modifyingbelow integral from no

vovangra [49]

Parameterize $C$ by

$\vec r(t)=(1-t)(0,0,0)+t(1,3,6)=(t,3t,6t)$

with $0\le t\le1$ . Then the line integral is

$\displaystyle\int_Cxyz\,\mathrm dS=\int_0^1x(t)y(t)z(t)\left\|\frac{\mathrm d\vec r}{\mathrm dt}\right\|\,\mathrm dt$

$=\displaystyle18\sqrt{91}\int_0^1t^3\,\mathrm dt=\boxed{\frac{9\sqrt{91}}2}$

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4 years ago