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2 years ago

1+1-1......................help plz due in 20 secs

Mathematics

1 answer:

kap26 [50]2 years ago

4 0

1 is ur answer Step-by-step explanation:

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Csc x= -√2 for π≤x≤3π/2

love history [14]

Answer:

Step-by-step explanation:

We can write this as Sinx by "flipping" the $-\sqrt{2}$ .

So we will have: $Sin(x)=-\frac{1}{\sqrt{2} }$

From basic trigonometry, we know the value of $\frac{1}{\sqrt{2}}$ of sine is of the angle $\frac{\pi}{4}$

But when is sine negative? Either in 3rd or 4th quadrant. But the answer has to be between 0 and $\frac{3\pi}{2}$ , so we disregard 4th quadrant.

To get the angle in 3rd quadrant, we add π to the acute angle of the first quadrant (which is π/4 in our case). Thus we have:

$\frac{\pi}{4}+\pi\\=\frac{\pi +4\pi}{4}\\=\frac{5\pi}{4}$

A is the right answer.

7 0

2 years ago

If Fred is x years old now, and his sister is half as old, how old will his sister be in 5 years?

Elanso [62]

Answer: x/2+5 years old

Step-by-step explanation:

His sister would be x/2+5 years old. x/2 is his sisters age right now, and +5 is years later!

6 0

2 years ago

ace car rental rents cars for x dollars per day plus y dollars for each mile driven carlos renteda car for a 4 days drove 100 mi

Yuliya22 [10]

$T=xd+ym\\x(4)+y(100)=(120)\\x(1)+y(240)=(80)\\\\4x+960y=320\\4x+100y=120\\860y=200\\y=\frac{200}{860}\\y=\frac{10}{43}\\\\x+240(\frac{10}{43})=80\\x+\frac{2400}{43}=\frac{3440}{43}\\x=\frac{1040}{43}$

x = 1040/43 = $24.19 per day.

y = 10/43 = $0.23 per mile.

4 0

2 years ago

What is 1 1/9 plus 3 5/8

Daniel [21]

I think the answer should be 4.7 but rounded up would be 5

6 0

1 year ago

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What is 2.5 in simplest form

vfiekz [6]

2.5 still if you make it a fraction it would be 2 and 1 1/2 so you can't simplify that any more

6 0

3 years ago

Read 2 more answers