3 years ago

Could you please help me with a and b

Mathematics

1 answer:

kifflom [539]3 years ago

5 0

You have to get a calculator online

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Verify the identity algebraically:<br> Csc(-x)tanx =-secx

weqwewe [10]

Step-by-step explanation:

Recall that

$\sin(-x) = -\sin x$

Therefore,

$\csc(-x) = \dfrac{1}{\sin(-x)} = -\dfrac{1}{\sin x}$

$\csc(-x)\tan x = \left(-\dfrac{1}{\sin x}\right)\left(\dfrac{\sin x}{\cos x}\right)$

$\:\:\:\:\:\:\:\:\:= -\dfrac{1}{\cos x} = -\sec x$

5 0

3 years ago

Riley wants to divide 30 flowers into 2 groups so that the ratio is 2 to 3

77julia77 [94]

30÷5 (the 5 parts from 2:3) is 6 so the first group gets 12 (2x6) and the second gets 18 (3x6)

6 0

4 years ago

Jeunesse earned $725 dollars by working 5 days in a week.What is the average amount that she earned per day

Kaylis [27]

She earned 145$ a day because 725/5 is 145

6 0

3 years ago

The Big Falcon Rocket (BFR or Starship) from Space X can carry approximately 220,000 pounds. If they only carried $100 bills, ho

kifflom [539]

Answer:

$9,979,032,100 or $9.979 billion

Step-by-step explanation:

The approximate weight of a $100 bill is 1 gram.

All of the calculations bellow assume that the volume of the bills would not be an issue and only concerns weight.

1 pound is equivalent to approximately 453.59237 grams.

The weight in grams that the Big Falcon Rocket can carry is:

$W= 220,000*453.59237=99,790,321.4\ g$

Since each bill weighs 1 gram, the number of bills it could carry, rounded to nearest whole bill is 99,790,321. The total amount it could carry is:

$A=99,790,321*\$100=\$9,979,032,100$

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4 years ago

Plot the following points on a coordinate grid and find the area of the figure (4,3); (-2,3); (-2,-1); (4,-1)

Yuki888 [10]

Answer:

24 units

Step-by-step explanation:

6 0

3 years ago

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