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2 years ago

How do I start a percentage

Mathematics

1 answer:

blondinia [14]2 years ago

8 0

Answer:

I think you should divide the number you need to turn into a percentage by the whole :)

Step-by-step explanation:

im not quite sure about this answer, but I really hope this works for what you are trying to do!

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Cos15°°- Sin 15°= 1/√2

ololo11 [35]

<h2>Refer this attachment</h2>

Hope it's help you

4 0

3 years ago

Can someone please help me?

bulgar [2K]

Solution:

Given:

18 = 2b

Solve the equation by isolating the variable.

=> 18 = 2b
=> 2b/2 = 18/2
=> b = 9

The value of b is 9.

Hoped this helped!

6 0

3 years ago

Can someone answer this

givi [52]

Answer:

what grade is this lol I don't know

5 0

2 years ago

Read 2 more answers

Compute (3+4i) +(7 − 20i).

Sveta_85 [38]

Answer:

10 -16 i

Step-by-step explanation:

given,

(3+ 4 i) + (7 − 20 i)

for the given complex number

if the number is added of subtracted the real part will add or subtract to the real part and imaginary will add or subtract to the imaginary part.

now

= (3+ 4 i) + (7 − 20 i)

= (3 + 7) + (4+(-20)) i

= 10 + (-16) i

= 10 -16 i

so, the given answer will be 10 -16 i

8 0

3 years ago

A 25-foot ladder is placed against a vertical wall. Suppose the bottom of the ladder slides away from the wall at a constant ra

dsp73

Answer: The ladder is sliding down the wall at a rate of $5\dfrac{17}{50}\ ft/sec$

Step-by-step explanation:

Since we have given that

Length of ladder = 25 foot

Distance from the wall to the bottom of ladder = 15 feet

Let base be 'x'.

Let length of wall be 'y'.

So, by pythagorus theorem, we get that

$x^2+y^2=25^2\\\\15^2+y^2+625\\\\225+y^2=625\\\\y^2=625-225\\\\y^2=400\\\\y=\sqrt{400}\\\\y=20\ feet$

$\dfrac{dy}{dx}=-4\ ft/sec$

Now, the equation would be

$x^2+y^2=625\\$

Differentiating w.r.t x, we get that

$2x\dfrac{dx}{dt}+2y.\dfrac{dy}{dt}=0\\\\2\times 15\dfrac{dx}{dt}+2\times 20\times -4=0\\\\30\dfrac{dx}{dt}-160=0\\\\\dfrac{dx}{dt}=\dfrac{160}{30}=5.34\ ft/sec$

Hence, the ladder is sliding down the wall at a rate of $5\dfrac{17}{50}\ ft/sec$

8 0

4 years ago