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1 year ago

PLEASE HELP! Need answer fast

Mathematics

1 answer:

kondaur [170]1 year ago

6 0

Answer:

Step-by-step explanation:

Because if you look closely you will be able to tell which answer it is by looking at the way the shape formed andjust breakaprt the shape .

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Derive this equation <br>In (3-4Cosx)

pantera1 [17]

Answer:

4sin(x)

Step-by-step explanation:

That is the new equation hope it helps!

6 0

2 years ago

How much of 30% HCI and 45% HCI would be needed to mix and produce 50 liters of 35% HCI

VladimirAG [237]

Answer:

33 1/3 liters of 30%
16 2/3 liters of 45%

Step-by-step explanation:

Let x represent the liters of 45% solution needed. Then the amount of HCl in the mix is ...

0.45x +0.30(50 -x) = 0.35(50)

0.15x = 0.05(50) . . . . . simplify, subtract 0.30(50)

x = (0.05/0.15)(50) = 50/3 = 16 2/3 . . . liters of 45% HCl

33 1/3 liters of 30% and 16 2/3 liters of 45% HCl are needed.

_____

<em>Comment on the solution</em>

You may notice that the general solution to a mixture problem of this sort is that the fraction of the mix that is the highest contributor is ...

(mix % - low %) / (high % - low %) = (.35 -.30) / (.45 -.30) = .05/.15 = 1/3

5 0

3 years ago

9 less than one-fifth of c

quester [9]

Answer: The equation in math form is $\frac{1}{5}c$ - 9.

Step-by-step explanation:

So the givens are:

9 less than one-fifth of c

Let's put this equation in math form:

$\frac{1}{5}c$ - 9

Hence your answer!

7 0

3 years ago

How do the lateral and total surface area of a cylinder differ ?

vichka [17]

The lateral surface area of a cylinder is just the long side connecting the bases, whereas the total surface area includes both the lateral surface area and area of the two circular bases.

$SA_l_a_t=2 \pi rh$ (Imagine a rectangle with the circumfrence of the base as one side and the height as the other being folded around)

$SA = 2 \pi rh + 2 \pi r^2$ (Plus the area of two circles)

The literal difference between surface areas would be the two bases 2πr² if you need that.

8 0

2 years ago

(-10) to the negitive 4 power

SIZIF [17.4K]

$(-10)^{-4}=\\
\left(-\frac{1}{10}\right)^4=\\
\frac{1}{10000}
$

7 0

3 years ago