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3 years ago

Need answer asap! 3a + 4b = 1 - 2c/d solve for c.

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

3 0

Answer:

-3ad/2 -2bd = c

Step-by-step explanation:

3a + 4b = 1 - 2c/d

⇒3ad + 4bd = d - 2c [multiply d on both sides]

⇒3ad + 4bd - d = -2c [subtract d on both sides]

⇒3ad/(-2) + 4bd/(-2) = c [divide -2 on both sides]

⇒-3ad/2 -2bd = c

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tankabanditka [31]

Answer:

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Step-by-step explanation:

7 0

3 years ago

Can you please explain how to do this and give me the answer so next time I know how to do it. Square root with -15 in it and sq

Drupady [299]

Answer:

15i and 4i

Step-by-step explanation:

i is an imaginary number also shown as $\sqrt{-1}$ .

Since we have $\sqrt{-15}$ , thats 15* $\sqrt{-1}$ . Substitute $\sqrt{-1}$ for i and we get 15*i or 15i.

We do the same for $\sqrt{-4}$ . This is 4* $\sqrt{-1}$ or 4*i or 4i.

An easy way to do this is to take the negative inside the square root like $\sqrt{-6}$ , take the absolute value -6 absolute value=6 and times it by i. So now it becomes 6i

3 0

4 years ago

Which is the best approximation for the measure of angle ABC?

qwelly [4]

Answer:

58.3°

Step-by-step explanation:

Missing Information:

In this question the diagram is missing Following are the attachment of diagram of the given question.

As we seen that the vertex c is making the right angle i,e 90° also there is an acute angle the Hypotenuse: 20 cm and the perpendicular is 10.5 cm

Now we have find the best approximation of the angle ABC used the cosx trigonometric function.

$cos\ x\ =\ \frac{perpendicular}{Hypotenuse} \\$

Putting the value of perpendicular and hypotenuse in the previous formula we get

$cos\ x\ =\ \frac{10.5\ cm}{20\ cm} \\$

$x\ =cos^{-1}\ 0.525\\x \ = \ 58.33$

8 0

3 years ago

Integration: How would I get to this answer?

Scrat [10]

Given that $y$ attains a maximum at $x=1$ , it follows that $y'=0$ at that same point. So integrating once gives

$\displaystyle\int\frac{\mathrm d^2y}{\mathrm dx^2}\,\mathrm dx=\int-8x\,\mathrm dx$
$\dfrac{\mathrm dy}{\mathrm dx}=-4x^2+C_1$
$\implies -4(1)^2+C_1=0\implies C_1=4$

and so the first derivative is $y'=-4x^2+4$ .

Integrating again, you get

$\displaystyle\int\frac{\mathrm dy}{\mathrm dx}\,\mathrm dx=\int(-4x^2+4)\,\mathrm dx$
$y=-\dfrac43x^3+4x+C_2$

You know that this curve passes through the point (2, -1), which means when $x=2$ , you have $y=-1$ :

$-1=-\dfrac43(2)^3+4(2)+C_2$
$\implies C_2=\dfrac53$

and so

$y=-\dfrac43x^3+4x+\dfrac53$

7 0

4 years ago

A Series (Or Infinite Series) is obtained from a sequence by adding the terms of the sequence.

maw [93]

Answer:

a. True

Step-by-step explanation:

A series in the field of mathematics is defined as the operation of adding up or summation of infinitely many quantities of terms of a sequence. In other words, it is the sum of the terms of the sequence provided.

Another way of defining a 'series' is it is list of numbers with the "addition" operations between the numbers.

Thus the answer is (a). True

6 0

3 years ago