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3 years ago

What is the square root of 85 and divide that by PI (3.14)

Mathematics

1 answer:

stira [4]3 years ago

4 0

√85 = 9.219544457

9.219544457 / π = 2.93467214

Round the answer as needed.

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Solve equation: 15=2y - 5(quickly please)

andrew11 [14]

15+5=2y-5+5

=20 = 2y

20/2 = 2y/2

10 = y

5 0

3 years ago

One of the roots of the quadratic equation dx^2+cx+p=0 is twice the other, find the relationship between d, c and p

scZoUnD [109]

Answer:

$c^2 = 9dp$

Step-by-step explanation:

Given

$dx^2 + cx + p = 0$

Let the roots be $\alpha$ and $\beta$

So:

$\alpha = 2\beta$

Required

Determine the relationship between d, c and p

$dx^2 + cx + p = 0$

Divide through by d

$\frac{dx^2}{d} + \frac{cx}{d} + \frac{p}{d} = 0$

$x^2 + \frac{c}{d}x + \frac{p}{d} = 0$

A quadratic equation has the form:

$x^2 - (\alpha + \beta)x + \alpha \beta = 0$

So:

$x^2 - (2\beta+ \beta)x + \beta*\beta = 0$

$x^2 - (3\beta)x + \beta^2 = 0$

So, we have:

$\frac{c}{d} = -3\beta$ -- (1)

and

$\frac{p}{d} = \beta^2$ -- (2)

Make $\beta$ the subject in (1)

$\frac{c}{d} = -3\beta$

$\beta = -\frac{c}{3d}$

Substitute $\beta = -\frac{c}{3d}$ in (2)

$\frac{p}{d} = (-\frac{c}{3d})^2$

$\frac{p}{d} = \frac{c^2}{9d^2}$

Multiply both sides by d

$d * \frac{p}{d} = \frac{c^2}{9d^2}*d$

$p = \frac{c^2}{9d}$

Cross Multiply

$9dp = c^2$

$c^2 = 9dp$

Hence, the relationship between d, c and p is: $c^2 = 9dp$

8 0

3 years ago

Is the square root of 4 plus the square root of 16 rational

Ahat [919]

Yes because square root of 4 is 2 and square root of 16 is 4. 4+2=6

4 0

3 years ago

Read 2 more answers

Ive labeled the ordered pairs but what does it mean by state the quadrant or axis in/on which the point is located

irina1246 [14]

So the image below shows what quadrants are. From the top-right square, the order of quadrants goes from 1-4 in a counter-clockwise matter.

Quadrant I: Top-right square

Quadrant II: Top-left square

Quadrant III: Bottom-left square

Quadrant IV: Bottom-right square.

Any points that are on the bolded vertical line are on the y-axis, and any points on the bolded horizontal line is on the x-axis.

6 0

3 years ago

Suppose you bought something

pav-90 [236]

Subtract to find the amount of tax paid then divide the amount of tax paid by the price of the item bought.

7.61 - 6.95 = 0.66 (amount of tax paid)

0.66/6.95 = 0.0949 x 100 = 9.49 %

Answer: 9.49 % (round off as needed)

6 0

3 years ago

What is the square root of 85 and divide that by PI (3.14)​

What is the square root of 85 and divide that by PI (3.14)