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LUCKY_DIMON [66]

3 years ago

8

4- What are the different waysto solve a quadratic? List examples of each

1 answer:

TiliK225 [7]3 years ago

8 0

I know of two ways to solve quadratic equations. The first is through factoring. Let us take the example (x^2)+2x+1=0. We can factor this equation out and the factors would be (x+1)(x+1)=0. To solve for the roots, we equate each factor to 0, that is

x+1=0; x+1=0

In this case, the factors are the same so the root of the equation is

x=1.

The other way is to use the quadratic formula. The quadratic formula is given as [-b(+-)sqrt(b^2-4ac)]/2a where, using our sample equation above, a=1, b=2 and c=1. Substitute these to the formula, and you will get the same answer as the method above.

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By car, John traveled from city A to city B in 3 hours. At a rate that was 20 mph

alex41 [277]

60 miles because (20mph)((3hrs) = 60

8 0

2 years ago

Read 2 more answers

To prove :One plus cot square theta into tan theta by sec square theta = cot theta

pickupchik [31]

we are given

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$

We will simplify left side and make it equal to right side

Left side:

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we can use trigonometric identity

$1+cot^2(\theta)=csc^2(\theta)$

we can replace it

$\frac{(csc^2(\theta))*tan(\theta)}{sec^2(\theta)}$

we know that

csc=1/sin and sec=1/cos

so, we can replace it

and we get

$\frac{cos^2(\theta)tan(\theta)}{sin^2(\theta)}$

now, we know that

tan =sin/cos

$\frac{cos^2(\theta)*sin(\theta)}{sin^2(\theta)*cos(\theta)}$

we can simplify it

and we get

$\frac{cos(\theta)}{sin(\theta)}$

we can also write it as

$=cot(\theta)$

Right Side:

$cot(\theta)$

we can see that

left side = right side

so,

$\frac{(1+cot^2(\theta))*tan(\theta)}{sec^2(\theta)} =cot(\theta)$ ......Answer

6 0

3 years ago

How do I solve this?

kirill115 [55]

Rewrite -32 as( -2)^5 5squareroot (-2)^5 Assume positive real numbers You will get -2

5 0

2 years ago

Read 2 more answers

Please help answer this question it would help if multiple people answered so I could confirm a correct answer thank you

evablogger [386]

Answer:

53.33

Step-by-step explanation:

finding area of ΔPAM

using similar triangles

$\frac{4}{x}= \frac{12}{4}$

16 = 12x; x = $\frac{4}{3}$

ΔPAM = 4/3 * 4 * 1/2 = 16/6 = 8/3

ΔPAL = 4 * 12 * 1/2 = 24

24 + 8/3 = 80/3 (using fraction form for now, will round later)

since there are two ΔPLM (ΔLMU has same area since they are congruent)

we can multiply 80/3 by 2

80/3 * 2 = 160/3 = 53.33

4 0

3 years ago

What is this...........?

SSSSS [86.1K]

Answer:

w³=512

w=8

it is 8 centimeters

6 0

3 years ago