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3 years ago

Graphing Quadratic function

Mathematics

1 answer:

AnnyKZ [126]3 years ago

7 0

I use a website called desmos.com when I need to graph a function. Heres a picture of what it should look like.

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Solve: 9y+1 = 32y+1 + 54

Setler79 [48]

Answer:

9y+1=32y+1+54

collect like terms, a symbol changes once it crosses the equal to sign =

9y-32y=1+54-1

-23y=54

divide both sides by -23

-23y/-23=54/-23

-23 will cancel -23 to give y

y=54/-23

y=-2.4 or 2 whole number 8/23

7 0

3 years ago

Read 2 more answers

If the length of the minute hand of the clock in London commonly known as "Big Ben" is 11.25' from the center of the clock to th

DochEvi [55]

Answer:

33.15 square inches.

Step-by-step explanation:

Given:

Length of the minute hand is 11.25' from the center of the clock to the tip of the hand.

Question asked:

What is the area swept out by the minute hand as it moves 5 minutes of time?

Solution:

As length of the minute hand is '11.25' from the center of the clock to the tip of the hand means radius of the circle, r = 11.25 inches.

First of all we will find area of circle swept by the minutes hand,

$Area\ of\ circle=\pi r^{2}$

$=\frac{22}{7} \times11.25\times11.25\\\\ =\frac{2784.375}{7} \\ \\ =397.77\ square\ inches$

When minute hand moves 60 minutes, it makes one circle of area 397.77 square inches.

By using unitary method, we will calculate area swept by minute hand in 5 minutes:-

In 60 minutes, area swept = 397.77 square inches

In 1 minute, area swept = $\frac{397.77}{60}$

In 5 minutes, area swept = $\frac{397.77}{60}\times5=\frac{1988.85}{60} =33.15\ square\ inches$

Thus, the area swept out by the minute hand is 33.15 square inches when it moves 5 minutes.

8 0

4 years ago

What expression represents the statement below?

n200080 [17]

(n / 10) + 15

The quotient is the result of division between two numbers

8 0

3 years ago

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4-[2.5(5.4+2.6)-(-7.2)

valkas [14]

-23.2 I think this is the answer

7 0

3 years ago

I’ve noticed here are around 4 ways to solve a Quadratic Equation. Factoring, Completing the square, The quadratic Formula, and

valentina_108 [34]

Answer:

See explanation

Step-by-step explanation:

Usually, I just find the quadratic formula the easiest to go, but here are some tips to tell if which you should use.

1. First see if you can get integer values for the roots to multiply to c and add to b.

This is the easiest way to solve a quadratic equation, and I always check for whether I can easily find the roots by multiply two numbers for c and adding them for b.

For instance, the Quadratic $x^2 + 5x + 6$

I can easily see that 2 and 3 are the roots here - as $2\cdot3=6$ and $2+3=5$ . If you can do this and receive integer values, then great! I'd definitely stick with this.

2. See if you can complete the square

If you have a quadratic which is a perfect square, you'll be able to tell if c is a perfect square, and b is twice that number. This will be easiest. Any quadratic equation can be solved by completing the square, but I personally stick to this method only if I can tell it's a perfect square quadratic.

3. Stick to the Quadratic Formula

If all else fails, go with the Quadratic formula. It's not that hard and it gets the job done. I would highly discourage going with graphing, as it takes too much time and it's quite a hassle unless you have a graphing calculator.

I really hope this helped!

5 0

4 years ago

Read 2 more answers