All categories

4 years ago

B^2-4b+4=0 Quadratic formula

1 answer:

5 0

$b^2-4b+4=0 \\ \\ b = \frac{-(-4) \pm \sqrt{(-4)^2 - 4(1)(4)} }{2(1)} \\ \\ b = \frac{-(-4)}{2(1)} \\ \\ b = 2 \\ \\$

The final result is: b = 2.

You might be interested in

5(x – 10) = 30 – 15x<br> Solve

Doss [256]

Answer:

x=4

Step-by-step explanation:

5(x-10) = 30- 15x

5x - 50= 30 - 15x

+15x +15x

20x - 50 = 30

+50 +50

20x = 80

/20 /20

x = 4

Hope this helps!

7 0

4 years ago

Write 3x 1/2 in radical form

stiv31 [10]

Answer:

3x^1/2 in radical form is

$\sqrt{3x}$

Hope this helps you

8 0

4 years ago

All the items on the sale rack were 75 percent off their original price.

tresset_1 [31]

Answer:

112 $ is the original price

Step-by-step explanation:

$x \times 0.75 = 84 \\ x = 84 \div 0.75 \\ x = 112$

you have to think that the original price multiplied by 0.75 (also known as 75%) gave the result of what he saves i.e 84 $. So we put up an equation with the original price multiplied by 75% which equals the 84 $ he saved on buying that item on sale

4 0

3 years ago

Calculate the length of the line segment round to the nearest whole number 6,6 and -2,-3

Nataliya [291]

It is 14 because 8= 6to-2 and 3to-3is 6 so both together is 14
hope this helps

4 0

4 years ago

The graph of this function is shifted 7 units right and shifted 5 units up.

mojhsa [17]

<h2><u>Graphing</u></h2>

<h3>The graph of this function is shifted 7 units right and shifted 5 units up.</h3>

True
False

<u>Answer:</u>

<u>False</u>

<u>Explanation:</u>

Why false? As I noticed, in the equation f(x) = -2/3(x - 7)² - 5, the vertex is (7, -5). The value of a, which is -2/3, is negative. So the graph opens downwards. The graph shifts 7 units to the right, which is correct, but graphing 5 units up is wrong. Why? 5 is negative, so it should be shifted 5 units down.

Wxndy~~

6 0

2 years ago