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3 years ago

Blueberries are on sale for $2.80 per pint. The regular price is $3.50 per pint. What is the percent of decrease?

Mathematics

1 answer:

maks197457 [2]3 years ago

3 0

The answer is 7% because the sale amount was .70 cents.

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What is the y-intercept of the quadratic function fx) (x- 6)(x-2)?

Elza [17]

Option 1
To find the y-intercept of a quadratic that is in factor formed follow the steps below:

First take the factor form and put it into standard quadratic form
Standard quadratic form:
$ax^2 + bx + c$

To put the the factor form of a qudratic into standard form, we use the foil method

(x-6)(x-2) = $x^2 - 8x +12$

Now to find the y-intercept, input 0 where the x is located:

$f(x) = x^2 - 8x +12$
$f(0) = 0^2 - 8(0) +12$
$f(0) = 12$
y-intercept = (0,12)

Why did I use 0? Remember the y-intercept is where the line crosses the y axis so this means the x value of the y intercept is always = 0. Also, not, to find the y-intercept, you could of just multiplied the 6 and 2 in the factored form to get the 12 and since you know that the x is always 0 at the y-intercept, you know that the y-intercept is at (0,12)

Option 2
Input 0 for x in f(x) = (x-6)(x-2)
f(x) = (x-6)(x-2)
f(0) = (0 - 6)(0 - 2)
f(0) = (6)(2) = 12
x = 0
f(0) = y = 12
y-intercept = (0,12)

7 0

4 years ago

Of 0 number 2.) Four more than the square root five. What is the number? is

yan [13]

Well the square root of 5 is 2.3607 and if you add four to that you get 6.3607. is this what you are asking?

3 0

3 years ago

Find the domains of the following expressions: <img src="https://tex.z-dn.net/?f=%5Csqrt%7B3-2x%7D" id="TexFormula1" title="

myrzilka [38]

Step-by-step explanation:

conditional :

3-2x ≥ 0

-2x ≥-3

x ≤ 3/2

1-x ≥ 0

-x≥ -1

x ≤ 1

so, the domain is:

{ x | x € the Real numbers, x ≤ 1}

8 0

3 years ago

Find the coordinates of the point (a, b).

Leviafan [203]

Answer:

a = $\frac{1}{\sqrt{2} }$ and b = $\frac{\sqrt{2} }{2}$

Step-by-step explanation:

As we know, the radius of the unit circle is 1 unit (it is the hypotenuse in the right triangle, the blue line)

We use trigonometric formulas to find out a and b

Sin(45) = opposite side / hypotenuse

<=> Sin(45) = b / 1

<=> b= Sin(45)*1 = $\frac{\sqrt{2} }{2}$

Cos(45) = adjacent side / hypotenuse

<=> Cos(45) = a / 1

<=> a = Cos(45)*1 = $\frac{1}{\sqrt{2} }$

So: a = $\frac{1}{\sqrt{2} }$ and b = $\frac{\sqrt{2} }{2}$

5 0

3 years ago

Tan(x)=2

nydimaria [60]

Tan(x)=2
Or for x=45 tan(x)=1
then for tan(x)=2 ; x must be superior to 45
Then the answer is d. 63.4 degrees

8 0

3 years ago