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tatyana61 [14]
2 years ago
10

3. Which of the following are the roots of the quadratic function below?

Mathematics
2 answers:
Stels [109]2 years ago
8 0
Answer I don’t know sorry
sergejj [24]2 years ago
4 0

Answer:

x = ± 12

Step-by-step explanation:

Given

f(x) = x² - 144

To find the roots set f(x) = 0, that is

x² - 144 = 0 ( add 144 to both sides )

x² = 144 ( take the square root of both sides )

x = ± \sqrt{144} = ± 12

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The market price of a house is directly proportional to the total area of the house in square feet. If the price of a 1,500 squa
IrinaK [193]

Answer:

The price of a 2,000 square foot home is \$400,000

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

Let

x -----> the total area of the house in square feet

y -----> the price of the house

we have

The point (1,500,300,000)

Find the constant of proportionality k

k=y/x

substitute

k=300,000/1,500=200

The direct equation is equal to

y=200x

so

For x=2,000\ ft^{2}

Find the value of y

substitute the value of x in the equation

y=200(2,000)

y=\$400,000

5 0
3 years ago
When measuring weight 6 small dogs are approximately equal to 9 large cats.
Zolol [24]

Answer:

See below

Step-by-step explanation:

Equation 1:

Step 1:

6 : 9 = x : 54      Ratio

Step 2:

9x = 324     Multiply

Step 3:

36 small dogs       Divide

Equation 2:

Step 1:

6 : 9 = x : 12       Ratio

Step 2:

9x = 72     Multiply

Step 3:

8 small dogs   Divide

First Answer:

36 small dogs

Second Answer:

8 small dogs

Hope This Helps :)

7 0
3 years ago
Jonathon's Yo-Yo has a string that is three and a half feet long. If Jonathon cuts six inches off of the string, how many feet w
earnstyle [38]
1 ft= 12 inches
1/2 ft= 6 inches

=3 1/2 feet - 6 inches
substitute # of inches in for 1/2 foot
=3 ft 6 inches - 6 inches
=3 feet

ANSWER: 3 feet

Hope this helps! :)
7 0
3 years ago
The price of a particular stock is represented by the linear equation y=-0.91x+103.47
Mama L [17]

To find the price of the stock after 12 weeks, you would have to plug in 12 to x

That would make your equation: y = -0.91(12) + 103.47

Then, you solve:

-0.91(12) would be -10.12

Your equation will now look like this:

y = - 10.12 + 103.47

Then you add -10.12 to 103.47

-10.12 + 103.47 = 92.55

y = 92.55

After 12 weeks, the price of the stocks would be $92.55

4 0
3 years ago
Read 2 more answers
What makes 2.4=6x true?
Murrr4er [49]
2.4=6x so isolated the variable, 2.4/6=0.4 so x=0.4
4 0
3 years ago
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