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zalisa [80]
3 years ago
15

How do you do solve 13 a and b?

Mathematics
2 answers:
tiny-mole [99]3 years ago
7 0

Answer:

Step-by-step explanation:

Let A=ax²+bx+c

x=1,A=a+b+c or 7=a+b+c   ...(1)

x=2,A=4a+2b+c or 12=4a+2b+c   ...(2)

x=3,A=9a+3b+c or 15=9a+3b+c   ...(3)

subtract (1) from (2) & (3)

3a+b=5   ...(4)

8=8a+2b

or 4a+b=4   ...(5)

subtract (4) from (5)

a=-1

from (4)

-3+b=5

b=5+3=8

b=8

from (1)

-1+8+c=7

c=0

so A=-x²+8x

thus  table shows it is quadratic.

b.

A=-x²+8x=-(x²-8x+16-16)

or A=-(x-4)²+16

vertex is (4,16)

german3 years ago
6 0
For a you have to find the formula. for ex. 1+x=7 so you solve for x.
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Is y=y+8 even, odd, or neither
SIZIF [17.4K]

The expression y = y + 8 does neither represent an odd number nor an even number.

<h3>Does represent a given equation an even or odd number or neither?</h3>

In this problem we must check if a given algebraic equation represents an even number or an odd number or neither by using algebraic means. Even numbers are integers, whose last digit is 0, 2, 4, 6 or 8, whereas odd numbers are integers, whose last digit is 1, 3, 5, 7 or 9. Now we proceed to  check the expression:

y = y + 8                     Given

y + (- y) = 8                 Compatibility with addition / Existence of additive inverse / Modulative property

0 = 8                           Existence of additive inverse / Modulative property / Result

The expression y = y + 8 does neither represent an odd number nor an even number.

To learn more on even numbers: brainly.com/question/2289438

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3 0
1 year ago
On a road trip, Sara’s brother drove 47.5% of the trip, and Sara drove 80% of the remainder. If Sara drove for 4 hours and 12 mi
masha68 [24]
Let's put it all into minutes, and then solve. 4 * 60 + 12 = 252 minutes.
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4 0
3 years ago
What is the remainder when the polynomial f(x)=3x^3-4x^2+2x+8 is divided by (x-5)
allsm [11]

Answer:

remainder = 290

Step-by-step explanation:

\frac{3x^3-4x^2+2x+8}{x-5}

= 3x² + 11x + 57 + \frac{290}{x-5}

quotient = 3x² + 11x + 57 and remainder = 290


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3 years ago
Write the equation of the line in slope-intercept form using y=mx+b​
AysviL [449]
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2 years ago
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If a stock has a required return of "r", its next dividend is expected to be "DIV1", and its dividends are expected to grow at a
Kryger [21]

Answer:

The correct formula is P_0=\dfrac{DI V_1}{(r-g)}

Step-by-step explanation:

\text{Current share price}=\frac{\text{Estimated dividend for next month}}{\text{Required rate of return - constant growth rate}}

Here,

Required rate = r,

Growth rate = g,

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Current share price = P_0

By substituting the values in the above formula,

P_0=\dfrac{DI V_1}{(r-g)}

Hence, the correct formula of current share is,

P_0=\dfrac{DI V_1}{(r-g)}

5 0
3 years ago
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