3 years ago

Find axis of symmetry f(x)=2(x-5)(x+9)

Mathematics

1 answer:

Effectus [21]3 years ago

7 0

Answer:

x = -2

Step-by-step explanation:

f(x) = 2( x^2 +9x -5x - 45)

f(x) = 2(x^2 + 4x - 45)

f(x) = 2x^2 +8x -90

axis of symmetry formula: x = -b / 2a

x = -(8) / 2(2)

x = -8 / 4

x = -2

*you can also graph the equation on a graphing calculator and find the middle of the parabola

You might be interested in

What type of association is shown in this scatter plot?

weeeeeb [17]

D strong and positive

7 0

3 years ago

Read 2 more answers

Benjamin drove a distance of 301.5 miles in

slava [35]

Answer: 67 miles per hour

Step-by-step explanation: $v = \frac{s}{t}$ where v is velocity, s is space and t is time;

$\frac{301.5 miles}{4.5 h}$ = 67

6 0

3 years ago

I need to know of an expression, that also uses an exponent that is equivalent to 5^-3

strojnjashka [21]

Answer:

1/5^3

$\frac{1}{5^{3} }$

Step-by-step explanation:

I'm not sure how to explain this, but if there is a negative exponent, then it can be written like this, as the denominator of a fraction.

5 0

3 years ago

F = 1.8 C + 32<br> (a) Work out the value of F when C = -8

dybincka [34]

Answer:

17.6°

Step-by-step explanation:

1.8x-8=-14.4

-14.4 + 32= 17.6°C

5 0

3 years ago

Can someone help me?

nasty-shy [4]

The scale factor is x2 or 100. 2 times 2 is 4 and n

5 0

3 years ago