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2 years ago

F(x)=-2(x-3)(x+5) convert quadratic functions to standard form

Mathematics

1 answer:

jasenka [17]2 years ago

4 0

Answer:

The answer is: f(x) = -2x^2 - 4x + 30

Step-by-step explanation:

Given:

f(x)=-2(x-3)(x+5)

Solve (x-3)(x+5) first, then multiply by -2:

f(x) = -2[(x - 3)(x + 5)]

f(x) = -2[x^2 -3x + 5x - 15]

f(x) = -2[x^2 + 2x - 15]

f(x) = -2x^2 - 4x + 30

Hope this Helps!! Have an Awesome Day!! (-:

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Use the given information to find the value of x. Then, find the measure of angle ADC.

skad [1K]

Answer:

60degrees

Step-by-step explanation

To get the angle x, you must first know that the sum of angle at a point is 360degrees. Hence;

x + <ADB + <CDB = 360

x +150 + 150 = 360

x+ 300 = 360

x = 360 - 300

x = 60

Hence the value of x is 60degrees

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2 years ago

A square has a side that is (x-3) units long. If the area of the square is 126.5625 sq units, what is the value of x?

Kitty [74]

Answer:

14.25 units

Step-by-step explanation:

Area of a square= $l*b= (x-3)(x-3)=x^{2}-3x-3x+9=x^{2}-6x+9$

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$x^{2}-6x-117.5625$

Solving the equation using quadratic equation then as attached

x=14.25 units

To prove

x-3=14.25-3= 11.25 units

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4 0

2 years ago

I NEED HELP LIKE ASAP, IF UR CORRECT I'LL MARK U BRAINLIEST.

Reil [10]

Answer:

Step-by-step explanation:

The initial value is the beginning output value, or the y-value when x = 0. Therefore, since y is at 7 when x is at 0, the answer is 7.

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2 years ago

Lincoln Middle School has a total of $200 to spend on notebooks and tablets for the school board meeting. Notebooks cost $7 each

kicyunya [14]

Answer:

The answer is the option C

The graph in the attached figure

Step-by-step explanation:

Let

x------> the number of notebooks

y-----> the number of tablets

we know that

The inequality that represent the situation is equal to

$7x+5y\leq 200$

Using a graphing tool

see the attached figure

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2 years ago

Read 2 more answers

The value of 82 is between which two integers?

hoa [83]

Hey there!

Let's look at the squares of all of our answer options. We will compare them to eighty two to see which it belongs in.

A. 36 and 49.

B. 49 and 64.

C. 64 and 81.

D. 81 and 100

As you can see, 82 is in between 81 and 100, so the answer is D. 9 and 10.

Also, the square root of 82 is about 9.05, and this fits our answer.

Have a wonderful day!

8 0

2 years ago

F(x)=-2(x-3)(x+5) convert quadratic functions to standard form​

F(x)=-2(x-3)(x+5) convert quadratic functions to standard form