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Crazy boy [7]
3 years ago
11

Find the standard form of the quadratic equation: f(x)=(2x-1)(x+4)

Mathematics
1 answer:
katrin [286]3 years ago
3 0

Answer:

f(x) =  2x ^{2}  + 7x  -  4

Step-by-step explanation:

\because \: f(x) = (2x - 1)(x + 4) \\  \therefore \:f(x) =  2x(x + 4)  - 1(x + 4) \\ \therefore \:f(x) =  2x ^{2}  + 8x -   x  -  4 \\ \therefore \:f(x) =  2x ^{2}  + 7x  -  4 \\

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et mA = 40°. If B is a complement of A, and C is a supplement of B, find these measures. mB = ° mC = °
Free_Kalibri [48]

Alright, lets get started.

We have given angle A = 40°

We are also given angle B is complement of A.

Complementary angles are two angles whose sum is 90, it means

angle B = 90- A

angle B = 90 - 40

angle B = 50° Answer

Now given, angle C is supplement of angle B.

Supplementary angles are two angles whose sum is 180°.

Means angle C = 180 - B

angle C = 180 - 50

angle C = 130° : Answer

Means angle B = 50° and angle C = 130°

Hope it will help :)

5 0
3 years ago
What is the answer to this question?
AfilCa [17]
The answer should be B.
4 0
3 years ago
Help pls i need it "can u find the area
Orlov [11]

ANSWER:

EXPLANATION:

. :>

5 0
3 years ago
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What is 10 time 100000000000
katrin2010 [14]
1,000,000,000,000 is the answer
7 0
3 years ago
45 units and is centered at
mariarad [96]

The correct question is:

A circle has a radius of 45 units and is centered at (-2.4, -4.8).

What is the equation of this circle?

Answer:

Equation of the circle is;

(x + 2.4)² + (y + 4.8)² = 2304

Step-by-step explanation:

The standard equation of a circle is;

(x - a)² + (y - b)²  =  r²

where;

(a,b) is the center of the circle and r is the radius of the circle

Now, from the question, the circle is centered at (-2.4, -4.8) and the radius is 45

Thus, plugging those values into the standard form of equation of a circle, we have;

(x - (-2.4))²  +  (y - (-4.8))²  = 48²

This gives;

(x + 2.4)² + (y + 4.8)² = 2304

3 0
3 years ago
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