AD is altitude of ΔABC and DE is altitude of ΔBEC. If m∠ADB=4x+15, what is m∠EDC?

the functions f and g are defined as follows f(x)=-5x+2 g(x)=3x^2-3x find f(g) and g(-2) simplify your answer as much as possibl

daser333 [38]

Answer:

f(g) = -15x^2 + 15x + 2.

g(-2) = 18.

Step-by-step explanation:

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

= -15x^2 + 15x + 2.

g(-2) = 3(-2)^2 - 3(-2)

= 12 + 6

= 18.

8 0

3 years ago

What is the value of b2 - 4ac for the following equation? 2x2 + 3x = -1

andreyandreev [35.5K]

The value of b^2-4ac is known as the discriminant of a quadratic function, and can tell you how many roots exist of this function depending on what it is equal to.

Start by moving the -1 to the other side, as we need this function to equal zero.

2x^2 + 3x + 1 = 0

This is now the standard form ax^2 + bx + c = 0. Plug each value that corresponds into the discriminant equation.

b^2-4ac
(3)^2 - 4(2)(1)
9 - 8
1

The value of the discriminant is 1, meaning that two real roots exist for the function described.

7 0

3 years ago

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(3 + 8i) + (7 -- 2i) - (6 - 5i) AO 4+1 B.O4 + 117 c. 16 +1 D.O4 + 1143

Lubov Fominskaja [6]

Answer: (3 + 8i) + (7 -- 2i) - (6 - 5i) = 4 + 15i

_____________________________________________

Simplify the expression.

4 + 15i

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3 0

3 years ago

The fastest a human has ever run is 27 miles per hours. How many miles per minute did the human run?

storchak [24]

They would have ran 0.45 miles per minute. Multiply this by 60 minutes(in which make an hour) and you will get 27 miles.

6 0

3 years ago

Read 2 more answers

Add.

Vikki [24]

Answer:

5/6

Step-by-step explanation:

9/30 + 16/30 = 25/30 = 5/6

3 0

3 years ago

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